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Senior Software Development Engineer L3 Jobs

7,101 active opportunities · Updated for October 2026

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Explore current senior software development engineer l3 jobs. Use filters to narrow by work mode, employment type, experience and date posted.

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Datadog
📍 New York• Full-time• From $195K/yr
1mo ago

Here at Datadog, we think about offensive security a little bit differently. We embrace automation and AI to run adversary simulations continuously across a massive cloud-native environment, and we expect our offensive engineers to build the tooling that makes that possible. We're looking for a Senior Security Engineer who can execute sophisticated red team operations, write the code that scales them, and take an AI-first approach to offensive security engineering. At Datadog, we place value in our office culture - the relationships and collaboration it builds, and the creativity it brings to the table. We operate as a hybrid workplace to ensure our Datadogs can create a work-life harmony that best fits them. What You'll Do: Plan and execute red team engagements end-to-end, simulating real-world threat actors across cloud infrastructure (AWS, GCP), Kubernetes, CI/CD pipelines, and corporate environments Build and maintain custom offensive tooling, automation frameworks, and engagement infrastructure, treating offensive operations as a software engineering problem Develop custom payloads and evasion capabilities tailored to Datadog's environment and modern defensive controls (EDR, SIEM, network monitoring) Improve the efficiency of offensive operations through thoughtful use of automation and AI, accelerating reconnaissance, vulnerability analysis, and reporting workflows Partner with the Detection & Response team on purple team exercises to validate detection logic, improve alert fidelity, and influence threat models Translate offensive findings into concrete improvements by working directly with defensive security and engineering teams to close gaps Who You Are: You have 5+ years of hands-on experience in offensive security (red teaming, penetration testing, or adversary simulation) with a track record of operating against mature, well-defended environments You write production-quality code (Python, Go, or similar), can build your own tools, and automate your w

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1mo ago

The Behavior AI team builds the AI-based anomaly detection behind Datadog's security products. Our models learn what normal looks like across the billions of logs, events, and telemetry records flowing through the platform every second, and they flag the behavior that does not fit, on every record, in real time, at a cost that makes sense at our scale. What we build does not ship to a single feature. The same models power detection across many of Datadog's security products at once, so the work has impact well beyond any one team. Large general-purpose models are too slow and too expensive to run in that path, so we take the opposite approach: small, custom models, designed for high-throughput stream processing and optimized to run cheaply on every record. We are hiring a Senior Applied Scientist to build these models from start to finish. You will contribute to designing the architecture, training at scale, and the optimization work that takes a model from training to running efficiently on production traffic. This optimization requires a deep understanding of the constraints imposed by both the software and the hardware, together with the applied mathematics to work within them: often it comes down to finding a mathematical reformulation that fits those constraints better, and that judgment can decide whether a model reaches production at all. The work involves a number of open questions. How do you obtain most of the quality of a large model from one that is far smaller and cheap enough to run on the full stream? Where is it worth trading exactness for speed, and how do you reason about the error you accept? How do you make a small model's outputs clear enough that the detection engineers and analysts who rely on it can trust what it reports? If these are the problems you want to work on, we would like to hear from you. At Datadog, we place value in our office culture: the relationships and collaboration it builds, and the creativity it bring

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Datadog
📍 California• Full-time• Remote• From $163K/yr
1mo ago

Senior Partner Program Manager - Strategic Initiatives Remote (US) or New York, New York, USA We're looking for an experienced Senior Partner Program Manager to design, launch, and scale strategic initiatives across Datadog's Channels & Alliances organization. In this role, you'll identify opportunities where targeted partner programs can accelerate business outcomes beyond Datadog's standard partner framework and lead those initiatives from concept to execution. This includes driving growth in a specific region, accelerating adoption of a new product, enabling a strategic collaboration with a partner, or creating a new referral or incentive motion. You'll be responsible for turning partner business opportunities into scalable programs. You'll work closely with partner leaders and cross-functional stakeholders to evaluate opportunities, align teams, execute, and continuously iterate based on performance. This is a highly visible role that requires strategic thinking, strong execution skills, and the ability to influence across a complex organization. This is an opportunity to join a high-growth cloud software company and help shape the future of Datadog's partner ecosystem. At Datadog, we place value in our office culture—the relationships and collaboration it builds and the creativity it brings to the table. We operate as a hybrid workplace to ensure our Datadogs can create a work-life harmony that best fits them. What You'll Do Identify opportunities to accelerate partner-driven growth through targeted programs and initiatives that complement Datadog's standard partner framework Design, launch, and scale custom partner programs that support strategic business priorities, including regional growth initiatives, new product adoption, partner incentives, referral motions, and strategic collaboration agreements Partner with stakeholders across Channels & Alliances, Sales, Deal Desk, Legal, Finance, Operations, Marketing, Product, and Enablement teams to bring p

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D
Datadog
📍 New York• Full-time• From $89K/yr
1mo ago

We’re looking for someone to join the Datadog Procurement team and help expand the Strategic Sourcing group. Make an impact by being a trusted analyst in several buying categories and continue to prove the value that Strategic Sourcing brings to the organization. At Datadog, we place value in our office culture - the relationships and collaboration it builds and the creativity it brings to the table. We operate as a hybrid workplace to ensure our Datadogs can create a work-life harmony that best fits them. What You’ll Do: Leverage AI tools (e.g., Claude, ChatGPT) to enhance market research, accelerate data analysis, and improve efficiency in sourcing workflows Identify opportunities to incorporate automation and AI into procurement processes to drive scalability and smarter decision-making Support and execute sourcing strategies directed by sourcing managers with a specific focus in G&A categories (People Team, Finance, Legal, Real Estate) Develop strong relationships with stakeholders and assist teams to independently evaluate their best practices and adopt a value-driven mindset when purchasing on behalf of the organization Lead and execute Sourcing events (RFx) Negotiate pricing and other business terms with vendors on net-new purchases and renewals Manage the renewals list for designated categories and ensure accuracy of information and proactive communication Analyze spend data and identify potential cost savings opportunities Create pricing models based on vendor proposals to quantify various buying scenarios Build license forecast models and utilization analyses for enterprise software renewals to help uncover usage and savings opportunities Collaboratively align with adjacent functions like FP&A on utilization and forecast models Operate effectively in ambiguous or evolving problem spaces, helping bring structure, clarity, and forward momentum to loosely defined sourcing initiatives Monitor market trends that impact spend categories and

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D
1mo ago

As a Platform Security Engineer you will partner with different stakeholders across the organization to secure our infrastructure and application components of the Datadog platform. As part of the Platform Security organization we secure the building blocks of Datadog’s applications and infrastructure. We do this by building solutions solving systemic risks making the secure path easier and the insecure path harder. At Datadog, we place value in our office culture - the relationships that it builds, the creativity it brings to the table, and the collaboration of being together. We operate as a hybrid workplace to ensure our employees can create a work-life harmony that best fits them. What You’ll Do: Solve our most challenging cloud infrastructure security & application security problems starting with our core building blocks and golden paths. Enable our engineers to build and ship secure solutions quickly. Build and extend Datadog’s Platform Security solutions. Leverage and influence the direction of Datadog’s products to secure our infrastructure, and provide internal feedback that enables our teams to improve the products for ourselves and our customers. Who You Are: You have a BS/MS/PhD in a Computer Science, Engineering or related scientific field or equivalent professional experience. You don’t want to just provide security recommendations, you want to help implement solutions to solve systemic issues. Passionate about advocating for and implementing solutions to complex security problems, at-scale, in a large multi-cloud self-managed Kubernetes environment. Proven experience in securing enterprise SaaS applications including securing the underlying authentication flows, authorization patterns, and input validation at API boundaries. Demonstrated experience in securing the deployment & management mechanisms for software and infrastructure changes. Familiarity with common security frameworks such as OWASP, MITRE ATT&CK, PAST

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Mongodb
📍 Austin• Full-time• From $1.3M/yr
1mo ago

We're looking for a high-energy, detail-oriented, and hands-on individual to join the Revenue Team as a Senior Revenue Manager. This role will be based out of our Austin, Palo Alto or NYC office and will primarily be responsible for determining appropriate accounting treatment for new product offerings, analyzing and reviewing complex revenue transactions, continually refining our revenue recognition policies, providing direction on technical revenue accounting issues and articulating accounting impact to our business partners during product rollouts. In addition, this role will participate in month-end and quarter-end close activities and be responsible for leading and mentoring a small team remotely. To be successful, this individual must have the ability to adapt quickly, make decisions autonomously, operate effectively in a rapidly scaling, dynamic environment and align well with MongoDB’s core values. This is a great opportunity to join and grow with a strong accounting team at a high growth, enterprise software company! Team Description The Revenue team is an extremely visible, high-performing team, ultimately responsible for accurate financial reporting of revenue. The team is responsible for managing the monthly close, contract negotiation, and determining appropriate accounting treatment for our product offerings. Additionally, this team is responsible for designing and maintaining controls over-reporting of revenue and assisting in quarterly forecasting activities for revenue and billings. This role will report directly to the Director of Revenue. Candidate Profile Bachelor's degree in Accounting (CA/CPA preferred) with at least 9+ years of experience in a similar role at public, high-growth SaaS or technology company Prior experience with revenue close operations and reconciliation process including working with sales data, customer contracts and product offerings Deep expertise in ASC 606 Experience in hiring, managing, and mentoring hi

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1mo ago

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. Auth0 provides an unparalleled authentication experience for hundreds of millions of users worldwide. Our commitment to reliability is a key foundation of our product and our dedication to exceeding customer availability expectations is a core engineering focus. As a Senior Site Reliability Engineer, you'll join our SRE team based in Europe to ensure our production systems are not only operational but also resilient, scalable, and ready for exponential growth. This isn't just about keeping the lights on; it's about directly contributing to the platform's core resiliency and robustness. You'll be a hands-on builder, crafting solutions that make our system more reliable by design. What you’ll do: Design and build custom software in Go to enhance the platform's reliability, resiliency, and redundancy. Partner with engineering teams to embed reliability principles, improving the availability, performance, and observability of our services. Use your deep understanding of infrastructure and observability principles to identify opportunities for improvement within the product and implement solutions. Contribute to our follow-the-sun on-call rotation, providing rapid, effective response to critical incidents and using your expertise to troubleshoot, mitigate or accurately escalate production issues. Because our team is globally distributed, your on-call shifts will only occur during your standard local working hours. Develop and refine our SRE tooling and proc

sqlawsazure
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O
1mo ago

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. At Okta, we’re building the future of secure, enterprise-grade AI Agents . We’re looking for a Principal Engineer to join our global AI Engineering team. In this role, you will be instrumental in designing and building the intelligent, user-facing experiences and the end-to-end AI solutions that power them. This is a senior individual contributor role for a hands-on engineer who can set technical direction, mentor others, and partner closely with our cross-geo counterparts as part of one global team. What you'll do : Drive the architecture and design of AI solutions, leading cross-functional initiatives across Product, Design, and Data Science. Design, build, and refine the core backend services that power our AI solutions, including LLM orchestration, RAG pipelines, and generative AI features. Build high-performance Agentic Experiences (AX) for web and mobile, engineered for streaming responses and low latency. Champion observability and operational excellence to ensure our AI services meet enterprise-grade standards for reliability and performance. Develop robust backend services to power our AI solutions, including LLM orchestration, RAG pipelines, and generative AI features Enable the successful delivery of key AI projects through technical leadership and hands-on execution. Mentor engineers, raising the bar on technical craftsmanship and solution quality across the full stack. Collaborate with cross-geo peers to ensure globally aligned designs, shared

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Okta
📍 Toronto• Full-time• From C$160K/yr
1mo ago

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. Get to know the team The Developer Platform team at Auth0 (an Okta company) owns the surfaces developers use to build with Auth0 - APIs, SDKs, CLIs, and the tooling that shapes how developers experience identity. Software is increasingly built by developers working alongside AI agents, and that shift raises the bar on every interface we ship: APIs have to be consumable by agents, tools have to be discoverable, and our platform has to hold up when an agent - not just a person, is the one calling it. We're looking for an engineer who already builds with those skills. We move fast, we own problems end-to-end, and we care deeply about the developer experience we put in front of people. The opportunity We're hiring a Staff Software Engineer to build the platform surfaces that developers and AI agents use to configure, extend, and interact with Auth0. You'll work at the intersection of API platform design, developer tooling, and emerging standards like MCP (Model Context Protocol). You'll take on ambiguous, high-leverage problems alongside a group of strong senior and staff engineers, and you'll have real influence over how our platform is built for a world where agents are first-class consumers. What you'll be doing Design and build developer-facing platform surfaces - APIs, MCP tools, CLI integrations, that hold up whether the caller is a developer or an agent Own technical direction for key platform surfaces that make Auth0 consumable by agents Drive cross-cut

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Figma
📍 Ca New York• Full-time• From $1.5M/yr
1mo ago

Figma is growing our team of passionate creatives and builders on a mission to make design accessible to all. Figma’s platform helps teams bring ideas to life—whether you're brainstorming, creating a prototype, translating designs into code, or iterating with AI. From idea to product, Figma empowers teams to streamline workflows, move faster, and work together in real time from anywhere in the world. If you're excited to shape the future of design and collaboration, join us! The Technical Accounting and SEC Reporting team is responsible for delivering timely and accurate financial reporting, accounting for complex accounting transactions across a variety of accounting topics in accordance with US GAAP, maintaining accounting policies in key accounting areas, all while partnering with teams across the company. As a member of the team, you'll play a vital role in designing and maintaining scalable procedures, policies and internal controls to ensure compliance with US GAAP and other laws/regulations. The ideal candidate will be a proactive, highly analytical and technical individual who can work independently and prioritize effectively across multiple deliverables. This is a full time role that can be held from one of our US hubs or remotely in the United States. What you'll do at Figma: Support preparation of quarterly (10-Q) and annual (10-K) SEC filings, including financial statements, footnotes, MD&A sections, and XBRL tagging Research and draft technical accounting position memos for complex transactions, including equity compensation (ASC 718), business combinations (ASC 805), capitalized software (ASC 350), and leases (ASC 842) Prepare and review monthly equity accounting journal entries (RSUs, PSUs, options) and maintain equity roll forward schedules Contribute to the monthly and quarterly close process, including balance sheet reconciliations and flux analyses Partner cross-functionally with Legal, FP&A, Tax, Stock Administration, and Investor Relatio

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Figma
📍 Ca New York• Full-time• From $1.4M/yr
1mo ago

Figma is growing our team of passionate creatives and builders on a mission to make design accessible to all. Figma’s platform helps teams bring ideas to life—whether you're brainstorming, creating a prototype, translating designs into code, or iterating with AI. From idea to product, Figma empowers teams to streamline workflows, move faster, and work together in real time from anywhere in the world. If you're excited to shape the future of design and collaboration, join us! The Corporate Accounting team is responsible for delivering timely and accurate financial reports, maintaining accounting policies, ensuring compliance across the company, and building best-in-class month-end processes - all while partnering with teams across the company. As a Senior Accountant, you'll own key areas of our monthly and quarterly close and take a lead role in designing and maintaining scalable procedures, policies, and internal controls to ensure compliance with US GAAP. We're an AI-forward team: we expect to continually re-think how we close, reconcile, and report using AI and automation rather than simply scaling manual effort. The ideal candidate is highly analytical, works independently, partners well across functions, and consistently meets deadlines while managing shifting priorities. We are currently hiring for two roles in the Corporate Accounting Team: Senior Accountant - General & Administrative Expense Accounting Own G&A cross-functional partnership, cash, corporate card, travel & expense, payroll & benefits accounting, intercompany and consolidations, with flux analysis and technical reporting for assigned areas. Scope may evolve as the team grows. Senior Accountant - Sales & Marketing Expense Accounting Own S&M partnership across functions, ASC 842 lease accounting, capitalized software, prepaids, fixed assets, intangibles & goodwill, and OPEX allocations, including flux review and reporting for your assigned scope. Scope may evolve as the

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Figma
📍 Ca New York• Full-time• From $82.5K/yr
1mo ago

Figma is growing our team of passionate creatives and builders on a mission to make design accessible to all. Figma’s platform helps teams bring ideas to life—whether you're brainstorming, creating a prototype, translating designs into code, or iterating with AI. From idea to product, Figma empowers teams to streamline workflows, move faster, and work together in real time from anywhere in the world. If you're excited to shape the future of design and collaboration, join us! We are looking for an Account Executive, SMB who will play a critical role generating new business and fielding inbound prospects in their territory. You will be responsible for targeting, building and nurturing positive relationships with key decision-makers and assisting them through their Figma evaluation and buying process of all products. This is an opportunity to accelerate your career, learn from leading sellers in the industry and build an incredible network of cross functional partners at Figma. This is a full time role that will be held from our NYC or SF Hub (in-person 2 days/week) What you'll do at Figma: Create and manage a pipeline of SMB accounts from inbound and outbound activity to consistently meet or exceed quarterly and annual sales targets Apply effective discovery and value-selling techniques to build and strengthen relationships with key decision-makers in both new and existing customers (500< FTEs) Align with key decision makers to identify where Figma’s roadmap and innovations can solve business challenges Conduct thorough analysis to tier and prioritize accounts in large volumes Expertly position Figma and engage cross-functional partners where necessary to drive deals forward Leverage opportunities to advance relationships through in-person meetings and networking opportunities We'd love to hear from you if you have: Experience closing sales for a software or SaaS business in an outbound function Consistent performance meeting pipeline generation targets for net new

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Instacart
📍 United States• Full-time• Remote• From $265K/yr
1mo ago

We're transforming the grocery industry At Instacart, we invite the world to share love through food because we believe everyone should have access to the food they love and more time to enjoy it together. Where others see a simple need for grocery delivery, we see exciting complexity and endless opportunity to serve the varied needs of our community. We work to deliver an essential service that customers rely on to get their groceries and household goods, while also offering safe and flexible earnings opportunities to Instacart Personal Shoppers. Instacart has become a lifeline for millions of people, and we’re building the team to help push our shopping cart forward. If you’re ready to do the best work of your life, come join our table. Instacart is a Flex First team There’s no one-size fits all approach to how we do our best work. Our employees have the flexibility to choose where they do their best work—whether it’s from home, an office, or your favorite coffee shop—while staying connected and building community through regular in-person events. Learn more about our flexible approach to where we work. Overview Instacarts Data Infrastructure organization builds and operates the systems that power our company’s data ecosystem, including a modern open data lakehouse on Apache Iceberg, a multi-engine compute platform for stream and analytical workloads, and self-serve tooling that helps Product, Data Science, ML, Ads, Finance, and engineering teams move fast with data. We’re looking for a Staff Software Engineer, Data Infrastructure to join our Data Governance and Foundations Team. In this role, you’ll serve as a senior technical leader owning the architecture and delivery of our open lakehouse foundation, governance and access patterns, and multi-engine compute strategy—balancing today’s reliability with the next three to five years of scale, maturity, and cost efficiency. You’ll collaborate closely with engineering leadership and stakeholders across Data Science,

REMOTEpythonsqlaws
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Instacart
📍 United States• Full-time• Remote• From $317K/yr
1mo ago

We're transforming the grocery industry At Instacart, we invite the world to share love through food because we believe everyone should have access to the food they love and more time to enjoy it together. Where others see a simple need for grocery delivery, we see exciting complexity and endless opportunity to serve the varied needs of our community. We work to deliver an essential service that customers rely on to get their groceries and household goods, while also offering safe and flexible earnings opportunities to Instacart Personal Shoppers. Instacart has become a lifeline for millions of people, and we’re building the team to help push our shopping cart forward. If you’re ready to do the best work of your life, come join our table. Instacart is a Flex First team There’s no one-size fits all approach to how we do our best work. Our employees have the flexibility to choose where they do their best work—whether it’s from home, an office, or your favorite coffee shop—while staying connected and building community through regular in-person events. Learn more about our flexible approach to where we work. Overview Instacart's Enterprise Solutions team partners with North America's largest grocery and retail chains to power their digital commerce through StorefrontPro, FulfillmentPro, CarrotAds, and adjacent software products. We're seeking a Senior Director, Enterprise Delivery and Growth to serve as the leader for this software portfolio — accountable for the full retailer experience from first implementation through ongoing growth and renewal. In this highly visible, impact-driven role, you will lead three Director-led organizations — Retailer Delivery (implementations), Enterprise Architecture & Engineering (solutions architecture, technical account management, and forward-deployed engineering), and Retailer Success (post-live growth and expansion) — and own the outcomes that matter: time-to-live, implementation quality and CSAT, adoption velocity, net revenu

REMOTEreactgitai
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Instacart
📍 BC, Canada• Full-time• Remote• From C$264K/yr
1mo ago

We're transforming the grocery industry At Instacart, we invite the world to share love through food because we believe everyone should have access to the food they love and more time to enjoy it together. Where others see a simple need for grocery delivery, we see exciting complexity and endless opportunity to serve the varied needs of our community. We work to deliver an essential service that customers rely on to get their groceries and household goods, while also offering safe and flexible earnings opportunities to Instacart Personal Shoppers. Instacart has become a lifeline for millions of people, and we’re building the team to help push our shopping cart forward. If you’re ready to do the best work of your life, come join our table. Instacart is a Flex First team There’s no one-size fits all approach to how we do our best work. Our employees have the flexibility to choose where they do their best work—whether it’s from home, an office, or your favorite coffee shop—while staying connected and building community through regular in-person events. Learn more about our flexible approach to where we work. Overview Instacart's Enterprise Solutions team partners with North America's largest grocery and retail chains to power their digital commerce through StorefrontPro, FulfillmentPro, CarrotAds, and adjacent software products. We're seeking a Senior Director, Enterprise Delivery and Growth to serve as the leader for this software portfolio — accountable for the full retailer experience from first implementation through ongoing growth and renewal. In this highly visible, impact-driven role, you will lead three Director-led organizations — Retailer Delivery (implementations), Enterprise Architecture & Engineering (solutions architecture, technical account management, and forward-deployed engineering), and Retailer Success (post-live growth and expansion) — and own the outcomes that matter: time-to-live, implementation quality and CSAT, adoption velocity, net revenu

REMOTEreactgitai
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