Senior Lead Python Jobs

About Us: Comfrt is one of the fastest-growing direct-to-consumer brands, dedicated to blending mental wellness, inclusivity, and elevated comfort into every piece we create. Our mission goes beyond clothing — we strive to build a community where everyone feels supported and seen. About the Job: The Senior Manager of Logistics owns the strategic and operational management of Comfrt's outbound carrier network and parcel optimization initiatives. This role leads national and regional parcel carriers, LTL, and final-mile carrier relationships through data-driven negotiations and multi-carrier strategy. By applying advanced analytics, carrier profitability modeling, zone-skipping strategies, and AI-powered optimization, this role reduces single-carrier risk, drives cost savings, and scales logistics operations efficiently. This role enables Comfrt's D2C expansion across new markets and channels while maintaining service excellence, sustainability commitments, and unit economics. Outbound logistics is the final mile of Comfrt's customer promise and directly impacts both customer satisfaction and margins. This role translates strategic revenue and margin targets into practical carrier network design, rate contracts, and operational execution. By managing multi-carrier contingency, optimizing parcel economics through dimensional weight reduction, implementing sustainable packaging innovations, and maintaining service level commitments, this role builds a scalable operating model that supports rapid expansion without service or cost surprises. This role is critical to Comfrt's competitive positioning in D2C and multi-channel fulfillment markets. Responsibilities: Outbound Carrier Network Strategy & Multi-Carrier Optimization [40%] Own relationships with national parcel carriers (UPS, FedEx, DHL), regional carriers, USPS, LTL providers, and emerging logistics partners; maintain quarterly business reviews aligned to carrier profitability models and performance score

About us Graphcore is one of the world’s leading innovators in Artificial Intelligence compute. It is developing hardware, software and systems infrastructure that will unlock the next generation of AI breakthroughs and power the widespread adoption of AI solutions across every industry. As part of the SoftBank Group, Graphcore is a member of an elite family of companies responsible for some of the world’s most transformative technologies. Together, they share a bold vision: to enable Artificial Super Intelligence and ensure its benefits are accessible to everyone. Graphcore’s teams are drawn from diverse backgrounds and bring a broad range of skills and perspectives. A melting pot of AI research specialists, silicon designers, software engineers and systems architects, Graphcore enjoys a culture of continuous learning and constant innovation. Job Summary We are seeking a Staff Hardware Engineer to provide advanced operational, diagnostic, and engineering support for Graphcore’s Arm-based hardware platforms across lab and data center environments. This role focuses on supporting hardware bring-up, validation, and troubleshooting of complex AI compute platforms, including server blades, racks, and rack-scale infrastructure. The successful candidate will collaborate closely with engineering, platform, and data center teams to ensure the reliability and performance of next-generation AI systems. The Team The Systems Engineering and Hardware Engineering teams are responsible for enabling the bring-up, validation, and operational reliability of Graphcore’s AI infrastructure platforms. The team works closely with server engineering, firmware teams, platform architects, and data center operations to support the development, testing, and deployment of next-generation AI compute systems. This collaborative environment enables rapid problem-solving and continuous improvement of Graphcore’s hardware platforms from early development through production deployment.

Join us in building the future of finance. Our mission is to democratize finance for all. An estimated $124 trillion of assets will be inherited by younger generations in the next two decades. The largest transfer of wealth in human history. If you’re ready to be at the epicenter of this historic cultural and financial shift, keep reading. About the team + role We are building an elite team, applying frontier technologies to the world's biggest financial problems. We're looking for bold thinkers. Sharp problem-solvers. Builders who are wired to make an impact. Robinhood isn't a place for complacency, it's where ambitious people do the best work of their careers. We're a high-performing, fast-moving team with ethics at the center of everything we do. Expectations are high, and so are the rewards. The Developer Infrastructure org is the engine behind Robinhood's entire engineering organization — a collection of tightly integrated teams whose collective mission is to make every engineer at Robinhood faster, more reliable, and exponentially more productive. The org spans four major teams: DevX (Developer Experience), TestX (Test Infrastructure), Backend Platform, and Mobile Platform. DevX owns Robinhood's monorepo and Bazel-based build infrastructure — the critical layer between a developer writing code and that code being ready to ship — along with the company's full CI/CD pipeline and remote build execution cluster. TestX owns the infrastructure behind Robinhood's entire test experience: the integration test environments, and personal development environments that serve as miniature simulations of the full Robinhood system, giving engineers a safe, isolated space to test their code end-to-end before it ever touches production. Backend Platform and Mobile Platform own the core language runtimes, libraries, IDEs, and developer toolchains across Python, Go, TypeScript, Swift, and Android. Together, these teams share a single north star: leveraging AI and agentic systems

About Energy CX: Energy CX is redefining the energy brokerage industry as the fastest-growing player in the US. By bringing cutting-edge technology, advanced analytics, and innovative solutions, we are disrupting a space that has operated in the dark for too long. Why Energy CX? Entrepreneurial and ambitious culture with a great team oriented environment Fastest growing energy broker in the country One of the fastest growing companies in Chicago Recognized by Fortune and Great Places to work US Named on Inc 5000’s list of America’s fastest growing companies Compensation Year 1 Expected Earnings → $115,000 to $200,000. The expected salary range above may vary based on qualifications and experience. Title: Senior Product Manager, Customer Platform About this Job We're looking for a Senior Product Manager to own our customer-facing energy purchasing and tracking platform during a critical high-growth phase. You'll define and drive the vision for turning that platform into an interactive, data-rich experience — think Bloomberg Terminal or Robinhood — that gives clients real-time visibility and control over their energy purchasing decisions. This is a flagship customer-facing bet, and you'll be the senior product voice shaping it end to end. What You'll Do Own the product roadmap and vision for the customer-facing platform, translating energy purchasing and tracking into an interactive, real-time interface Partner with Engineering, Design, and Quantitative Strategy to define data visualizations, live pricing displays, and interactive tools that make complex energy market data intuitive for clients Gather requirements directly from clients, Sales, and Customer Success to identify what drives engagement and decision-making on the platform Write detailed product requirements and specs, and work closely with engineering to ship features that measurably improve client engagement and retention Define and track success metrics (engagement, retention, feature a

About us Graphcore is one of the world’s leading innovators in Artificial Intelligence compute. It is developing hardware, software and systems infrastructure that will unlock the next generation of AI breakthroughs and power the widespread adoption of AI solutions across every industry. As part of the SoftBank Group, Graphcore is a member of an elite family of companies responsible for some of the world’s most transformative technologies. Together, they share a bold vision: to enable Artificial Super Intelligence and ensure its benefits are accessible to everyone. Responsibilities and Duties We are seeking a highly skilled System Tests & Diagnostics Engineer to develop, extend, and integrate specialized silicon validation and diagnostics tools for next-generation AI SoCs. Unlike traditional validation roles focused on executing test plans, this position is responsible for developing the diagnostic software and stress tools that expose hardware failures, characterize silicon behavior, and improve platform observability throughout bring-up and validation. You will work closely with Arm engineers to understand and extend existing diagnostics technologies while developing Graphcore-specific capabilities for future AI hardware. Role Summary You will work with existing Arm-developed diagnostics technologies and extend them to support Graphcore's next-generation AI silicon. You will be responsible for developing system-level diagnostics and stress tools that integrate with an existing framework to detect data integrity, computational correctness, performance, and reliability issues across CPUs, AI accelerators, memory, storage, PCIe, firmware, BMC, and other platform components. Examples include silent data corruption (SDC) tests, power transient stress tools, and platform diagnostics, with opportunities to develop new diagnostics as future hardware capabilities evolve. This role requires close collaboration with hardware architects, firmware enginee

SonicWall is a cybersecurity forerunner with more than 30 years of expertise and is recognized as a leading partner-first company, ensuring our partners and their customers are never alone in the fight against cybercrime. With the ability to build, scale and manage security across the cloud, hybrid and traditional environments in real-time, SonicWall provides relentless security against the most evasive cyberattacks across endless exposure points for increasingly remote, mobile and cloud-enabled users. With its own threat research center, SonicWall can quickly and economically provide purpose-built security solutions to enable any organization—enterprise, government agencies and SMBs—around the world. For more information, visit www.sonicwall.com or follow us on Twitter , LinkedIn , Facebook and Instagram . Position Summary We are hiring a Software Dev Engineer to design, build, test, and deploy AI-powered applications. You will work across the full application lifecycle — from architecture and implementation through automated testing, CI/CD deployment, and production monitoring — building features that put large language models and agentic tooling to work inside SonicWall's internal systems. This is a hands-on engineering role for someone with 6–8 years of professional software development experience who is comfortable owning services end to end: writing production-quality code, integrating LLM and agentic APIs, standing up reliable data and retrieval pipelines, and shipping through a disciplined test-and-release process. You will collaborate closely with senior engineers, product stakeholders, and platform teams to turn requirements into dependable, well-tested applications. Key Responsibilities Develop AI applications: Design and build features and services that use LLM and agentic capabilities — prompting, tool/function calling, retrieval-augmented generation (RAG

For more than 30 years, SonicWall has delivered a partner-first unified cybersecurity portfolio that helps SMBs, MSPs, and IT teams consolidate network security, endpoint security, security service edge (SSE), and threat response across hybrid environments. By bringing connected technology, real-time threat intelligence, automation, and expert services together, SonicWall helps organizations simplify security operations, achieve better security outcomes, and lower total cost of ownership. Backed by a global ecosystem of more than 17,000 partners, SonicWall delivers enterprise-grade protection built for SMB and mid-market realities. For more information, visit www.sonicwall.com or follow us on X, LinkedIn , Facebook , and Instagram . Position Summary We are hiring a Software Dev Engineer to design, build, test, and deploy AI-powered applications. You will work across the full application lifecycle — from architecture and implementation through automated testing, CI/CD deployment, and production monitoring — building features that put large language models and agentic tooling to work inside SonicWall's internal systems. This is a hands-on engineering role for someone with 6–8 years of professional software development experience who is comfortable owning services end to end: writing production-quality code, integrating LLM and agentic APIs, standing up reliable data and retrieval pipelines, and shipping through a disciplined test-and-release process. You will collaborate closely with senior engineers, product stakeholders, and platform teams to turn requirements into dependable, well-tested applications. Key Responsibilities Develop AI applications: Design and build features and services that use LLM and agentic capabilities — prompting, tool/function calling, retrieval-augmented generation (RAG), and orchestration — to solve real internal business problems. Write production code: Implement clean, mai

Here at Appian, our values of Intensity and Excellence define who we are. We set high standards and live up to them, ensuring that everything we do is done with care and quality. We approach every challenge with ambition and commitment, holding ourselves and each other accountable to achieve the best results. When you join Appian, you’ll be part of a passionate team dedicated to accomplishing hard things, together. Senior Advisory Solutions Consultant - GAM Location: McLean, Virginia, USA | Work Model: Onsite at Appian Headquarters About the Team The Solutions Consulting organization at Appian sits at the vital center of our global commercial engine, bridging the gap between sophisticated enterprise business needs and cutting-edge platform capabilities to secure the technical win. Our mission is to prove the undeniable value of Appian’s platform within the AI-Powered Process Automation market, driving customer acquisition and fueling corporate growth. Under our SC 2.0 operating model, our consultants don't just demo features—they tell compelling stories, co-create solutions with customers, and help shape strategy with technical credibility and business insight. The Opportunity As a Government Acquisition Management (GAM) Specialist Solutions Consultant, you will actively drive and manage the technology evaluation stage of the sales process for the GAM Suite. Working in conjunction with the solution sales team as the key technical adviser and product advocate. Using technical creativity and business acumen, you illustrate the value that Appian’s GAM Suite can provide. You will engage and articulate product positioning to both business and technical users in competitive scenarios. You will also rapidly identify all technical issues of assigned opportunities to assure complete customer satisfaction through all stages of the sales process. What You'll Do Partner with Solution Sales Executives to achieve defined sales goals Demonstrate how G

Who are we? FalconX is a pioneering team of operators, investors, and builders committed to revolutionizing institutional access to the crypto markets. Operating at the intersection of traditional finance and cutting-edge technology, FalconX addresses the industry's foremost challenges: Navigating the digital asset market can be complex and fragmented, with limited products and services that support trading strategies, structures, and liquidity found in conventional financial markets. As a comprehensive solution for all digital asset strategies from start to scale, FalconX operates as the connective tissue empowering clients with seamless navigation through the ever- evolving cryptocurrency landscape. The Role We’re looking for a Senior Trading Systems Developer with strong experience in low-latency Rust and/or Java to architect and build our electronic trading execution platform. This platform will be central to supporting complex electronic trading algos, such as automated market making on exchanges and quant trading strategies. You will work on the core components that sit on the hot path of our execution stack — including market-data ingestion, order management, risk checks, session control, and high-throughput venue connectivity. You’ll be designing and developing scalable, low-latency components that are resilient under heavy load and tightly integrated with our execution stack and internal trading infrastructure. What You’ll Do Build scalable services using Rust and Java, optimized for latency and throughput. Responsible for development of low latency services on Aeron, including OMS/EMS components, market-data pipelines, and venue gateway connectivity. Integrate with exchange APIs using FIX, REST, WebSocket, and venue-specific protocols. Model complex order lifecycles, state machines, and execution workflows into resilient, observable, fault-tolerant services. Design and maintain SBE message schemas and high-throughput message-bus communication o

At Kailera, we are bold, authentic and committed to our mission of developing therapies that give people the power to transform their lives and elevate their overall health. Rooted in an entrepreneurial spirit and a team-oriented culture, we are working together to advance Kailera’s mission to advance novel therapies for obesity and related conditions. We are passionate about creating an inclusive workplace that promotes collaboration, integrity, and excellence. As we expand, we seek the most talented individuals with diverse backgrounds, cultures, perspectives, and experiences to join our team. What You’ll Do: The Senior Scientist, Analytical Development and Quality Control will support analytical development and quality control activities performed by our external partners for cGMP manufacturing, quality release, and stability. The Senior Scientist will work directly with technical counterparts at vendor sites to implement the required product controls and ensure the integrity of data generated by our external partners. This role will also provide critical support for regulatory filings and ensure compliance with global regulatory standards. Required location: Waltham, MA (hub-based, onsite 3-4 days per week) Responsibilities: Participate in the assessment and selection of Contract Development and Manufacturing Organizations (CDMOs) Oversee analytical activities conducted by these CDMOs to ensure external partners fulfill technical needs and quality standards Perform detailed review and provide data integrity oversight of data generated at CDMOs Ensure appropriate methods are developed and implemented for drug substance and drug product based on identified critical quality attributes Provide oversight of phase-appropriate method validation activities in alignment with current regulatory requirements Oversee stability programs to support product retest, shelf-life, and expiration dating Contribute to the preparation of data summaries and report

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 We are seeking a Senior Product Manager to own the vision, strategy, and execution for Order Quality. This role sits at the intersection of shopper and customer experiences, working to improve item discovery and replacement workflows while ensuring customers can easily communicate their preferences. Fulfillment Order Quality is a critical driver of customer satisfaction and retailer trust at Instacart. You will define and deliver a roadmap that enables reliable fulfillment for our customers and retailers and efficient picking experiences for our shoppers. You will partner closely with a dedicated team of engineers, designers, and data scientists, collaborating across the organization to drive aligned priorities. About the Job This is an exciting opportunity to define the shopper and customers flows using cutting edge AI and LLM technologies. Own the

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 We are seeking a Senior Product Manager to own the vision, strategy, and execution for Order Quality. This role sits at the intersection of shopper and customer experiences, working to improve item discovery and replacement workflows while ensuring customers can easily communicate their preferences. Fulfillment Order Quality is a critical driver of customer satisfaction and retailer trust at Instacart. You will define and deliver a roadmap that enables reliable fulfillment for our customers and retailers and efficient picking experiences for our shoppers. You will partner closely with a dedicated team of engineers, designers, and data scientists, collaborating across the organization to drive aligned priorities. About the Job This is an exciting opportunity to define the shopper and customers flows using cutting edge AI and LLM technologies. Own the

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 About the Role This role sits at the center of one of our most important Enterprise product bets: giving retailers significantly more control over how they differentiate and extend their digital experiences. The PM will define how retailers move beyond standard configurations to create experiences that feel truly their own, using a combination of AI-assisted customization, extensibility, and integrations. This is a highly ambiguous problem space with limited precedent, significant latitude to set the vision, and regular visibility with senior executives. The right person will bring exceptional product judgment, very high throughput decision making, and strong technical acumen. They will be able to partner deeply with senior engineers, align a complex group of stakeholders around a long-term vision and challenge conventional approaches when necessary. The r

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 About the Role This role sits at the center of one of our most important Enterprise product bets: giving retailers significantly more control over how they differentiate and extend their digital experiences. The PM will define how retailers move beyond standard configurations to create experiences that feel truly their own, using a combination of AI-assisted customization, extensibility, and integrations. This is a highly ambiguous problem space with limited precedent, significant latitude to set the vision, and regular visibility with senior executives. The right person will bring exceptional product judgment, very high throughput decision making, and strong technical acumen. They will be able to partner deeply with senior engineers, align a complex group of stakeholders around a long-term vision and challenge conventional approaches when necessary. The r

Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 130 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com . The Reddit Consumer Engineering organization builds and scales the products that Redditors use directly to discover content, participate in communities, and connect with others. Sitting at the intersection of large-scale distributed systems and core user journeys, Product Backend Engineers in Consumer Engineering partner directly with Product Managers, Designers, Data Scientists, ML Engineers, and Frontend Engineers to build, experiment with, and scale features that power how hundreds of millions of users discover, join, navigate, and engage with Reddit. This centralized role hires across several high-impact consumer teams, including: Core Product & Feeds: Home Experience, Recommendations & Content Discovery, Content Contribution Community & Presence: Reddit Pro, Youth Experience & Teen Safety, Creator Tools Growth & Engagement: Authentication, Notifications, Social Sharing, SEO, Onboarding. Monetization & Conversion: Paid User Acquisition, Conversion Funnel Optimization Identity & Security: Account Management, Trust & Safety What You’ll Do Cross-Functional Product Architecture: Partner closely with Product Management, Product Design, Data Science, and Client Engineers (iOS/Android/Web) to translate business and user needs into reliable, low-latency technical solutions. End-to-End Delivery: Own the full software lifecycle for major product initiatives from technical design docs and API contracts to development, testing, rollout, and observability. Metrics & Experimentation-Led Enginee