Senior Backend Engineer With Cloud Experience Jobs

GitLab is the intelligent orchestration platform for DevSecOps. GitLab enables organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. More than 50 million registered users and more than 50% of the Fortune 100* trust GitLab to ship better, more secure software faster. The same principles built into our products are reflected in how our team works: we embrace AI as a core productivity multiplier, with all team members expected to incorporate AI into their daily workflows to drive efficiency, innovation, and impact. GitLab is where careers accelerate, innovation flourishes, and every voice is valued. Our high-performance culture is driven by our values and continuous knowledge exchange, enabling our team members to reach their full potential while collaborating with industry leaders to solve complex problems. Co-create the future with us as we build technology that transforms how the world develops software. * Fortune 500® is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune Media IP Limited are not affiliated with, and do not endorse products or services of GitLab. An overview of this role As a Senior or Staff Backend Engineer with the Database Excellence group , you'll build and evolve database automation and PostgreSQL as a service capabilities for GitLab. The level will be determined during the hiring process. You'll use Go to automate the full lifecycle of PostgreSQL across GitLab's infrastructure, making database operations safer, more consistent, and easier to scale for databases that sit behind high-throughput, always-on internet services. You'll work closely with partner teams to shape how GitLab provisions and manages PostgreSQL in a fully remote, highly collaborative environment.

About the Team OpenAI's research training infrastructure powers how our frontier models are trained and evaluated. The Simulation team sits at the intersection between the agentic harness that powers OpenAI's products and the research infrastructure where GPT-next is trained, ensuring that our model's training environment is as realistic as possible. This team owns the integration layer that connects our production harness capabilities into the training stack. The work is highly cross-functional and high leverage: researchers depend on it to run experiments and evaluations reliably as well as to develop the next generation of harness capabilities. Failures in this surface can materially affect training velocity and correctness. About the Role We're looking for a Principal Software Engineer to lead the architecture and evolution of the Simulation Platform. You'll own a critical interface between research and engineering, building the systems, APIs, and operational patterns that let researchers use agentic coding infrastructure safely and effectively in training environments. This role is ideal for a senior backend or infrastructure engineer with strong technical judgment, product sense for highly technical users, and the ability to drive execution across multiple teams. The highest-leverage work is building robust infrastructure that supports and accelerates research without compromising engineering quality. In this role, you will Design, build, and evolve the integration between the Codex harness that powers OpenAI's products and research training infrastructure used for training GPT-next Build a platform for our LLMs to train and be evaluated in simulated environments that mimic their deployment setting as closely as possible, on every axis: agentic harness, compute substrate, timing, tools, data sources, humans in the loop, and more Own major integration surfaces end-to-end, from architecture and API design through rollout, operations, and long-term maintenance Bu

Karya is building the data infrastructure for the next generation of AI. We work across languages and real-world contexts to create high-quality datasets and evaluations, while creating meaningful digital work for underserved communities. We’re looking for a Senior Backend Engineer to take ownership of important parts of our platform and help shape the next generation of Karya’s engineering infrastructure. This is a role for someone who enjoys being given a difficult problem and figuring out how to solve it. You’ll work closely with the Head of Engineering and have significant autonomy over the systems you own, from architecture and implementation through production and iteration. What You'll Do Much of the infrastructure we build has constraints that are uncommon in conventional software systems. Karya operates across multiple geographies, with different requirements, environments, and network conditions. Our systems need to work reliably even when connectivity is limited or intermittent, while still supporting a centralized platform that can scale across countries without becoming a collection of country-specific systems. You’ll work on problems such as: Building backend infrastructure that can operate reliably across very different environments and geographies. Designing systems that cannot always assume a reliable network, including resilient data transfer and eventual synchronization. Evolving our existing architecture as the platform grows, making the right trade-offs between simplicity, performance, reliability, and scale. Building infrastructure and developer tooling that increases the leverage of the engineering team. Solving problems across APIs, data systems, distributed systems, integrations, performance, security, and reliability. The interesting part is that there often isn't an established pattern to follow. You’ll need to understand the constraints, make good technical decisions, and build pragmatic solutions. What You'll own You’ll own m

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 Compliance Engineering team is responsible for preparing Reddit’s platforms for evolving regulatory requirements. We’re building products that establish the foundation of trust in the Reddit platform, while partnering closely with teams across the company to ensure our platforms and features meet the highest standards. Engineers on this team will thrive in dynamic, ambiguous problem spaces and work across multiple domains and technology stacks. What You’ll Do: Shape the future of Reddit by adapting our platforms to an evolving privacy, security, and regulatory landscape Partner with product, design, and engineering teams across the company to build trusted, compliant experiences for millions of users Join a highly visible team where you’ll influence both technical and product strategy, and help define an entirely new product space Own product areas and shape strategy end-to-end: from technical design and coding to testing, experimentation, analysis, and launch Lead high-impact, cross-functional initiatives that are critical to Reddit’s business and platform integrity Raise the bar for engineering by improving workflows, setting standards, and mentoring the next generation of engineers Qualifications for this role: 5+ years backend development experience with multiple parts of the backend stack, from databases to networking to efficient computing. We develop with Go, Python, Postgres, Redis, Thrift, GraphQL and deploy to Docker/k8s on AWS. Experience as a tech lead on projects and teams with 3+ backend engineer

Who We Are Verkada is transforming how organizations protect their people and places with an integrated, privacy-sensitive AI-powered platform that includes solutions for video security, access control, air quality sensors, alarms, intercoms, and visitor management. We’ve got serious momentum in the market: more than 30,000 customers (including 100+ of the Fortune 500), a $5.8B valuation , more than $1 billion in annualized bookings, and backing from CapitalG, Sequoia Capital, General Catalyst, Felicis Ventures, Next47 and more. Physical AI is one of the most consequential technology shifts of our time, and Verkada is at the center of it. You can look at all kinds of communities to see our platform’s impact in the world. It's the retailer that uses our agentic AI to deter theft before it happens. The warehouse that uses AI-powered alerts to make sure its team is protected on the floor with proper PPE. The school that’s alerted to a threat in real-time and triggers a lockdown in seconds, not minutes. We’re rapidly scaling this impact: today, more than 2 million Verkada devices are deployed across 170+ countries. About the Role We are looking for experienced back-end engineers to join the Verkada Core Command team. We are scaling out the Auth, Users, Roles and Audit capabilities of Verkada's core products to service the largest organizations in the world. What You'll Do Design scalable control planes and data primitives for all Verkada products Build scalable distributed systems capable of handling high traffic from hundreds of thousands of devices deployed around the world. Spin up new services in a microservices architecture What You Bring Degree in Computer Science, Computer Engineering or Software Engineering 4+ years of relevant industry experience Experience in building and scaling access systems to millions of users around the world Strong written and verbal communication skills Mastery of at least one of Python or Go Experience with relationa

About the Job: Software powers the world, and LaunchDarkly empowers teams to deliver and control it safely. As a Senior Backend Engineer on the Identity & Access Management team, you will own the systems every customer touches before they touch anything else: SAML and OAuth2 single sign-on, SCIM user and team provisioning, login and session management, multi-factor authentication, and the API key and token infrastructure that authenticates every request to our platform. When authentication is wrong, customers cannot get in at all — or the wrong person gets in. Security and availability here are commitments to our customers, not nice-to-haves. You and your team will make this stack operable and enterprise-ready. Technologies include Go, TypeScript, CockroachDB, Redis, AWS, and Terraform. Exact tool match matters far less than deep backend judgment and a track record of safely changing systems that are not allowed to be wrong. Responsibilities: Own LaunchDarkly’s authentication surface end to end — single sign-on, SCIM provisioning, login and session flows, multi-factor authentication, and API key and token authentication. Build the enterprise identity capabilities our largest customers require: additional identity-provider integrations, support for multiple IdPs per account, and MFA enforcement by default. Make the stack operable: SLOs, monitoring for certificate expiry and provisioning failures, actionable alerting, runbooks, and a sustainable on-call. Partner with Product Security on threat modeling, audit logging, and compliance requirements including SOC 2 and FedRAMP. Set the technical direction for identity at LaunchDarkly, and raise the bar for the engineers around you through design review and mentorship. Qualifications: 6+ years of professional software-engineering experience, with significant work on complex backend applications. Experience building or operating production authentication and identity systems. A track record on systems where correctness

About Us OG.com is a fast-growing, CFTC-regulated Prediction Market platform powered by cutting-edge technology. We’re building an engaging marketplace where users trade on real-world outcomes - from major sports and elections to cultural and financial events. With a sleek mobile-first app and a passionate community, we’re redefining how people interact with news, probabilities, and financial markets. OG.com runs on the rails of North American Derivatives Exchange, Inc. (NADEX), a CFTC-regulated exchange operating since 2004 and was acquired by Crypto.com in 2022. ABOUT THE ROLE We are seeking a highly skilled Mid-to-Senior Backend Engineer to spearhead the growth of our 24/7 high-throughput infrastructure, with a particular focus on expanding our core domains into the sports, prediction ecosystem. This role demands an engineer who thrives within a fast-paced, startup-minded ecosystem, possessing a deep domain understanding of sports platforms / prediction environments, and capable of keeping critical transactional networks running flawlessly around the clock. RESPONSIBILITIES Design, develop, and optimize robust, highly scalable backend services and distributed systems in Golang to power our 24/7 global trading and sports-domain applications. Develop backend services and operations, including proposing architectural decisions, participating in design reviews, coding, code review, and implementing features Act as the technical subject matter expert to increase and embed deep sports domain knowledge into our core backend, building features tailored to prediction markets, real-time sports data feeds, and interactive mechanics. Identify, diagnose, and resolve architectural bottlenecks within a large-scale, high-concurrency infrastructure Operational Support: Provide high-tier technical operational support to address complex, real-time client issues and maintain flawless systemic availability. REQUIREMEN

Who We Are Verkada is transforming how organizations protect their people and places with an integrated, privacy-sensitive AI-powered platform that includes solutions for video security, access control, air quality sensors, alarms, intercoms, and visitor management. We’ve got serious momentum in the market: more than 30,000 customers (including 100+ of the Fortune 500), a $5.8B valuation , more than $1 billion in annualized bookings, and backing from CapitalG, Sequoia Capital, General Catalyst, Felicis Ventures, Next47 and more. Physical AI is one of the most consequential technology shifts of our time, and Verkada is at the center of it. You can look at all kinds of communities to see our platform’s impact in the world. It's the retailer that uses our agentic AI to deter theft before it happens. The warehouse that uses AI-powered alerts to make sure its team is protected on the floor with proper PPE. The school that’s alerted to a threat in real-time and triggers a lockdown in seconds, not minutes. We’re rapidly scaling this impact: today, more than 2 million Verkada devices are deployed across 170+ countries. About the Role As a Senior Software Engineer on Verkada’s Growth Engineering team, you will build products and platforms that directly impact pipeline, revenue, and the effectiveness of our go-to-market teams. A growing focus of the team is applied AI: turning new model capabilities into reliable products that help Sales and Marketing teams access trusted information, make better decisions, and execute complex workflows. You will build across agent workflows, enterprise integrations, evaluation systems, and backend infrastructure, while also contributing to the broader systems that power lead management, attribution, and sales and marketing automation. This role is ideal for an engineer excited to apply advances in AI to real business problems. Success requires strong product and engineering judgment, a willingness to work directly with users, and

Our Global Structure Deliveroo is now part of DoorDash, bringing together teams with even greater reach, scale, and ambition. Depending on your role, you may collaborate with teammates, systems, and leaders across DoorDash and Wolt. Together, we’re unlocking new possibilities as one global team. Role overview We are looking for a Senior Backend Engineer to help build and evolve our new Common case-management system, which powers support-case handling across DoorDash, Wolt, and Deliveroo. You will own significant end-to-end initiatives across our backend services: case lifecycle, routing and assignment, queue management, case evidence and history, and migration from legacy systems. This is a hands-on role for someone who can turn ambiguous customer and operational problems into durable technical solutions, coordinate other engineers, and set the standard for reliability and craftsmanship on the team. What you’ll do Lead one or more project-level Case Management initiatives, on your own or by guiding a group of engineers, from discovery and design through rollout, measurement, and operational ownership. Design and build scalable backend services and APIs for case creation, routing, assignment, transfers, audit history, notes, attachments, and queue-management workflows. Help deliver feature parity with legacy platforms while safely migrating traffic across DoorDash, Wolt, and Deliveroo. Make and own most technical decisions within your scope. Write project-level design documents covering how sub-features interact, identify dependencies and risks, and break work into parallelizable delivery plans. Scope ambiguous customer and operational problems, weigh long-term against short-term trade-offs, and design durable solutions. Partner with Product, Operations, Support, Data, and other engineering teams to define the right problems. Shape the team roadmap through prototypes, data analysis, project proposals, and backlog prioritization. Run the coordination a project needs,

About Us OpenFX is on a mission to move money as freely as data, unrestricted by time zones, banking hours, or legacy systems. We are building the infrastructure that will power the next generation of cross-border payment systems for institutions. The team's execution has been exceptional, and we're scaling at a remarkable pace. Our stellar early team comes with experience in companies like J.P. Morgan, Goldman Sachs, FalconX, PayPal, Affirm, Polygon, Kraken, Nium & others. We're backed by Accel, Lightspeed, NfX and other top-tier investors. Role Overview We're hiring a backend-heavy Full Stack Engineer for our Payments team — the team that owns how money actually moves for our clients. Payments owns corridor expansion (EUR, MXN, COP, AED, and beyond), the operationalization of our EU licenses (safeguarding of customer funds, transaction monitoring), and the payments product across GUI and API. Our north star is payment volume moved reliably, with corridor success rate and on-time settlement as the control metrics. You will own the systems on that money path. This is where a client's payment gets initiated, routed to the right partner, tracked through cut-offs and settlement, and reconciled — and where a failure is not a bug ticket but stuck money. You will own the backend of these flows — partner integrations, payment lifecycle state machines, webhooks, retries, and idempotency — and be trusted with the correctness of what actually happens to the money. You will also work across the stack. The payments product ships on both API and GUI surfaces, and you'll build the dashboard views your backend powers — payment status, tracking, reporting — rather than waiting on someone else to unblock you. You don't need deep frontend expertise for this role, but you do need to be genuinely comfortable there. We're specifically looking for someone with a payments or fintech background. Think a payment gateway, PSP, neobank, or cross-border payments company (Razorpay, Juspay,

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 . This is a fully remote role. Reddit has a flexible first workforce. The Identity and Access Management team develops and maintains a set of mission critical, highly performant, and highly scalable systems that manage user identity, authentication, and authorization for all of our millions of daily users and backend services. Some of our present and future challenges include: Building systems around authentication, authorization and identity to meet the needs of Reddit’s engineering organization and millions of daily users. Design, build and ship backend services powering experiences for one of the most visited sites in the world. Work with product management, security, client engineering, and backend teams to define and implement Reddit’s IAM vision and roadmap. As a senior engineer on this team, you’ll be a technical coach and mentor. You’ll draw on your technical expertise to ensure these systems have high uptime and strong performance while working with others to build a roadmap to match the needs of an ever growing engineering organization. In your day-to-day, you will: Steer: Work with the team to select, scope, and drive high leverage projects that align with Reddit’s goals. Build: Execute on a strategy and create a more performant, more scalable, higher quality architecture around authentication, authorization and identity. Amplify: Mentor, coach, and collaborate with other technical contributors Collaborate: Work together with a variety of cross functional teams across Reddit Engineering. Evolve: Lea

About Wolt At Wolt, we create technology that brings joy, simplicity and earnings to the neighborhoods of the world. In 2014 we started with delivery of restaurant food. Now we’re building the delivery of (almost) everything and you’ll find us in over 500 cities in 30 countries around the world. In 2022 we joined forces with DoorDash and together we keep on dreaming big and expanding across the globe. Working at Wolt isn’t always easy, but it’s definitely exciting. Here you’ll learn more, build more, and ship more than in most other companies. You’ll be challenged a lot, but also have a lot of fun on the way. So, if you’re a self-starter with drive and entrepreneurial spirit, this could be the ride of your life. Who We Are Global Marts builds the technology behind DoorDash's own grocery and retail operations across DashMart, Wolt Market, and Deliveroo Hop. Our systems decide what products our stores stock, how much inventory to purchase, which vendors to source from, how warehouses execute orders, and what prices customers see. We build everything from forecasting and replenishment systems to vendor management, warehouse execution, labor scheduling, space optimization, and pricing. Our in-house forecasting platform has replaced third-party solutions and now powers production globally. This isn't a traditional CRUD backend environment. Much of our work involves designing new systems that solve complex operational problems at global scale. What You'll Do As a Senior Backend Engineer, you'll work primarily with Go or Kotlin and take end-to-end ownership of production systems and complex technical initiatives. You'll: Design, build, and operate backend systems that support inventory, purchasing, warehouse operations, pricing, and fulfillment. Own technical solutions from problem definition and design through implementation, deployment, monitoring, and production operation. Work on data-heavy systems where software engineering meets forecasting, optimization, and

Banking hasn't changed much in decades. We're changing that. One product at a time. Lunar is a Nordic challenger bank building the future of banking, with AI at the core. Our engineers, designers, and product people work on problems that actually matter. Making money simpler, smarter, and more rewarding for millions of people across the Nordics. Fully licensed and founded in 2015, with offices in Copenhagen, Aarhus and Stockholm. We move fast, we build with purpose, and we're just getting started. As our new Senior Backend Engineer you'll join one of our Money Core squads based in Aarhus , reporting to Girish Premchandran , Director of Technology - Core Banking, working to build out our domestic payments universe and power banking at Lunar. What will you do? Take ownership of critical banking domains, developing and maintaining the systems that keep our banking products running on a solid, reliable foundation Integrate with external partners to extend and strengthen what our platform can do Keep our systems highly available and resilient, while looking for new ways to make the customer experience better Explore how AI can enhance the banking experience for our customers, from first idea to production Share what you know and help the people around you grow, while staying open to learning from them too What are we looking for in you? 4+ years of professional experience as a backend engineer, with a solid background in distributed systems and event-driven architecture A collaborative team player who enjoys sharing knowledge and helping others succeed You communicate clearly and work well within a diverse, cross-functional team Experience with Golang is a big plus, though not a requirement — we'll help you get up to speed Financial or trading experience is a bonus, not a must What you get 4 days in the office. We're a team that builds together, thinks together, and moves together. Showing up is part of how we work. State of the art equipment. The newest computer, monito

About the Job: LaunchDarkly is seeking a Senior Backend Engineer to join our Experimentation team. The Experimentation team is building one of the company’s most strategic product areas: a platform that helps leading engineering organizations move beyond intuition and make product decisions with real statistical confidence. Sitting at the intersection of large-scale systems, data science, and user experience, the team is creating a best-in-class experimentation product that lets customers set up, manage, and analyze experiments with ease while still earning the trust of even the most rigorous data teams. From warehouse-native analysis to experimentation workflows built on top of LaunchDarkly’s massive feature management scale, this team is tackling ambitious technical problems with visible customer impact and a clear opportunity to define the future of modern software experimentation. As a Senior Backend Engineer, you will design and operate the services that power this product, contribute to technical direction, and help deliver new functionality to customers. You will work closely with product managers, designers, data scientists, and engineers across LaunchDarkly to solve complex, data-intensive problems with meaningful customer impact. Responsibilities: Design, build, and operate scalable backend services and APIs that power LaunchDarkly’s Experimentation product. Own backend components across their lifecycle, including technical discovery, design, implementation, testing, deployment, monitoring, incident response, and continuous improvement. Build and evolve systems supporting experiment setup, event data ingestion, metric computation, results processing, and results presentation. Contribute to architectural decisions and technical proposals, making thoughtful trade-offs around scalability, reliability, performance, cost, and maintainability. Partner with product managers, designers, data scientists, and adjacent engineering teams to translate customer needs an

About Wolt At Wolt, we create technology that brings joy, simplicity and earnings to the neighborhoods of the world. In 2014 we started with delivery of restaurant food. Now we’re building the delivery of (almost) everything and you’ll find us in over 500 cities in 30 countries around the world. In 2022 we joined forces with DoorDash and together we keep on dreaming big and expanding across the globe. Working at Wolt isn’t always easy, but it’s definitely exciting. Here you’ll learn more, build more, and ship more than in most other companies. You’ll be challenged a lot, but also have a lot of fun on the way. So, if you’re a self-starter with drive and entrepreneurial spirit, this could be the ride of your life. What you’ll be doing As part of Wolt’s Platform department (Core Group), you’ll help improve and automate operations for our storage access platform - our real time database abstraction layer solution designed with scale and resiliency in mind . The product you will build enforces best practices by design, abstracts database infrastructure, and supports Multi-Region architecture through data sharding and replication. You join a team of highly skilled engineers in designing, building and optimizing this platform and ensuring smooth developer onboarding, constant improvement and optimization. As an engineer on the Storage access platform team, you’ll work on platform features such as UI for developer teams, storage abstraction layer, database automation, client SDK and proxy, Change Data Capture pipelines, caching and ephemeral storage, Hot & Cold storage management and more. Our humble expectations You’ll be a great fit for this role if you have the following skills and experience: A strong developer-to-developer mindset, with a genuine enjoyment of building for internal customers and treating other engineers as your primary users. Adaptability and strong motivation for working with distributed systems. A data-driven approach to decision-making and