Backend Api Engineer Jobs

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: Bitstamp Exchange Platform Bitstamp made history in 2011 as the world’s first regulated crypto exchange. As a key part of the Robinhood family, the Exchange Platform team owns the full service lifecycle. We are the architects of a modern, high-velocity ecosystem that enables our global expansion, ensuring the world’s longest-running exchange remains unshakeable. The Role As a Senior Backend Engineer integrated into the Exchange Platform team, you will be a key driver of our modernization strategy. You will be an essential part of building the new generation infrastructure for low-latency services in the cloud, adopting cutting-edge technologies to drive our high-velocity ecosystem. This role is based in our London office(s), with in-person attendance expected at least 3 days per week. At Robinhood, we believe in the power of in-person work to accelerate progress, spark innovation, and strengthen community. Our office experience is intentional, energizing, and designed to fully support high-performing teams. Requires participation in an on-call rotation to support business needs. What You’ll Do Build Next-Gen Infrastructure: Architect and implement high-availability, low-latency cloud infrastructure that ensures performance and portability across our ecosystem. Modernize and Scale: Lead the transition of our services to modern, containerized environments, optimizing deployment and scaling workflows. Robinhood Ecosystem Integration: Manage and execute high-priority integration projects that align Bitstamp's backend with Robinhood's global infrastructure. Evolve the Stack: Identify and implement back

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 Robinhood’s Credit Card & Banking Product Engineering team conceptualizes, designs and builds our entire customer-facing product: from mobile application to underlying backend systems. Team members are trusted with full ownership over our innovative features and drive them from design to launch. We are looking for a full stack engineer with mobile experience, who is passionate about creating unparalleled user-facing products as we scale our 5 star standalone Credit Card & Banking application to the next level. Join us - you will have exceptional peers, autonomy and ownership over product features in a dynamic and sophisticated environment, and an opportunity to deliver immediate impact to millions of potential customers. What you’ll do Build and launch major new features that power Robinhood’s flagship credit card and Banking product. Ship new code to production on Day 1 Collaborate with a team of exceptional full stack engineers who challenge and inspire you to reach beyond your potential. Absorb your next two years' worth of experience in your first 6 months as you hit the ground running with impactful products and a top team Design systems that will support millions of users while enabling seamless integrations with world-class financial partners. What you bring At least 3 years of professional development experience building customer facing applications Proficiency with React / React Native Experience with backend development. We’re more interested in what you’ve built rather than what you used for it. Our stack includes Scala & Typescript; but the right person can learn these on t

At Lyft, our purpose is to serve and connect. We aim to achieve this by cultivating a work environment where all team members belong and have the opportunity to thrive. The Safety and Customer Care (SCC) team at Lyft manages over 1.7 million monthly human and AI interactions and serves as Lyft's primary direct touchpoint with riders and drivers. We handle critical infrastructure that powers both human associates and AI agents to make riders and drivers feel safe and comfortable while riding or driving with Lyft, transforming every support interaction into a moment of genuine connection. Agentic AI is at the center of how we scale that mission. We fine-tune and align open-source models, build AI-powered support agents, and develop end-to-end AI agents for safety case management, systems that reason over complex, high-stakes cases and drive them to resolution. SCC brings together ML, data, backend, and product engineers alongside data scientists and operations partners to transform these systems. As a Machine Learning Engineer on the SCC team, you will fine-tune and align models and build AI Agents that power how riders and drivers get help. Your work spans the full loop: post-training open-source models for our domain, composing them into multi-step agents, and building the evaluation that proves they are safe to ship in a customer-facing, safety-critical setting. Post-train and adapt open-source LLMs for SCC use cases using SFT, LoRA, and preference-tuning methods (RLHF, RLAIF, RLVR). Design and build AI-powered support agents and end-to-end agents for safety case management using LangGraph or equivalent agentic frameworks. Own the evaluation data flywheel, offline and online, that defines what "good" looks like and build benchmarks for the team to hill-climb. Turn interaction feedback into training data and learning signals, closing the data flywheel that continuously improves the models. Responsibilities: Conduct literature review and build post-training fra

At Lyft, our purpose is to serve and connect. We aim to achieve this by cultivating a work environment where all team members belong and have the opportunity to thrive. The Luxury team builds rich and creative features that set the standard for the ride-sharing industry. We're looking for a motivated Senior Engineering Manager to lead the team building app experiences, UIs, and infrastructure for Black, Black SUV, and other upmarket modes where quality is uncompromising. As a Senior Engineering Manager, you'll set the technical direction for the team, making tradeoffs between technical investments and product work, and communicating strategy transparently to your team and to leadership. You'll act as a critical technical leader across backend, frontend, iOS, and Android, taking holistic ownership of complex systems, defining strategic roadmaps, and driving cross-functional alignment and engineering excellence to improve the luxury experience. Ownership is a key quality for this team. You should be driven to track projects to successful completion and beyond, taking initiative to work with other teams and functions to ensure your team's work reaches users and drives impact. You'll also help shape product direction by developing a deep understanding of the customer. You'll lead a group of talented engineers, helping the team deliver business impact while staying open to change through constant experimentation. You'll collaborate with engineering, product, data science, design, and operations on programs that empower the team to iterate quickly, delighting our passengers and drivers. If you enjoy collaborating with technical and nontechnical partners on a product with real-world impact, this is the role for you. Responsibilities: Lead a team of talented backend, frontend, and mobile engineers and engineering managers who like to ship code and tackle hard engineering problems Mentor and guide the professional and technical development of your team members. Help d

At Lyft, our purpose is to serve and connect. We aim to achieve this by cultivating a work environment where all team members belong and have the opportunity to thrive. Lyft is looking for software engineers from a scope of disciplines. We are growing our team with people who want to build, improve and incorporate technologies that make the lives of our community more enriched. As an engineer at Lyft, you'll collaborate with teams like product, data science, analytics, and operations on code that empower us to iterate quickly, while focusing on delighting our passengers and drivers. The Applied AI team is looking for a Backend Engineer to join the AI Entries team. You will build the foundational infrastructure that connects Lyft to emerging AI ecosystems and devices and architect the APIs and orchestration layers that allow third-party agents and multimodal interfaces to interact with Lyft. By building these robust integration, you will help make Lyft available where our riders are. Responsibilities: Establish engineering best practices and patterns; help uplift the team's craft and drive a culture of engineering excellence Drive high-impact projects and innovate new solutions to deliver the best user experience Produce and drive scalable system design for large, complex features — from idea through execution and launch Mentor engineers on the team, providing technical guidance and supporting their growth Write well-crafted, well-tested, readable, maintainable code Participate in code reviews to ensure code quality and share knowledge across the team Participate in the team's on-call rotation; identify, triage, debug, and resolve issues across our applications and platforms Have the ability to explain the various trade offs made in decisions Manage project priorities, deadlines, and deliverables. Experience: BS/MS or equivalent in Computer Engineering, Computer Science, or related field or equivalent practical experience. 5+ years of software engineering/production

At Lyft, our purpose is to serve and connect. We aim to achieve this by cultivating a work environment where all team members belong and have the opportunity to thrive. Core Services powers the passenger and driver state machines from request and accept through drop-off and payment completion. The team enables new ride variations like autonomous vehicles, taxis, scheduled, business concierge, health and more. The “Core Services” are a suite of distributed Python and Golang systems central to Lyft’s backend. As a software engineer on the team, you will work on integrating new rider and driver products and features onto the state machine and enhancing the performance and reliability of ride state transitions. If you are excited about solving back-end distributed systems problems and owning a mission-critical part of Lyft’s operations, this team is for you. As a Software Engineer at Lyft, you will collaborate with other engineers and cross-functional teams, such as product, data science, and analytics, to lead and execute large projects—from concept to efficient execution. We are looking for motivated engineers who are passionate about solving challenging technical problems and excited to work in a fast-paced, innovative, and cross-functional environment. In this role, you will tackle some of the most interesting and impactful problems in ridesharing. Key traits for success include being passionate about Lyft’s business and product, a quick learner, a collaborative mindset, and an eagerness to drive initiatives both within and across teams. You'll be joining a small, close-knit team with engaged and collaborative co-workers. Responsibilities: Design, develop, deploy, monitor, operate and maintain existing or new elements of the Fulfillment tech stack Write well-crafted, well-tested, readable, maintainable code Have a good grasp and ability to explain the various tradeoffs made in decisions Participate in code reviews to ensure code quality and distribute knowledg

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: Providing world-class customer service for our community of guests and hosts is a critical mission at Airbnb. The Ambassador Routing & Channels (ARC) team sits within Airbnb Community Support and is responsible for powering intelligent, differentiated service experiences, ensuring every support request, across any channel, is addressed by the right expert at the right time. Our work directly drives faster resolutions, higher quality interactions, and exceptional customer satisfaction at scale. The Difference You Will Make: As a Staff GenAI Backend Engineer on the ARC team, you will drive meaningful impact across our core routing and differentiated service programs: Lead engineering delivery on strategic programs that enable intelligent agent matching, personalized support experiences for high-value customers, and next-generation routing and communication channel capabilities. Own and evolve core routing infrastructure, including decision engines, workflow orchestration, and routing rule management. Ensuring high availability, correctness, and scalability across millions of daily support interactions. Drive consolidation of fragmented routing logic spread across multiple platforms and channels into a centralized, auditable, and maintainable system. Collaborate cross-functionally with Product, Operations, Data Science, and partner engineering teams to align on priorities and deliver outcomes that improve the customer support experience. Contribute to technical quality through design reviews, code reviews, and pragmatic architectural decision-making. Play a critical role in buildin

Discord has a highly engaged community of millions of daily active users who use the platform for many different reasons, but there’s one thing that nearly everyone does: play video games. Discord plays a uniquely important role in the future of gaming, and we are focused on making it easier and more fun for people to hang out before, during, and after playing games. We’re looking for a Staff Software Engineer to join our Safety Processing team. This team plays a crucial role in ensuring trust and safety across Discord, processing signals from user reports and automated systems to identify and remove harmful or illegal content from our platform. You’ll lead backend projects, provide architectural guidance, and help build scalable systems that protect our users. Your work will directly impact the safety of our platform and help make Discord a place where everyone can belong. To learn more about Discord Engineering, take a look at our engineering blog. What You'll Be Doing: Lead, design, and build scalable backend systems for processing safety-related signals, primarily using Python Guide and mentor the team through architectural and system design challenges, ensuring long-term scalability as Discord continues to grow Collaborate with cross-functional teams to build tools for content moderation and related compliance efforts. This includes in house solutions and vendors Implement and enhance ML/AI models and automation to improve efficiency in content moderation and decision-making processes Build solutions with an adversarial mindset, anticipating and addressing safety challenges such as malicious behavior and illegal content on the platform Drive workstreams and provide leadership to the team, mobilizing others to accomplish projects and deliver impactful outcomes What We Look For: Python Expertise : Extensive experience developing and maintaining backend systems using Python Architectural Leadership : Strong system design and architecture skills with the ability to

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: Airbnb is a mission-driven company dedicated to helping create a world where anyone can belong anywhere. It takes a unified team committed to our core values to achieve this goal. Airbnb's various functions embody the company's innovative spirit and our fast-moving team is committed to leading as a 21st century company. The Difference You Will Make: The Service Tools team’s mission is to enable Airbnb backend developers to develop, test, and maintain their code quickly and reliably. This team is responsible for the standard development lifecycle for service owners—everything from AI Integration for service development, to how integration tests work, to building services for deployment. This represents Airbnb’s largest cohort of developers, you will ultimately be responsible for their productivity. A Typical Day: As an engineer on Service Tools, you will work on technologies that help shape an industry-leading end to end developer experience for backend developers. In this role you will be: Building our next-gen build system using the latest technologies (e.g., Bazel). Working on integrations between the build system and CI/CD tooling (e.g., merge queues, code coverage, integration testing). Improving the editor (e.g., IntelliJ) experience for all backend developers. Helping to shape the technical strategy that directly moves our core metrics (Developer Experience, Developer Velocity, Debuggability, Resilience and Reliability) while reducing cost. Partnering with engineering leaders across all Airbnb teams for adoption of the new capabilities. Your customers will be all enginee

Discord has a highly engaged community of millions of daily active users who use the platform for many different reasons, but there’s one thing that nearly everyone does: play video games. Discord plays a uniquely important role in the future of gaming, and we are focused on making it easier and more fun for people to hang out before, during, and after playing games. Discord only works at our scale if people feel safe showing up — and building the systems that make that possible is exactly what our Safety engineering org does. We classify content, route reports, make and audit enforcement decisions, and build the tools our operations partners use to handle everything automation doesn't. The work is a mix of deep backend infrastructure, AI-driven automation, and tight collaboration with the people who do nuanced review. As Discord grows into new surfaces like commerce and ads, the platform we build matters more. We're hiring a Director of Engineering to lead Safety Infrastructure Engineering at Discord. The org is roughly 20 engineers across two teams with two EM direct reports. You'll report to the senior Director of Safety and work closely with T&S Operations, Safety ML, Safety Product, Legal, Policy, Security, and Core Tech. What you'll do Lead and grow two engineering teams covering our safety backend: the decision platform, classification systems, content understanding, intake and routing pipelines, and observability Drive the automation roadmap with Safety ML. Decide where AI belongs in the loop, where humans still win, and hold the line on quality, latency, and cost Own the queue routing and internal tooling our ops teams and vendor partners rely on, and partner with T&S Operations on golden sets, QA, appeals, and evals that turn operational signal into better systems Consolidate fragmented systems onto infra and set the bar for engineering quality: on-call, incident response, technical review, and ownership Hire, coach, and grow senior leaders Who you

Who we are About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies—from the world's largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone's reach while doing the most important work of your career. About the team The Stripe mission is to build the economic infrastructure for the internet. Risk and Compliance Engineering builds products to lower financial and regulatory risk at scale for Stripe, while retaining a best-in-class user experience. We build user-facing products and backend platforms to ensure our users are compliant with regulatory and financial partner requirements. We protect the Stripe brand while also protecting the company from financial losses that can put the Stripe business at risk. The Risk TPM team is crucial to driving programs to address these challenges. What you'll do As a Technical Program Manager in the Risk and Compliance space, you'll play a key role across engineering, product, and strategy to drive programs that span across the Risk organization and Stripe. You'll be responsible for the successful definition, cross-functional strategy, planning, and execution of large-scale technical programs that help to solve complex problems and empower Stripe and our users. Responsibilities • Execute on technical programs that require deep systems and engineering knowledge. • Partner with Engineering Managers, Product Managers, and other cross-functional partners to define, scope, and drive large programs to conclusion. • Develop, implement, and iterate on program management techniques, frameworks, and key performance indicators to achieve goals with well-defined success criteria. • Make substantial improvements to how the teams you

Who we are About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies—from the world's largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone's reach while doing the most important work of your career. About the team The Issuing team owns the Stripe card issuing product end to end from the APIs and backend services that power spend cards, debit cards, and charge cards, to the dashboard and embedded components that businesses use to manage their card programs. We build the infrastructure and interfaces that let platforms and businesses instantly create, distribute, and control payment cards at scale, and we're responsible for the full cardholder lifecycle across commercial and consumer issuing. We're at an inflection point. Issuing is expanding into new geographies, new card categories (stablecoin, healthcare, consumer credit), and deeper partnerships with major platforms. This is a high-impact, high-visibility role at the intersection of financial infrastructure, developer-facing APIs, and end-user product experience, and it requires someone who can lead technically across a complex, fast-moving domain. What you'll do Define and drive the technical strategy for Issuing, including multi-year architecture decisions across backend services, APIs, and user-facing surfaces. Own end-to-end technical solutions for critical systems, authorization flows, spending controls, cardholder management, and card program configuration, ensuring they are reliable, scalable, and operationally sound. Identify and lead infrastructure investments that unlock new issuing models, including geographic expansion, new card program types, and platform-level extensibility

Who we are About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies—from the world’s largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone’s reach while doing the most important work of your career. About the team Stripe’s mission is to build the economic infrastructure for the internet. Risk and Compliance Engineering builds products to lower Stripe’s financial and regulatory risk at scale, while retaining a best in class user experience. We build user-facing products, and backend platforms to ensure Stripe’s users are compliant with regulatory and financial partner requirements. We protect Stripe’s brand while also protecting the company from financial losses that can put Stripe’s business at risk. The Risk TPM team is crucial to driving programs to address these challenges. What you’ll do As a Technical Program Manager in the Risk and Compliance space, you will play a key role across engineering, product, and strategy to drive programs that span across the Risk organization and Stripe. You will be responsible for the successful definition, cross-functional strategy, planning and execution of large-scale technical programs that help to solve complex problems and empower Stripe and our users. Responsibilities Execute on technical programs that require deep systems and engineering knowledge. Partner with Engineering Managers, Product Managers and other cross functional partners to define, scope, and drive large programs to conclusion. Develop, implement, and iterate on program management techniques, frameworks, and KPIs to achieve goals with well defined success criteria. Make substantial improvements to how the teams you work with communi

Who we are About Stripe Stripe, LLC. is a financial infrastructure platform for businesses. Millions of companies - from the world’s largest enterprises to the most ambitious startups - use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone's reach while doing the most important work of your career. What you’ll do Responsibilities Design, develop, maintain, and support application programming interfaces (APIs), backend services, and distributed systems using Ruby, Java, Go and Scala. Build, test, deploy, and maintain software infrastructure to support large-scale production systems. Design and develop software systems using analytical techniques and mathematical models to evaluate system performance, predict outcomes, and assess design tradeoffs. Develop and execute software testing, validation, debugging, and documentation procedures to ensure system reliability and performance. Diagnose and resolve production issues across multiple services and layers of the technology stack. Analyze user needs and software requirements to determine technical feasibility, design approaches, and implementation timelines within cost and resource constraints. Collaborate with cross-functional engineering teams to design and implement new features for large-scale systems. Design and build systems to securely store, manage, and modify production data and services. Improve engineering standards, development tools, and software development processes to enhance system quality and efficiency. Who you are Minimum requirements Must have a Bachelor's degree or foreign equivalent in Computer Science, Software Engineering, or a related field, plus 2 years of software development experience. Must also have 2 years of experi

Who we are About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies—from the world’s largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone’s reach while doing the most important work of your career. About the team Secure Devices is responsible for ensuring that every client endpoint at Stripe adheres to our rigorous security standards. Our services play a crucial role in detecting and preventing data loss, restricting software execution to only approved software, and providing attestation capabilities to securely manage device identities. We operate both on-device and backend services across multiple platform types. Our users-first approach ensures that we’re empowering Stripes to be as productive as possible while protecting user data. What you’ll do As a software engineer on Secure Devices, you will work at the intersection of software development, security, and client platform engineering. You will work with teams across Security, Infrastructure and Corporate Engineering to drive strategic projects to better secure Stripe endpoints, build infrastructure for supporting new platforms, and operate services critical to securing over 10,000 Stripe devices. Responsibilities Contribute to the secure design and implementation of Stripe’s mobile expansion initiative Act as the subject matter expert on iOS security by advising partner teams on iOS security best practices and secure-by-design architectures Design, build and maintain Stripe’s endpoint security software. This includes developing telemetry and prevention capabilities via macOS system extensions that run on all Stripe macOS devices Collaborate closely with partner teams to define and measure the