Top Senior Software Engineer Jobs

Build scalable distributed systems for Rula’s Marketplace Health Engine, improving provider utilization, marketplace efficiency, and patient access. Partner with Engineering, Product, Data, and Operations; lead technical strategy across teams; design backend services, APIs, and data-intensive systems; drive projects from discovery through post-launch support; solve complex marketplace problems; mentor engineers; and remain hands-on in software development.

Design, develop, test, and maintain Java backend services, APIs, microservices, and distributed systems supporting enterprise claims and payment solutions. Collaborate with product and business stakeholders, contribute to architecture, build CI/CD pipelines, operate containerized applications, and support production services through monitoring and troubleshooting. Apply clean code, TDD, automated testing, security, and Agile engineering practices while helping guide the platform’s technical direction.

Build enterprise platforms and tools supporting AI-enabled animation production. Partner with senior engineers, artists, technical directors, infrastructure, and security teams to evaluate algorithms, prototype workflows, develop APIs, manage generated assets, maintain production tracking tools, monitor hardware and software usage, and standardize secure workflows across shows.

Design, build, and operate low-latency, high-throughput ad delivery systems for bidding, ranking, auctions, and budget enforcement. Integrate ML signals, collaborate with product and data teams, improve observability and reliability, lead design discussions, and mentor junior engineers.

Design, build, and modernize full‑stack web applications and microservices for a real‑time event-driven data and visualization platform. Develop and optimize streaming data pipelines (Kafka, Flink, Spark), integrate observability, caching (Redis), and AI agents, and collaborate with hardware verification teams for scalable, low-latency solutions.

Own and develop Arena’s public web surfaces, including the blog, marketing pages, and leaderboard UI. Build with Next.js, React, TypeScript, Sanity CMS, and the company design system. Improve performance, accessibility, SEO, structured data, internationalization, and data visualization. Create CMS models and publishing tools that enable marketing teams to ship independently while collaborating closely with designers, marketers, and engineers.

Leads software development for mission-focused cyber and defense capabilities. Guides development teams, mentors engineers, conducts code reviews, integrates databases and data-transfer protocols, implements architectural and system improvements, and builds scalable, automated digital solutions. The role requires advanced programming experience, database integration skills, and the ability to obtain a TS/SCI clearance.

Build backend-focused full-stack systems and AI workflows, integrating language models into secure, scalable production services. Own projects from early concepts through delivery, scale systems as adoption grows, and improve architecture, observability, and code quality. The role requires independent execution, strong Python skills, and experience with APIs, distributed systems, or data-heavy backends. Healthcare technology experience and production generative AI experience are advantageous.

Own and develop backend and full-stack services, including architecture, deployment, production reliability, scaling, and infrastructure improvements. Translate customer needs into technical solutions, collaborate with product and design, mentor engineers, and improve engineering standards. The role requires independently delivering production software in Python, TypeScript, or Go within a fast-growing environment.

Lead technical direction for billing workflows across frontend and backend systems. Define shared architecture, APIs, components, and observability; oversee large-scale tables, bulk operations, claims workflows, and platform rebuilds. Apply AI to claim comparison and error analysis, while owning performance, reliability, architecture reviews, code quality, and mentoring across teams.

Own complete product features from discovery and design through backend implementation and release. Build and scale backend systems, contribute to architecture and delivery, use AI development tools, and make product decisions through customer conversations and user-experience judgment. The role requires independent execution, end-to-end systems ownership, and hands-on development of AI or LLM-powered features in an onsite startup environment.

Build and maintain Cloudflare’s globally distributed Quicksilver key-value store using Go and C. Develop features, improve CPU and memory performance, enhance monitoring and operational tooling, and debug complex, hard-to-reproduce issues across the software stack. Responsibilities include code reviews, testing, deployments, rollbacks, operations, alerting, and on-call support for a system operating across tens of thousands of servers and hundreds of data centers.

Develop, prototype, integrate, and test Python-based software for missile warning/tracking missions. Contribute to containerization, testing, deployment, and provide technical guidance to team members while supporting DoD programs and maintaining high software engineering standards.

Develop and maintain LAMP and Perl software applications, taking ownership of existing implementations and designing new solutions. Build REST or SOAP APIs, create unit tests, implement test automation, and work with UNIX command-line tools. The role may involve high-throughput, highly available transaction-processing systems, along with Java, Spring, Hibernate, SVN, and object-oriented design. Candidates should work independently, communicate effectively, and have at least eight years of overall software development experience.

Lead design, development, and testing of payload flight software in Rust for attitude/pointing, command handling, telemetry, and data storage. Define architecture and coding conventions, implement FDIR, build automated test infrastructure (simulation/HIL), integrate with GNC/avionics/electrical teams, support integration, launch, and on-orbit ops, investigate anomalies, and mentor other engineers to achieve a near-term on-orbit demonstration.

Develop and support native Android features for eBay’s high-traffic Homepage experience. Responsibilities include coding, testing, deployment, production support, architecture contributions, complex project delivery, code reviews, mentoring, reusable component development, tooling improvements, and collaboration with product, design, backend, and platform teams.

Leads software engineering within an Identity and Access Management team, designing, developing, testing, debugging, and operating secure, scalable applications and APIs. Drives adoption of AI-assisted engineering practices with appropriate validation, improves automation and application stability, evaluates architectural solutions, and promotes modern technologies through technical leadership and communities of practice. Requires expertise in software development, cloud-native systems, AWS, infrastructure as code, REST APIs, CI/CD, automated testing, and Agile delivery.

Develops, integrates, tests, deploys, and sustains C++ and C# software for high-fidelity missile warning training in JLVC HLA environments. Responsibilities include software architecture, requirements analysis, agile development, unit testing, code reviews, documentation, customer collaboration, risk identification, and schedule estimation across classified and unclassified environments.

Build and release full-stack product features for case management and applicant experiences. Develop complex React interfaces, backend services, data models, APIs, document collaboration tools, and real-time workflows. Partner with product, design, operations, and customers to create usable solutions. The role also involves supervising AI-assisted workflows and addressing state management, synchronization, concurrency, performance, workflow orchestration, queues, retries, and idempotency.

Design, develop, and maintain scalable, cloud-native Java/J2EE services and APIs for equity investments. Collaborate with business and engineering teams to document requirements, implement multi-threaded solutions, create tests, perform code reviews, mentor junior engineers, and apply CI/CD and agile practices to deliver high-quality financial software.

Design, develop, and deliver scalable software systems and APIs across the full lifecycle. Lead architecture, integrate AI/ML components, implement microservices/serverless and CI/CD, ensure security, observability, and performance, mentor engineers, and collaborate with product and business stakeholders to meet timelines and quality standards.

Build and operate full-stack interfaces, backend services, APIs, and data pipelines that collect human feedback for reinforcement learning. Partner with researchers to launch data collection campaigns, improve reliability and latency, create monitoring and inspection tools, and move high-quality feedback into training systems. Own projects end to end, make architectural decisions, and improve the usability and throughput of researcher- and annotator-facing tooling.

Develop and operate highly scalable backend systems and AWS infrastructure. Responsibilities include maintaining Python HTTP services, working with DynamoDB, Elasticsearch, and Redis, provisioning cloud resources through infrastructure as code, reasoning about distributed systems, and owning software from design through monitoring. The role also focuses on reliability, security, performance, cost optimization, observability, technical roadmaps, and collaboration with engineering and product stakeholders.

Design, document, implement, and maintain enterprise APIs and API gateway capabilities. Develop scalable search with natural language capabilities, automate CI/CD and testing, integrate IAM, maintain developer portals, and improve API lifecycle processes. Provide technical guidance, conduct code reviews, and ensure secure, performant, maintainable software across cloud-native environments.

Develop and enhance health data management products, collaborating with cross-functional teams and ensuring high-quality deliverables in a fast-paced environment.