Top Senior Software Engineer Jobs

Lead development of Device OS platform infrastructure connecting industrial machines and applications to Apkudo. Own integration services, APIs, software and model deployment, staged rollouts, rollback, fleet monitoring, telemetry, diagnostics, and operator-facing control surfaces. Partner with robotics, AI, design, and operations teams to create reliable interfaces and deployment workflows for heterogeneous distributed devices.

Design, develop, and maintain complex software solutions across systems; translate requirements into scalable designs; implement best practices, perform code reviews, fix complex bugs, resolve technical issues, and mentor/ train junior engineers.

Develop and maintain scalable desktop application features for Riot Client, focusing on web technologies and integrating C++ components. Contribute to technical design, planning, and implementation; collaborate with product, design, QA, and data teams; understand complex dependencies; and mentor engineers. Help improve game distribution, content, social, and developer productivity capabilities across Riot’s desktop ecosystem.

Develop and ship features for mobile games across Unity/C# clients and Go backend services. Collaborate with Product, Design, and Art, troubleshoot live-product issues, improve code quality, maintain build and content pipelines, conduct testing and code reviews, support releases, and investigate regressions. The role requires ownership from implementation through production with limited supervision.

Lead the design and implementation of scalable, reliable backend systems powering WHOOP’s member experiences. Drive technical planning for complex initiatives, establish engineering standards, deliver platform capabilities, and mentor engineers. Collaborate with product, design, data science, and performance science teams while balancing technical quality, business priorities, observability, and long-term maintainability.

As a Senior Software Engineer, you'll build and extend web technologies, make key architectural decisions, and mentor junior developers in a fast-paced environment.

Build and scale reliable software systems supporting donor platforms, cash payments, and rapid-response programs. Own features end to end from architecture through deployment and monitoring, improve CI/CD and testing, troubleshoot production issues, and collaborate with product, operations, and data teams. The role also contributes to technical roadmaps and sustainable engineering practices in a mission-driven, fully remote organization.

Designs, builds, and operates scalable backend services supporting PayPal’s global credit products. The role develops RESTful APIs, event-driven asynchronous systems, and configuration-driven platforms using Java and cloud technologies. Responsibilities include improving scalability, reliability, performance, observability, and security; translating product, risk, and regulatory requirements into technical solutions; contributing to architecture and design reviews; mentoring junior engineers; and delivering solutions across the full software development lifecycle.

Designs, develops, tests, deploys, and maintains secure enterprise software. Builds full-stack applications, APIs, data models, user interfaces, low-code solutions, and robotic process automation workflows. Translates business requirements into technical solutions, collaborates with IT and business teams, supports agile development processes, and troubleshoots existing applications. The role uses technologies including Power Platform, Python, JavaScript, Swift, Java, Node.js, and cloud data services.

Build and scale Bubble’s backend infrastructure, distributed systems, workflow engine, data tier, and core backbone services. Improve performance, reliability, observability, capacity management, and scalability across billions of requests. Define SLOs, support high-volume workloads, participate in triage and on-call rotations, diagnose incidents, and implement durable fixes while collaborating with a small engineering team.

Design and deliver scalable full-stack enterprise applications using Node.js and Vue.js. Lead architecture and technical design, integrate AI/ML capabilities, optimize development with AI-assisted tools, contribute to cloud deployments and CI/CD, and ensure security, observability, performance, and maintainability. Mentor junior engineers and collaborate with product, data, and AI teams.

Own and evolve scalable distributed systems, REST APIs, backend services, and core product areas. Design solutions, improve resilience, reduce technical debt, and drive modularization. Use AI-first and agentic development practices, evaluate emerging AI tools, and help integrate AI across engineering workflows. Collaborate asynchronously with product, data, and go-to-market teams while improving engineering tools, processes, and system reliability.

Design and develop secure, scalable, cloud-native backend services and APIs using Java and Spring Boot. Define API contracts, data schemas, authentication models, and service boundaries. Deploy and operate services on Kubernetes, collaborate on Helm charts and CI/CD, support production systems, and guide architectural decisions through ADRs. Work across PostgreSQL, object storage, identity providers, observability, and NoSQL systems while helping teams migrate from legacy infrastructure.

Architect and deliver distributed backend systems and infrastructure supporting customer service and KYC compliance workflows. Set technical direction, define roadmaps, lead end-to-end project delivery, mentor engineers, and build reliable high-scale services using Go, gRPC, TypeScript, React, cloud infrastructure, and DevOps tooling. Partner across teams and time zones to improve platform capabilities, workflow efficiency, cost, quality, customer satisfaction, and compliance outcomes.

Build and maintain scalable backend applications, serverless functions, microservices, data workflows, ETL pipelines, and cloud-native architectures using Python and AWS. Manage databases, APIs, batch jobs, and real-time integrations while optimizing performance, scalability, security, compliance, and cost. Collaborate with product, engineering, analytics, and data teams; contribute to architecture, CI/CD, infrastructure automation, development standards, and technical mentorship. Healthcare claims data experience is required.

As a Software Engineer, you will build innovative products, enhance existing solutions, and collaborate with cross-functional teams in a fast-paced environment.

Build and maintain the analyst-facing frontend for Kepler's AI research platform: high-performance, data-dense interfaces (spreadsheets, tables, streaming views) that surface cited, auditable values and verification workflows. Ship end-to-end features, optimize browser performance, implement real-time streaming UX, and ensure traceability from UI cells back to original sources.

Develop and enhance AI Gateway platform, contributing to the design and maintenance of features for optimal reliability in AI workloads while collaborating with cross-functional teams.

Design and develop flight software for space systems, mentor engineers, and ensure adherence to software development principles in an Agile environment.

Develop highly reliable full-stack software and applications used across SpaceX. Responsibilities include designing systems, building prototypes, solving user problems, contributing to architecture and code reviews, and owning software engineering and product development. The role involves improving application performance, testing, deployment, monitoring, in-stream data processing, containerized production systems, front-end applications, and database technologies.

Hands-on senior frontend engineer to set architecture and technical direction for a TypeScript/React/Next.js platform. Own design for data-access, performance, monorepo standards, and CI; diagnose memory and render issues; lead design reviews, mentor a team of ~6, and work with backend, product, and users to translate requirements into scoped work.

Lead design and implementation of a petabyte-scale unified virtual memory and system software stack for accelerator-based large-scale clusters. Build custom allocators, runtimes, schedulers, and Linux kernel/driver components. Integrate and optimize HPC workload managers, ensure high-throughput resource management, and remove kernel-space bottlenecks for massive parallel jobs.

Build and maintain Leland’s platform and foundational infrastructure while collaborating with product, design, and engineering teams. Develop high-quality, performant code, propose product innovations, and ensure quality through testing and code reviews. Contribute to an inclusive, collaborative team culture and help shape products in a fast-paced, AI-native startup environment.

Develop and maintain software and analytics for an enterprise cybersecurity tool, emphasizing automated security authorization, continuous monitoring, data gathering, and reliable data delivery. Responsibilities include Pig and PySpark development, database queries, software design, debugging, testing, documentation, performance improvement, data investigation, and integration. The engineer will collaborate within a Scrum team and review data ingestion tickets and code changes.

Design and develop scalable, high-performance data and API infrastructure for real-time processing. Mentor engineers and collaborate with teams to enhance AI model evaluations.