Top Senior Software Engineer Jobs

Build and operate shared cloud infrastructure and backend services using Java, Redis, Docker, Terraform, and AWS. Design scalable, resilient systems; evaluate and roll out common frameworks; conduct code reviews; write tests; monitor and troubleshoot services; optimize performance; and mentor junior engineers. Collaborate with architects, QA, product, security, and operations teams while supporting high-scale, multi-tenant deployments.

Designs and builds scalable, resilient distributed systems and applications using .NET, C#, microservices, REST APIs, cloud platforms, containers, and DevOps practices. Responsibilities include architecture, coding, code reviews, reusable components, monitoring, continuous delivery, infrastructure as code, cross-functional collaboration, mentoring engineers, and improving engineering processes.

Design, build, and operate scalable backend services for a digital mortgage platform using Node.js, TypeScript, PostgreSQL, MongoDB, AWS, and Docker. Responsibilities include API and data architecture, cloud deployment, reliability and security, production troubleshooting, performance optimization, observability, and CI/CD collaboration. The role leads technical design and code reviews, mentors engineers, coordinates with global teams, and owns major engineering workstreams.

Develop and support high-volume, mission-critical web applications across the full software development lifecycle. Build with TypeScript, JavaScript, Next.js, and SQL; deploy and operate applications in Microsoft Azure; use AI-assisted development tools; troubleshoot complex technical issues; make architectural decisions; and mentor other engineers. The role requires multi-tier system development, database optimization, Agile collaboration, and proactive delivery of reliable, high-quality software.

Develop and deliver high-volume enterprise applications across the full software development lifecycle. Design, code, test, debug, optimize SQL solutions, troubleshoot complex issues, contribute to scalable architecture, collaborate with technical and business stakeholders, and mentor other developers. Work independently while participating in Agile development and production implementation.

Design, build, and operate large-scale observability services for monitoring, logging, alerting, tracing, metrics, and real-time data processing. Own distributed tracing, data collection, cloud-native infrastructure, AI workflow instrumentation, and AI-driven anomaly detection. Partner with product teams on SLOs and production readiness, evaluate emerging technologies, maintain data quality, and participate in on-call support.

Develop modular test, automation, hardware-interaction, and analysis software for spacecraft and launch vehicle components. Build factory automation, drivers, web interfaces, and firmware; analyze test data against acceptance criteria; troubleshoot software-hardware failures; and manage project milestones for reliable production test systems. The role works cross-functionally with hardware, manufacturing, and engineering teams and may require extended hours and weekends.

Own and evolve enterprise AWS infrastructure, governance, security, identity, networking, and shared platforms. Build and operate full-stack services in TypeScript and Python, automate infrastructure and delivery, improve monitoring and reliability, manage incidents and on-call operations, and establish audit-ready controls. Partner across engineering and IT, improve production readiness, and mentor engineers while delivering secure, scalable, low-blast-radius systems.

Develop and sustain mission-critical software and systems for a U.S. Government customer. The role requires full-stack Java and Angular experience, collaboration with engineering teams, independent work, and strong communication. Candidates must hold an active or reinstatable TS/SCI with Polygraph clearance, be U.S. citizens, and have 14 or more years of software engineering experience plus a relevant bachelor’s degree or approved experience substitution.

Develop and sustain mission-critical software and systems for a U.S. Government customer. The role requires strong software engineering expertise, AWS and back-end development skills, collaboration, independent work, and effective communication. The position supports a large government contract and requires an active or reinstatable TS/SCI clearance with polygraph, U.S. citizenship, and extensive professional experience. It is based in Hanover, Maryland, with partial telework potentially available after acclimation.

Build, own, deploy, and operate backend services and APIs powering Mozilla products. Responsibilities include backend development, cloud infrastructure collaboration, monitoring and alerting, production support, incident response, releases, security and privacy reviews, API design, code reviews, and mentoring. The role requires end-to-end service ownership, on-call participation, and maintaining reliable production systems.

Build and own backend services for Mozilla’s Ecosystem Services, including server-side logic, APIs, distributed systems, cloud infrastructure, monitoring, deployments, and production reliability. Participate in on-call support, incident response, releases, security and privacy reviews, code reviews, and cross-functional collaboration. Mentor junior engineers and drive improvements in quality, testing, and engineering processes.

Develop and sustain mission-critical software and systems for a U.S. Government customer. Responsibilities include backend Java development, REST API and service architecture, database integration, debugging, code reviews, automated testing, and Agile collaboration. The role may also involve distributed systems, CI/CD, DevOps technologies, cloud platforms, containerization, and technical problem-solving. An active or reinstatable TS/SCI clearance with polygraph and U.S. citizenship are required.

Build and own full-stack features across patient, clinician, and operational healthcare products. Responsibilities include architecture, scalable coding, testing, CI/CD, code review, technical discussions, stakeholder collaboration, and mentoring. The role requires daily use of AI coding tools and ownership of projects from ideation through rollout. Experience with healthcare, EHR integrations, regulated domains, or consumer startups is beneficial.

Lead design and implementation of Pinterest's exabyte-scale data lake storage and metadata systems. Drive architecture and execution for scalable storage features supporting large ML/AI workloads, collaborate across data/ML/infrastructure teams, and contribute to open-source projects (Iceberg, Spark, Flink).

Develop native applications for iPhone, iPad, Apple TV, and Apple Vision Pro. Lead feature development across the application lifecycle, write well-tested and performant code, resolve production issues, improve team processes, and collaborate on sustainable architectures. Mentor engineers through code reviews and pair programming, guide agile delivery, and present solutions to technical and non-technical stakeholders. Integrate backend systems, web services, and third-party software, with AVPlayer and video playback experience preferred.

Build and enhance ABC News direct-to-consumer client applications for Roku streaming devices and smart TVs using BrightScript and SceneGraph. Develop onboarding, browsing, analytics, video playback, and UI features; create reusable components and utilities; optimize performance across devices; and collaborate with Roku, design, SDK, backend, mobile, and product teams. Contribute to JavaScript, React, Node.js, build tooling, AWS, and DevOps systems while supporting hardware, firmware, and certification efforts.

Design, build, deploy, and operate cloud infrastructure and scalable I/O systems for scientific computing, physics simulations, AI workflows, and data-intensive workloads. Optimize compute, storage, and network architectures across CPU and GPU environments. Develop algorithms, debug systems and third-party code, and improve performance across distributed systems, operating systems, kernels, compilers, and parallel-processing frameworks while collaborating independently across teams.

Own the design, development, and automation of Coinbase’s routing infrastructure connecting services to Kubernetes backends. Build scalable capabilities using Envoy, Istio, Ambient Mesh, and SPIFFE; improve routing latency, reliability, and performance; enhance developer tooling with responsible AI; and collaborate with security, reliability, and observability teams to resolve complex distributed-systems issues.

Develop scalable backend services and APIs, create coding tasks and deterministic verifiers for AI systems, debug complex codebases, optimize performance, refactor legacy systems, implement features, and provide technical reviews and reasoning. The role is remote, contract-based, and part-time at 15–20 hours per week.

Develop LLM-powered automation and agent tooling for legacy code analysis and modernization. Build cloud-native migration services, scalable Spark and Databricks data platforms, ETL frameworks, data models, validation controls, and Airflow-orchestrated workflows. Reverse-engineer mainframe and database workloads, transform legacy logic into microservices, optimize MongoDB schemas, and implement near-real-time data synchronization. Requires extensive data engineering, cloud, Python, and AI framework experience.

Designs and leads enterprise backend systems, streaming services, distributed architectures, APIs, databases, Kubernetes deployments, and DevOps automation. The role also contributes to full-stack delivery, product ownership, technical prototyping, client presentations, and end-to-end application delivery while coordinating onshore and offshore teams.

Lead development and maintenance of internal design system libraries, tools, and Figma plugins. Implement AI solutions to speed design workflows, own medium-to-large features end-to-end, run internal user research, provide support and on-call coverage, conduct design and code reviews, and collaborate with designers and engineers to drive technical strategy and adoption.

Lead the architecture, development, testing, and maintenance of scalable backend systems and APIs. Drive technical decisions, code quality, performance optimization, documentation, continuous delivery, and monitoring. Collaborate with product, design, and engineering teams to translate requirements into reliable solutions. Mentor junior engineers, conduct code reviews, resolve complex technical issues, and contribute to agile development and overall technology strategy.

Senior Software Engineer supporting a U.S. Government customer by sustaining critical mission-related software and systems. The role requires extensive software engineering experience, strong communication, teamwork, and independent work. Candidates must hold an active or reinstatable TS/SCI with Polygraph clearance and U.S. citizenship. Key technologies include Hadoop, Accumulo, AWS, Terraform, Java, and Python. The position is based in Annapolis Junction, Maryland, with limited telework available after acclimation and training.