Top Senior Software Engineer Jobs

Develop and maintain responsive web applications using React.js, Next.js, and Tailwind CSS. Build reusable front-end components, optimize performance and scalability, integrate RESTful APIs and web services, and collaborate with design and backend teams. Apply continuous testing with Storybook, Cypress, and Jest while supporting mobile experiences, cloud technologies, and emerging web development practices.

Build and scale the core product using Python, while ensuring performance and reliability, in collaboration with founders in a fast-paced environment.

As a Software Engineer, you'll architect and scale distributed systems, mentor junior engineers, and influence product decisions for AI development projects.

Lead Elasticsearch search relevance and vector search initiatives, designing and implementing new search features, algorithms, data structures, and bug fixes in modern Java. Improve search speed and relevance, contribute to Lucene, collaborate with a globally distributed engineering community, guide projects autonomously, review code, and work with technologies including Elasticsearch, Solr, PostgreSQL, MongoDB, and Cassandra.

Lead the technical strategy for Patreon's backend platform, managing scalable distributed systems, APIs, and infrastructure. Collaborate with product teams and mentor staff engineers, emphasizing reliability and operational excellence.

The Software Engineer will design and develop full-stack applications to enhance application security, using modern development practices and leveraging AI tools.

The Software Engineer III is responsible for developing and troubleshooting software for baggage handling systems, requiring collaboration with engineering teams and customer visits to ensure effective implementation.

Manage and mentor a software engineering team to deliver secure, scalable workforce management solutions. Oversee delivery, vendor integrations, automation, monitoring, and support. Drive engineering best practices, tooling adoption, cross-team collaboration, performance reviews, and technical escalation while evaluating new technologies and enabling engineering productivity.

Build and optimize low-level, high-performance software and cloud-scale storage systems for multimodal data streams. Focus on OS-level systems programming, performance engineering, and improving data pipelines and I/O for ML workloads. Collaborate with teams to integrate storage formats and ML infrastructure; work onsite in NYC, SF, or London.

Design, build, and maintain full‑stack features across frontend (TypeScript + React) and backend (Python, Node.js, or JVM languages). Own end-to-end development, testing, CI, databases, and cloud/distributed systems. Mentor engineers, participate in code reviews and pair programming, and work in an agile, remote team.

Senior full-stack engineer responsible for designing and building end-to-end features across frontend (TypeScript + React) and backend (JVM languages, Python/Node.js). Owns code quality, testing, CI, and collaborates in agile teams. Mentors junior engineers, participates in code reviews and pair-programming, and works with cloud, databases, and distributed systems. Remote role with occasional in-person meetups.

Develop, maintain, and run Pig and PySpark analytics; review data ingest tickets and merge requests; ensure reliable, accurate data delivery and investigate data ingestion issues; support automation and continuous monitoring for system security evaluation lifecycle.

Design, develop, test, and maintain PKI software across Red Hat Certificate System and Dogtag. Integrate PQC algorithms, HSMs, and ACME automation; collaborate with product engineering and government teams; own issues end-to-end and contribute to CI/CD, testing, and release quality while communicating status to stakeholders.

Design, develop, deploy, and maintain enterprise GIS applications and databases. Build custom tools for geospatial intelligence workflows, troubleshoot technical issues, recommend technologies, and support distributed processing and streaming geospatial data to meet mission requirements.

Design and build real-time risk decisioning and tooling to prevent payments fraud. Implement fraud signals at scale, manage dispute and chargeback workflows, monitor metrics (loss, dispute, approval, false positives), lead investigations into emerging fraud patterns, and collaborate cross-functionally with finance, support, legal, data science, and external payment partners.

Design and build Go-based control-plane services, CSI drivers, storage integrations, observability tools, and infrastructure automation for Kubernetes AI platforms. Integrate enterprise and scale-out storage, support bare-metal and hybrid provisioning, and deliver declarative Terraform/OpenTofu and GitOps workflows. Architect reliable storage solutions for Kubernetes clusters, air-gapped environments, and sovereign infrastructure, including artifact mirrors and PKI/TLS.

Lead the design and development of mission-relevant software, build backend services and APIs, mentor engineers, and support technical demos.

Lead technical direction and hands-on execution for major software products and systems. Design scalable architectures across backend, frontend, APIs, databases, and infrastructure; write code; drive architecture decisions; solve production issues; improve testing, security, observability, and development practices; lead critical initiatives; and mentor engineers across distributed international teams.

Owns technical direction and hands-on execution for major products and systems. Designs scalable backend, frontend, API, database, and infrastructure solutions; writes code; leads architecture decisions; resolves production issues; improves engineering quality; drives critical initiatives; and mentors engineers across teams.

Owns technical direction and hands-on execution for major products and systems. Designs scalable backend, frontend, API, database, and infrastructure solutions; writes code; drives architecture decisions; leads critical initiatives from design through production; improves engineering quality through testing, security, observability, and development practices; and mentors engineers across teams.

Design, build, and operate high-scale, highly available payment APIs and distributed services using Java and Spring Boot. Integrate global payment channels, safeguard user assets through consistency, idempotency, reconciliation, and recovery mechanisms, and resolve complex distributed-systems issues. Collaborate across product, design, and partner teams, contribute to technical standards through design and code reviews, mentor engineers, and own systems from design through production.

Build and operate high-scale cloud services that ingest, transform, store, and distribute geospatial and weather data. Modernize legacy systems, integrate AI and LLM workflows, improve platform reliability, optimize costs, maintain security compliance, and support multiple concurrent initiatives from design through production. Collaborate with product, operations, science, technology teams, and enterprise clients in a mission-critical 24x7 environment.

Develop and own backend features for the Payments & Partnerships domain using server-side Kotlin/Java (or similar). Collaborate with product, marketing, and frontend teams from design through production. Produce clean, testable code with high test coverage, deploy via CI/CD, and leverage AI/LLM tools to improve developer productivity.

Design, architect, develop, integrate, test, and administer embedded real-time software for flight and mission-critical systems. Participate throughout the software development lifecycle, collaborate with multidisciplinary Agile teams, resolve system and programming issues, and deliver software products across multiple baselines. The role requires C, C++, Python, RTOS, multithreaded development, software integration and testing, and an active U.S. Secret clearance.

Provides organization-wide technical leadership across full-stack systems. Defines architecture and engineering strategy, solves complex cross-system problems, drives performance, scalability, security, and lifecycle health, and mentors engineers. Requires deep backend expertise with Java and distributed data systems, plus expert frontend skills in JavaScript, React, TypeScript, and modern tooling. Partners with engineering and product leaders on high-impact initiatives in a FedRAMP environment.