Top Senior Software Engineer Jobs

As a Senior Software Engineer, you will lead architecture decisions, mentor engineers, and build scalable cloud services while collaborating closely with product and design teams.

The Staff Engineer will lead the design and development of scalable underwriting platforms, mentor junior engineers, and drive digital transformation initiatives using AI and cloud technologies.

Design, implement, and operate high-scale distributed search services for Microsoft 365 Copilot. Drive architecture, performance, safety, and concurrency; collaborate cross-functionally; improve developer tooling and AI-assisted engineering practices; act as on-call DRI for service reliability.

Lead design and implementation of a scalable user identity graph and supporting pipelines. Collaborate with partner teams and applied scientists, build diagnostics, monitoring, security, and deployment frameworks, run experiments and on-call incident management, and drive code quality, testing, and operational readiness.

Lead architecture and technical direction for Ocient's Loading and Transformation platforms, designing scalable batch and stream ingestion systems. Own ambiguous, cross-team initiatives end-to-end, mentor engineers, and implement high-performance distributed software using modern C++ and/or Java. Partner with product, sales, and customers to translate needs into reliable, petabyte-scale solutions.

Lead the Cloud team to design, build, and operate Northwood's cloud platform for global antenna scheduling, booking, provisioning, orchestration, billing, and customer APIs. Drive architecture for distributed scheduling, telemetry, control and data planes, implement monitoring, collaborate with Ground and Data teams, and mentor engineers to deliver resilient, high-throughput, customer-facing services.

Design, implement, and ship Windows kernel- and user-mode drivers in Rust, harden driver foundations and tooling, lead architecture and design, apply AI-assisted development practices, drive test automation and quality, perform kernel debugging and root-cause analysis, and collaborate with hardware, firmware, and Windows teams.

Senior full‑stack engineer who mentors teams and drives adoption of modern engineering practices (Agile, TDD, ATDD, microservices, containerization). Design and implement solutions across frontend and backend, work with AWS/EKS/OpenShift, manage vendor and cross‑functional dependencies, and collaborate with business, legal, and compliance stakeholders to deliver enterprise software.

Design, develop, and maintain Java-based backend services using Spring/Spring Boot. Build RESTful APIs, write automated tests, use Git/Git Flow, Docker/Kubernetes, Kafka and SQL. Follow modern DevOps practices and collaborate cross-functionally to support payment/FinTech solutions.

Join a portfolio company building an AI platform for sports intelligence as a Senior Software Engineer. Make significant technical contributions, help shape product and company direction, and drive growth alongside the venture firm and leadership team.

Lead engineering of core scheduling and orchestration subsystems for an orbital edge compute platform. Own an MVP for autonomous scheduling across compute node fleets, scale to larger satellite fleets with data sovereignty, design performant and reliable distributed engines, build scheduling and workload-placement logic for intermittent-connectivity edge environments, and provide technical leadership while partnering with cross-functional teams to deliver secure, customer-focused solutions.

Design, implement, and support core platform services to enable Recurly to scale. Participate in requirements and solution design, estimate technical impacts, build reliable integrations, deploy to cloud environments, and collaborate cross-functionally. Use Golang and other languages, follow iterative development, and improve business value through maintainable code.

Design, develop, and deliver high-quality, secure production software. Lead feature design and implementation, author technical documentation, perform code reviews, troubleshoot production issues, support on-call escalations, and collaborate with cross-functional teams to improve scalability, reliability, and security.

Build and operate backend systems and APIs (Go, REST/gRPC) for entitlements, policies, and customer onboarding. Lead cross-team integrations, extend AI features into customer experiences, own features end-to-end, mentor engineers, and drive a product-focused roadmap with iterative delivery.

Lead design, build, and launch a React Native companion app and ship full-stack features across a unified TypeScript stack. Own architecture, app-store release, accessibility (WCAG 2.1 AA), observability, incident handling, code reviews, mentoring, and improvements to CI/CD and testing.

Senior mainframe engineer delivering secure, resilient enterprise application solutions across the full lifecycle: analysis, design, implementation, testing, CI/CD, and production support. Tasks include COBOL/CICS/JCL development, DB2 data work, batch and online processing troubleshooting, SDLC and DevOps practices, modernization and integration (APIs, MQ, z/OS Connect), mentoring junior engineers, and ensuring release readiness, performance, and operational stability.

Design, build, and own scalable multi-tenant SaaS applications across frontend, backend, and data layers. Improve system architecture, performance, reliability, and testing practices. Integrate AI-assisted tools, mentor engineers, conduct code reviews, and collaborate with Product and Design to deliver intuitive, production-grade software.

Build and maintain full-stack features, data pipelines, and cloud infrastructure for large-scale ad management and analytics. Integrate with advertising platform APIs, apply ML/NLP for forecasting and recommendations, collaborate with product and marketing teams, and use AI coding tools to accelerate development.

Design, build, and maintain scalable backend services and APIs for millions of users. Collaborate with product and UX, implement automated testing, participate in on-call incident management, and mentor teammates while delivering complex distributed-system projects.

Lead development of software products across the SDLC, design scalable systems, improve product quality, mentor engineers, drive DevOps/CI-CD and test automation practices, and collaborate cross-functionally to meet strategic objectives and ensure software security and performance.

Build and maintain scalable payroll infrastructure and APIs, integrate AI-powered features into products, collaborate across teams to ensure payroll tax compliance, and contribute to design and delivery of reliable production software. Participate in hybrid on-site work and use AI tools relevant to the role.

Architect and implement scalable customer-facing and back-office systems across frontend and backend. Build REST APIs, web and mobile apps, deploy on AWS, define engineering best practices, mentor junior engineers, and incorporate AI-assisted development to improve productivity and product quality.

Technical lead for the Apps & Behaviors platform powering SmartApps and automations. Design and build scalable, reliable AWS-based services, own features end-to-end (code through infrastructure and releases), improve reliability/observability, apply security-conscious design, adopt AI-assisted engineering practices, and mentor other engineers.

Build and maintain core platform systems powering Astro's public API, authentication, billing, and alerting. Design scalable backend services, collaborate with product and frontend teams, improve platform reliability, and contribute to architecture and operational practices.

Maintain and extend long-term supported forks of major JavaScript frameworks. Develop and secure code in JavaScript/TypeScript, backport fixes, triage and patch CVEs, build CI/CD and automation, collaborate with security and OSS contributors, and drive platform reliability and architecture decisions.