Top Senior Software Engineer Jobs

Design, implement, and optimize Elasticsearch core storage and query engine components for observability workloads. Drive architectural improvements, resolve performance bottlenecks in indexing and serialization, optimize data layouts for object storage, lead cross-organizational initiatives, mentor engineers, triage community issues, and write idiomatic modern Java in a distributed team.

Design and implement the Stack Forging software suite for high-performance thermal manufacturing. Develop 3D geometry algorithms and 2D motion/path-planning to improve part accuracy and throughput. Take features from requirements to production, collaborate in an agile team, improve code quality, and work with external designers and developers. Onsite role in Burlington, MA.

Drive architecture and technical vision for Elasticsearch core storage and query engine. Lead performance and storage-efficiency improvements, design indexing/serialization/data layouts, mentor engineers, coordinate cross-organizational initiatives, triage community issues, and write idiomatic modern Java for logs and metrics workloads.

Lead development on the Appian platform (SAIL), ensuring performance, scalability, reliability, and modern tooling. Design and implement full-stack features, perform performance analysis and tuning, conduct code reviews, mentor junior engineers, drive refactors and automation, and document technical designs and long-term platform changes.

Build and maintain user-facing eCommerce features and scalable backend services/APIs. Collaborate on architecture, design reviews, and product planning; optimize performance and implement engineering best practices; mentor teammates and communicate across product, design, and engineering.

Technical lead for the Mobile BFF team owning architecture and development of GraphQL BFF services for native mobile apps. Drive technical decisions, mentor engineers, improve performance, de-risk complex work, maintain CI/CD, and collaborate across teams to ensure scalable, reliable mobile experiences.

Design, build, and maintain scalable GraphQL Backend-for-Frontend services for Procore mobile apps. Collaborate with infrastructure and platform teams, mentor engineers, implement CI/CD (CircleCI, ArgoCD), ensure reliability and performance, and balance short-term and long-term architectural tradeoffs using technologies like Ruby on Rails, Node.js, Java, AWS, Kubernetes, Postgres, and TypeScript.

Design, code, and test enterprise database software within an Agile Scrum team. Research new solutions, participate in design/code reviews, develop automated tests, and maintain high-quality z/OS system-level functionality for Datacom.

Build and maintain the GG App across Windows, macOS, and iOS including installers, background services, auto-update systems, enterprise deployment paths, health reporting, AWS backend, and documentation. Lead architecture decisions, mentor engineers, participate in on-call support, and champion AI adoption and automation across engineering.

Lead design and development of scalable connectivity and integration capabilities across MuleSoft, Salesforce, and Agentforce. Define technical direction, mentor engineers, build APIs and event-driven workflows, and drive architecture, performance, and operational stability across large production systems.

Lead and manage an API engineering team owning core services for Fundrise investor applications. Set technical direction, coach engineers, drive architecture, ensure production quality, security, monitoring, and coordinate cross-team delivery.

Lead design and development of native Android applications, shape architecture and delivery, mentor engineers, ensure code quality and CI/CD, integrate APIs and third-party SDKs, support full app lifecycle and post-production, and explore AI-assisted engineering and agentic AI capabilities to improve developer productivity.

Own and deliver complex backend features for a SaaS platform end-to-end. Write production-ready code, define test strategies, handle incident response, use AI tools in development, collaborate across product and design, and improve developer workflows, deployments, and system reliability.

Design and build large-scale distributed batch and streaming systems for web document processing and rendering. Collaborate with stakeholders, create system designs and interfaces, improve test coverage, implement integration tests, and optimize automation, reliability, monitoring, and Live Site operations. Mentor peers and uphold engineering best practices.

Design, develop, and maintain iOS mobile applications using native and cross-platform technologies. Collaborate with UI/UX, product, and backend teams; write clean, maintainable code; troubleshoot and optimize performance; ensure security and quality; manage app store submissions; participate in code reviews and knowledge sharing.

Build and ship customer-facing Microsoft Edge features to drive acquisition, engagement, retention and growth. Partner with PM, Design, and Data Science to turn insights into product. Build and operate scalable experimentation, telemetry, analytics, and AI-driven platforms and data pipelines. Drive end-to-end projects, improve reliability and performance, ensure security and compliance, mentor engineers, and influence long-term architecture and platform strategy.

Build end-to-end full-stack features for cloud and factory-floor edge applications. Implement offline-capable, low-latency UIs and backend services, design APIs, write tests, troubleshoot production issues, and collaborate on shared libraries and developer tooling to support factory operators and supervisors.

Technical lead responsible for designing, building, integrating, deploying, and sustaining secure, scalable full‑stack applications. Works across front-end, back-end, APIs, databases, integrations, CI/CD, and infrastructure-as-code. Establishes architecture and engineering practices, leads troubleshooting and production support, mentors engineers, produces technical documentation, and partners with stakeholders to deliver mission-critical AI-enabled solutions in an Agile environment.

Lead design and delivery of cloud and AI production systems, partner with stakeholders to translate needs into architecture, ensure security and quality, mentor engineers, and drive customer adoption and scalable reusable solutions across engagements.

Design, build, and operate scalable, production distributed systems for publisher onboarding, ad quality, and monetization. Gather requirements, write reusable code, break down work, act as on-call DRI, and improve availability, performance, and observability while leveraging cloud and AI/ML technologies.

Build polished, high-performance React/TypeScript web applications and end-to-end features using FastAPI and Postgres. Lead frontend architecture, state management, and UX for data-dense scientific workflows. Collaborate with scientists, robotics, and AI teams, leverage LLMs to accelerate prototyping, ensure testable, secure code, and mentor junior engineers while shipping production-ready tooling for laboratory automation and imagery workflows.

Design and build a real-time, deterministic world model and decision engine for satellite networks. Implement high-throughput, low-latency distributed systems (100k+ msgs/sec) in C++/Rust, develop autonomous routing and constraint-based optimization pipelines, deploy on AWS, add observability, and operate/debug live systems with direct customer interaction.

Design, build, secure, and scale native, web, and cloud components for automotive IoT. Architect solutions with React/NextJS/TypeScript, implement backend services in Python, manage cloud deployments, and integrate databases (MongoDB and SQL) while collaborating with HIL and embedded teams.

Design, develop, test, and maintain software for the Tomahawk program, translating customer requirements and ensuring product reliability. Requires 5+ years experience in .NET and SQL, with a Secret clearance.

Lead and deliver complex Android features, set technical direction, mentor junior engineers, improve CI/CD and observability, collaborate cross-functionally, support production incidents and drive architectural improvements.