Top Senior Software Engineer Jobs

As a Founding Staff Software Engineer, you will lead the design and development of robust backend systems and APIs, optimize large-scale data workflows, and mentor a growing engineering team.

The Senior Software Engineer will design and implement services and APIs, mentor team members, troubleshoot existing applications, and engage in Agile product teams to ensure quality, scalable solutions.

The Senior Software Engineer will build a scalable real-time production service, manage distributed inference systems, and oversee data pipeline implementation.

Design and build AI-driven agents and large-scale backend systems to improve efficiency in revenue organizations, ensuring reliability and scalability during high-volume processing.

As a Senior Software Engineer, you will enhance shopper payment systems using Golang and Python, manage backend services, and collaborate with product teams on various solutions.

Design and build scalable, event-driven backend systems for AI agents, ensuring reliable agent logic, orchestration, and fault tolerance across workflows.

The Senior/Staff Software Engineer will build and scale search and retrieval systems to enhance AI agents, ensuring data relevance and accessibility for customer interactions.

As a Senior/Staff Full Stack Engineer, you will design and implement the user interaction systems for Actively's AI Agents, owning the end-to-end development process from backend to frontend, while ensuring high performance and usability based on customer feedback.

Design and build foundational systems for user interaction with AI agents through a web interface, including architecture, features, and intelligent interactions, ensuring high performance and customer-centric experiences.

Build and scale search and retrieval systems for Actively's AI agents, leveraging diverse data sources and improving relevance and precision in outputs.

Own and modernize iHerb's product catalog across backend, React frontend, and relational data. Build end-to-end features, use AI-driven SDLC tools, write automated tests, ensure observability, participate in on-call incident response, and contribute to shared engineering standards.

Design, build, and operate distributed, high-volume transactional backend services in Go. Own scope, architecture, correctness guarantees, production behavior, observability, and automated verification. Collaborate across product, infra, and QA while using agent-driven engineering practices.

Design, develop, and maintain scalable backend systems and microservices for fintech products. Build REST APIs, support greenfield projects and improve existing systems (card payments, treasury, transactions, crypto liquidity). Use Java and Spring Boot with Postgres, practicing TDD, DDD, and CI/CD to deliver maintainable, high-performance services.

Design, develop, and maintain scalable backend systems and microservices (payments, treasury, transactions, crypto). Build REST APIs, use Java and Postgres, apply Spring Boot, TDD, DDD, and CI/CD to deliver maintainable, high-performance services.

The Staff/Principal Software Engineer will work in a remote global team, addressing software engineering challenges while fostering collaboration and clear communication.

The role involves leading application development projects, providing architectural guidance, mentoring teams, and ensuring adherence to best practices in software development. It requires strong understanding of technology and business functions, risk management, and continuous improvement in processes.

The Senior Software Engineer will design, develop, and deliver Citi's low-latency execution platform, collaborating closely with cross-functional teams and enhancing product features and performance.

Support design, integration, testing, implementation, sustainment, and modernization of KC-46 aircraft software. Analyze requirements, develop engineering documentation, perform V&V and software assurance, troubleshoot deficiencies, support airworthiness and safety compliance, and collaborate with government and contractor teams across the system lifecycle.

As a Senior Software Engineer, you will architect and maintain software solutions, mentor junior engineers, and collaborate to deliver robust applications.

Build and maintain event-driven backend and full-stack systems that convert operational events into auditable financial records. Implement billing, settlements, reconciliation, ERP integrations, and reliable APIs with strong focus on idempotency, ordering, failure recovery, and financial correctness. Partner with finance and domain teams, automate manual workflows, own observability and production runbooks, and mentor engineers while participating in on-call rotations.

Lead design, develop, test, and maintain mission-critical software for missile defense. Provide technical leadership, code/system reviews, troubleshooting, integration, deployment, and lifecycle sustainment across the full software development lifecycle.

Lead development of backend systems and integrations to ingest and process large-scale data, design secure multi-tenant SaaS architectures, own APIs and platform work, mentor engineers, author technical proposals, and troubleshoot production issues to minimize downtime.

Lead full‑stack development of the imaging web platform: architect and build ASP.NET Core services and Vue frontends, design secure APIs integrating EMRs and AI, own testing, CI/CD, and Azure deployments, mentor engineers, and collaborate with product, design, and clinical teams to deliver performant, reliable screening experiences.

Lead design and delivery of full-stack imaging features, architect high-performance ASP.NET Core services, build Vue frontends, integrate APIs with EMRs and imaging partners, mentor engineers, enforce automated testing, CI/CD and observability, and drive technical roadmap in an Agile team.

Lead the technical direction for biller-workflow platforms, define frontend/backend standards, solve cross-team problems (data-dense UIs, bulk operations, unified claim timelines), embed AI where valuable, ensure production reliability and performance, and mentor engineers while partnering with product and design to ship incremental, high-impact improvements.