Top Senior Software Engineer Jobs

Design, develop, and maintain high-performance server-side Java applications for fixed-income trading. Optimize for low latency and high throughput, implement Spring Boot services, CI/CD pipelines, containerization, automated tests, collaborate with traders and analysts, and troubleshoot production issues.

Lead technical owner for a legacy CAMA application: maintain and enhance Delphi/SQL systems, modernize SDLC (GitHub, documentation, releases), triage requests with support teams, perform data conversions, and provide weekly plans and cross-functional technical leadership to ensure reliability for 45 customers.

Lead the design, development, and delivery of enterprise software solutions for Public Sector customers, ensuring compliance and technical excellence.

Lead design, development, and maintenance of scalable integration services and ModMed's API ecosystem. Ensure functional and non-functional requirements, drive improvements, mentor engineers, and collaborate cross-functionally to deliver interoperable healthcare solutions.

The Staff Software Engineer will drive technical strategy, lead complex projects, improve engineering standards, and mentor engineers across the organization, focusing primarily on back-end systems but maintaining full-stack awareness.

Diagnose, triage, and fix production defects across a distributed Java/Spring Boot microservices platform. Own issues end-to-end, join incident bridges, coordinate cross-team resolution, reduce recurring defects, and help shape support processes while developing high-quality software and providing subject matter expertise.

Lead technical projects for product scaling. Design and maintain APIs and services, ensuring reliability and user experience while collaborating with product teams.

Design and build Alpaca's low-latency, high-throughput algo trading platform. Implement frontend and backend components, optimize performance, design distributed systems and data models, and develop/order and risk management systems for high availability.

Lead end-to-end design, build, and operation of scalable backend services and customer-facing frontend features. Collaborate cross-functionally to deliver reliable APIs, ensure observability and maintainability, participate in code reviews, improve engineering processes, and help shape technical decisions and culture.

Design and implement highly reliable, high-performance algorithms and systems software for modern data platforms. Own end-to-end delivery from concept to production, diagnose and resolve complex technical issues, influence cross-functional system design, and mentor junior engineers. Drive adherence to performance, reliability (e.g., six 9s), schedules, and architectural vision while collaborating with product and engineering teams.

The Senior Software Engineer will architect, design, develop, and maintain Layer 2 network management and security features while mentoring junior engineers. Responsibilities include writing specifications, developing tests, troubleshooting networks, and providing technical leadership.

As a Senior Software Engineer at Arista, you will design and develop Layer1 software for physical connectivity, interface with customers, and mentor junior engineers.

As a Senior/Lead Software Engineer, you'll design and build network systems features, manage development processes, and collaborate with engineers and customers. Responsibilities include software development in C, C++, Python, and maintaining hardware drivers, while mentoring junior engineers.

Lead engineering and develop API-focused full‑stack solutions for brokerage products. Design scalable architectures, build secure cloud-native applications (AWS), drive API strategy, implement CI/CD and DevOps practices, mentor team members, and ensure code quality via TDD/BDD and security/static analysis tools.

Design and build Java/J2EE Spring-based APIs and multi-layer applications; develop web services and database schemas (DB2/Oracle) with PL/SQL; participate in code reviews, unit/integration testing; coordinate technical deliveries across teams and support CI/CD and DevOps collaboration.

Design, develop, and maintain scalable full-stack applications for intermediary clearing and custody platforms. Collaborate with product, architecture, and engineering teams to modernize applications, implement cloud migrations, build APIs, automate workflows, and improve CI/CD, observability, security, and deployment practices in an Agile environment.

Design and build Java-based, messaging and microservice applications. Lead API design, cloud/container solutions (Docker, Kubernetes, AWS/Azure), CI/CD, and relational database development (DB2/Oracle). Provide technical leadership, mentoring, code reviews, and resolve cross-technology roadblocks. Work on blockchain and digital asset solutions (Ethereum, Solana) and smart contracts (Solidity, Rust, Move) within financial services.

Develop, optimize, and maintain high-throughput C++ software for processing OPIR and remote sensing data on Linux. Lead small teams, implement algorithms for detection and tracking, improve performance and scalability, support integration/testing, participate in code reviews, mentor teammates, and work directly with customers through the software development cycle in an Agile environment.

Develop and optimize high-throughput C++ algorithms for remote sensor data exploitation (image analysis, detection, tracking). Prototype, integrate, and test software within government frameworks as part of an Agile team. Work full-time in-person in Boulder, CO and obtain/maintain DoD security clearance.

Senior pre-sales technical engineer responsible for designing and presenting complex IBM software solutions to partners and clients, gathering requirements, mentoring junior staff, and driving partner enablement KPIs such as design volume, customer engagements, accuracy, timeliness, and satisfaction.

Develop, optimize, and integrate high-throughput C++ algorithms and multi-object tracking software for counter-UAS and remote sensing systems. Work in an Agile small-team environment to prototype, test, and deliver low-latency processing solutions within government frameworks.

Design, develop, and maintain scalable, secure backend services and APIs for a healthcare caregiver platform. Drive cloud-native modernization (microservices, serverless), ensure compliance (HIPAA, OWASP), troubleshoot production issues, optimize performance, mentor junior engineers, and collaborate with product and architecture teams to deliver reliable, high-performing solutions.

Design, develop, maintain, and test complex enterprise software systems and cloud infrastructure. Implement solutions using COTS/GOTS, analyze system performance, troubleshoot issues, and collaborate with users and systems engineers. Emphasis on OpenStack-based cloud deployment, Linux and Python development, and IT operations support.

Design and build a next-generation performance and analytics platform using OLAP/columnar technologies and cloud-native services. Work across the full software lifecycle to optimize analytical queries, implement developer automation and automated tests, and collaborate with design and strategy to deliver scalable, high-performance investment analytics.

Build tools, libraries, and infrastructure to accelerate Planning development for autonomous vehicles. Improve testing, debugging, metrics, simulation, and evaluation workflows; expose actionable insights from logs and real-world data. Lead infrastructure projects, optimize performance and maintainability, and partner with Planning engineers to increase engineering velocity and safety-case/test coverage.