Top Senior Software Engineer Jobs

Lead and coach a software engineering team to design and deliver production-grade reference architectures, sample applications, and reusable implementation patterns. Provide hands-on technical leadership across cloud-native, containerized, and distributed systems; drive architecture and adoption of best practices; partner with platform and infrastructure teams; participate in coding, prototyping, and troubleshooting; manage staffing, prioritization, and delivery planning.

Lead design, development, testing, deployment and support of cloud-native Java microservices and APIs. Build event-driven data pipelines using Kafka, work with AWS EKS/ECR/EC2/Beanstalk, implement CI/CD and containerization, collaborate in Agile teams, and drive technical alignment and innovation across IB Tech & CRM/Analytics.

Design and implement event tracking and behavioral analytics, build and maintain A/B and multivariate experimentation pipelines, integrate tools like PostHog or GrowthBook, create dashboards and data pipelines for experiment results, and work with marketing to rapidly deploy landing page variants.

Lead the architecture and scaling of a hyper-scalable API platform and microservices, enable enterprise integrations (AWS Marketplace, SaaS), deliver trust features (granular billing, data residency, auditability), establish platform standards and self-service tooling, and drive engineering velocity and cross-team technical strategy.

Lead end-to-end engineering initiatives across the platform: design and build scalable backend services, APIs, and frontends; prototype quickly; iterate from user feedback; apply AI tooling to improve velocity; own production systems and architectural decisions.

Design, prototype, and evaluate quantum algorithms for finance; build and maintain quantum software libraries and simulators; collaborate with scientists and engineers to integrate quantum solutions; publish research and present technical findings internally and at conferences.

Design, implement, and optimize C++ trading applications for equities, including trading ticket functionality, negotiation workflows, and post-trade processing. Collaborate with stakeholders and cross-functional teams, debug large codebases, improve performance and scalability, and partner with QA to deliver resilient, low-latency distributed systems.

Senior Software Engineer at Twilio will design, build, and maintain scalable communication systems, collaborate with cross-functional teams, mentor engineers, and contribute to architecture and delivery. Responsibilities include writing high-quality code, improving performance and reliability, shipping product features, and participating in technical planning within a remote-first, inclusive environment.

Lead architecture and delivery of highly available healthcare and payment systems. Design, implement, and operate cloud-based services, drive engineering standards, mentor engineers, and resolve complex production incidents.

Design, develop, test, deploy, and maintain backend systems for StubHub's Sponsored Listings ad platform. Provide technical leadership, translate product requirements into engineering plans, ensure stability and reliability, own projects end-to-end, and mentor junior engineers.

Design, develop, test, deploy, and maintain backend and frontend systems for StubHub's supply platform. Build scalable, reliable services and APIs to manage seller inventory, meet SLAs, reduce operational costs, and protect against fraud and legal constraints. Mentor engineers and drive technical and product strategy.

Develop and maintain R&D and production software for next-generation radar products, integrate software on COTS hardware, support deployed capabilities for U.S. and international customers, and collaborate on-site in Los Angeles following Agile, CI, and TDD practices.

Lead technical direction for the Growth team at Sanity.io, focusing on scalable solutions, mentoring engineers, and making data-informed architectural decisions.

Develop responsive, user-facing web application components for a centralized AI/ML annotation and model repository. Translate UI/UX designs to interfaces, integrate with backend services via REST/GraphQL, implement performance and security best practices, and author frontend tests and automation. Participate in Agile development and collaborate with end users and designers while maintaining operational systems.

The Senior Engineer will participate in product evaluations, make architectural decisions, write clean code, and work with various technologies in an Agile environment.

You will develop and maintain components of the LLVM based toolchain, collaborating with the community while ensuring platform-specific optimizations and tests.

Design, develop, and support scalable cloud-native full-stack applications using Node.js/TypeScript, Svelte, and Rust. Manage PostgreSQL databases, Linux servers, Kubernetes/ECS deployments, and AWS services. Provide technical leadership, mentor engineers, drive architecture and CI/CD, troubleshoot production issues, and collaborate with cross-functional teams to deliver reliable SaaS features.

Design, develop, and test complex web software and systems. Provide technical guidance, participate in architecture decisions, conduct code reviews, ensure code quality, mentor team members, and collaborate cross-functionally to deliver high-quality solutions.

The role involves architecting and implementing LLM-powered tools to enhance developer productivity, automate mundane tasks, and establish best practices for AI integration in development processes.

Translate requirements and designs into production code using industry-standard techniques. Analyze and resolve issues in existing systems, collaborate with cross-functional teams, and contribute to software development and maintenance.

Design, build, test, deploy and maintain full-stack features for seller-facing systems. Collaborate on architecture and best practices, own projects end-to-end, and mentor junior engineers to improve team capability.

The Fullstack Engineer will lead product development, contribute to team dynamics, and utilize a diverse tech stack, prioritizing curiosity and ownership.

Build and maintain backend services for the Training Data Storefront (TDS): design and implement features, RESTful APIs and streaming services, optimize performance, use Python, Docker, Kubernetes and AWS, follow SDLC best practices, mentor teammates, and work directly with end users in an Agile environment.

Design, develop, and maintain full-stack web applications and scalable backend services for a DoD/IC Training Data Storefront. Implement responsive frontends, Python-based APIs, containerized deployments on AWS, and ensure performance, security, and test coverage while collaborating in an Agile team.

Design and implement advanced digital signal processing and machine learning algorithms for radar, EW, SIGINT, and RF geolocation; prototype and transition DSP/ML models to real-time, field-ready software across on‑premises and cloud environments in support of US intelligence and defense missions.