Top Senior Software Engineer Jobs

Designs, develops, tests, and maintains scalable identity and access management applications using Java and JavaScript. Responsibilities include software design, complex bug fixes, code reviews, CI/CD implementation, operational logging and alerting, requirements analysis, technical issue resolution, and collaboration with cross-functional teams. The role also involves pair programming, mentoring junior developers, and working with identity providers, cloud infrastructure, databases, and containerized environments.

Develops command-and-control and autonomy software for uncrewed platforms supporting DoD customers. Responsibilities include software architecture, flight-critical development, automated unit and integration testing, configuration management, code maintenance, and Agile delivery. The role requires collaboration with development teams, adherence to software safety practices, and leadership of small to mid-sized teams in an on-site Huntsville environment.

The Principal Software Engineer will design automated ad serving systems, lead technical direction, collaborate with teams, and mentor engineers.

Build and deliver full-stack features for a web-based broker platform, collaborate with product and design, manage technical debt, shape architecture for scalability, participate in code reviews, and adopt AI-powered developer tools.

Own and evolve Relativity's agentic infrastructure: agents, model routing, context pipelines, inter-agent communication, and supporting services. Deploy and operate local LLM inference across Mac Studio and GPU hardware, manage Linux/macOS systems, Proxmox VMs/containers, multi-site networking, storage and recovery. Build CLIs, dashboards, automation, improve observability and failure recovery, contribute upstream open-source, design security for local compute and package the stack for internal and customer deployments.

Lead cross-team software engineering initiatives spanning web, desktop, mobile, embedded integrations, APIs, and AI-native capabilities. Build scalable retrieval, ingestion, agent, tool-calling, memory, evaluation, and security systems using React, TypeScript, Python, and Postgres. Define technical strategy, make major architecture and prioritization decisions, ship intuitive SaaS products, mentor senior engineers, and influence leaders across the organization.

Lead cross-team product engineering initiatives spanning web, desktop, mobile, embedded integrations, APIs, and AI capabilities. Build scalable full-stack systems using React, TypeScript, Python, and Postgres, including agent harnesses, retrieval, tool calling, memory, workflows, and evaluation systems. Set technical direction, make product and architecture tradeoffs, mentor senior engineers, and deliver secure, intuitive products for legal and professional-services customers.

Build and own end-to-end software components for an AI-native banking platform, from architecture and implementation through deployment, observability, testing, and maintenance. Collaborate with customers and product managers, make pragmatic technical trade-offs, conduct code reviews, share best practices, and support team delivery. The role emphasizes reliable web application development, production SaaS experience, scalability, and operational resilience in a high-intensity startup environment.

Staff Software Engineer responsible for making architectural decisions, contributing approximately 70% code, leading complex initiatives, mentoring engineers, and improving engineering execution, reliability, and controls. The role involves building scalable SaaS applications for a banking platform using TypeScript, React, NextJS, PostgreSQL, Prisma, Python, and AWS. Candidates should have strong web architecture, relational data modeling, cloud platform, strategic problem-solving, and production SaaS experience.

Develops complete backend software solutions across the SDLC, including design, implementation, testing, delivery, and operations. Advises management on project issues, guides junior engineers, and makes technical decisions independently. The role focuses on Python backend development using frameworks such as Django or Flask, with opportunities to work on distributed systems, cloud platforms, databases, messaging, CI/CD, testing, and observability.

Leads hands-on development of scalable Java software systems, APIs, and reservation platforms. Sets architecture direction, manages AWS infrastructure, integrates databases and messaging systems, prevents reservation overbooking, and drives testing, monitoring, troubleshooting, and continuous improvement. Collaborates with product, architecture, business, and engineering teams while mentoring engineers and promoting AI-assisted development practices.

Design, build, test, and maintain low-latency, high-throughput trading services on an Aeron-based platform. Expand trading protocol features, migrate workflows to the new stack, optimize performance and scalability, support production reliability, and collaborate with cross-functional teams while using AI-assisted development tools.

Develop and integrate modeling and simulation software for space domain awareness, including orbital event modeling, ephemeris generation, state-vector conversion, predicted observations, and mission-data workflows. The role includes containerizing tools, integrating APIs and data sources, testing production software, and collaborating with physics and M&S experts. Work supports U.S. Space Force training and exercises in a classified environment, with quarterly travel to Vandenberg Space Force Base.

Own and architect BaseOS backend services that coordinate distributed batteries and operational workflows. Build scalable systems in Go and Python, manage AWS infrastructure with Terraform, and design reliable APIs and distributed systems. Partner with hardware, deployment, and operations teams, make high-impact technical decisions, mentor engineers, and lead end-to-end system ownership in an ambiguous startup environment.

Lead the technical direction and delivery of Genie One across web, iOS, Android, macOS, and Windows. Build shared frontend infrastructure, native capabilities, authentication and governance systems, and reusable cross-platform patterns. Improve architecture boundaries, testing, release automation, telemetry, performance, and security while mentoring engineers and driving complex customer-facing projects from definition through adoption.

Build and maintain full-stack web applications and platform capabilities end to end. Design APIs, relational database schemas, and distributed systems with strong observability and monitoring. Partner with product stakeholders, participate in code and design reviews, mentor engineers, and raise engineering standards. The role requires onsite work in Chicago and involves developing telematics technology for trailer safety, cargo security, and transportation visibility.

Develop and test production-quality autonomy software for embedded uncrewed multi-vehicle systems and autonomous flight in complex environments. Responsibilities include software architecture, AI/ML and robotic planning integration, unified software architecture development, system integration, technical presentations, and collaboration with multidisciplinary engineering teams. The role may involve occasional travel to remote test events and requires obtaining and maintaining a U.S. Department of Defense security clearance.

Leads technical direction for Venmo’s identity platform, including authentication, authorization, identity verification, and fraud risk systems. Defines architecture and engineering standards, drives cross-team initiatives, mentors senior engineers, and partners with product, legal, compliance, and security teams. Owns service performance, availability, scalability, regulatory alignment, incident support, and secure cloud infrastructure.

Own frontend architecture, design systems, scalable components, UX-focused features, testing, deployment tooling, and observability. Partner with product and design to deliver customer-facing functionality, improve engineering workflows, support on-call operations, adopt LLM-assisted development, and mentor engineers. The role requires establishing frontend standards and patterns for a rapidly growing early-stage healthcare technology product.

Build and maintain scalable, production-ready software for Reserv’s claims automation platform. The role emphasizes backend development with Ruby and Ruby on Rails, including API design, data modeling, performance optimization, security, and reliable deployment. Engineers may also contribute to React and TypeScript front-end work, infrastructure, and CI/CD optimization. Success requires strong collaboration, communication, ownership, and adaptability in a fast-growing insurtech environment.

Design, develop, test, deploy, and support full-stack business-critical applications. Collaborate with product and technical leads to gather requirements, troubleshoot production issues, write tests, leverage CI/CD, design database schemas, mentor junior/offshore engineers, and influence technical standards and tooling.

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, 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 design and implementation of analytical software for underwater vehicle data. Define architecture, lead small teams, manage requirements/CDRLs, perform testing (remote and onsite), interface with customers, produce documentation, conduct trade studies, and mentor junior engineers. Support system requirements, hazard analysis, and deliverables for DoD programs.

Design and build scalable developer-platform architecture, tooling, testing frameworks, CI pipelines, deployment processes, and engineering guardrails. Lead AI-driven development-tool adoption, improve software quality and performance, remove development friction, modernize legacy patterns, and create reliable release processes supporting daily deployments, canaries, traffic replay, and enterprise feature bundling.