Top Senior Software Engineer Jobs

Design, develop, and operate large-scale distributed software services for Microsoft Entra ID. Lead system design, code reviews, testing, reliability, monitoring, security, and performance optimization. Improve automation and live-site operations while building modular, maintainable, highly available components. Collaborate across teams to deliver data-driven solutions focused on customer and partner needs.

As a Staff Software Engineer, you will lead technical strategies, develop APIs and microservices, and mentor engineers for innovation at GEICO.

Design, build, and operate scalable Python backend services, APIs, event-driven systems, integrations, and data pipelines supporting manufacturing and operations. Partner with hardware, manufacturing, quality, and operations teams to deliver reliable production systems. Lead technical design, mentor engineers, establish engineering patterns, and contribute to deployment, monitoring, observability, and continuous improvement across globally distributed teams.

Owns backend software engineering for a data platform supporting federal disability claims. Designs APIs, internal tools, shared Python libraries, and services; establishes architecture, testing, packaging, documentation, and code-quality standards. Partners with data engineers, leads reviews, resolves complex defects, mentors engineers, and supports planning. Requires substantial Python, pytest, API, software design, and mentoring experience, along with U.S. citizenship and Public Trust eligibility.

Design, develop, deploy, and support scalable SaaS services and web front ends for identity assurance and passwordless authentication products. Own features end to end, implement automated testing, participate in on-call support, research technologies, and collaborate across engineering, operations, and support teams. The role requires expertise in Java, Spring, Kubernetes, cloud development, relational and NoSQL databases, distributed systems, authentication flows, and modern frontend frameworks.

Lead infrastructure resiliency, observability, scalability, and performance initiatives for a revenue platform. Build reliable, performance-critical infrastructure, including real-time event processing, recovery mechanisms, tenant isolation, and load-spike handling. Investigate complex failures and performance issues, partner with engineering teams on reliable product features, and mentor engineers on observability, rollout strategies, and risk mitigation.

Lead backend-focused software architecture and development across distributed systems, data ingestion, experimentation platforms, AI workflows, and product capabilities. Build primarily in Python while contributing to React and TypeScript frontend work. Translate ambiguous product needs into scalable production systems, guide technical direction, partner with product and data teams, mentor engineers, and improve engineering practices.

Build and operate AI-first full-stack applications, internal tools, service connectors, automations, and data products supporting business functions. Translate operational and financial reconciliation needs into scalable software solutions, integrate business systems, improve engineering processes, and own products across the full lifecycle. The role requires production engineering experience, data warehouse and SQL expertise, and familiarity with frontier AI tooling, with opportunities to evaluate LLM systems and work with platforms such as Snowflake, dbt, and enterprise business applications.

Own performance of a real-time autonomous vehicle behavior-planning pipeline, including latency, throughput, memory usage, thread safety, profiling, optimization, concurrency, benchmarking, telemetry, and performance regression prevention. Partner with autonomy teams to design low-overhead C++ interfaces and execution guardrails.

Own and build enterprise authentication, authorization, multi-tenancy, auditability, tenant lifecycle, public APIs, SDKs, and MCP integrations. Develop secure, resilient Python/FastAPI backend services on Kubernetes and AWS, supporting regulated deployments, tenant isolation, billing, metering, and developer integrations. Partner across infrastructure, data, applications, and science teams while debugging production systems and delivering end-to-end platform improvements.

Design, develop, test, and maintain enterprise-scale healthcare software using C#, .NET, RESTful APIs, SQL Server, and modern JavaScript frameworks. Build scalable features, optimize databases, address concurrency issues, debug complex systems, contribute to architecture decisions, and support the full software development lifecycle. Collaborate with distributed cross-functional teams while helping modernize infrastructure through AWS migration, microservices, and cloud technologies.

Design, develop, and maintain high-performance Order Management System features across Java backend and JavaScript frontend components. Collaborate with product managers and engineers, participate in code reviews, mentor junior developers, optimize scalability and low latency, troubleshoot full-stack issues, and contribute to architecture, planning, and documentation.

Lead development of high-performance financial trading applications and Order Management System features across Java backends and JavaScript frontends. Responsibilities include architecture, performance optimization, troubleshooting, code reviews, mentoring, technical planning, documentation, and collaboration with product managers and engineers. The role requires full-stack engineering experience, strong testing and problem-solving skills, and knowledge of the financial trading ecosystem.

Design, develop, and lead scalable cloud-native platform services, REST APIs, and reusable microservice components. Provide technical leadership through architecture, code reviews, roadmap participation, and best-practice adoption. Build highly available distributed systems, improve performance and security, troubleshoot production issues, and promote AI-assisted software development practices. Collaborate with engineering, design, and product teams in a highly automated CI/CD environment.

Fix correctness, validation, security, application-blocking, and conformance bugs in Firefox’s WebGPU implementation. Develop and test fixes in Rust, wgpu, and Gecko; diagnose graphics and application failures; address fuzzing findings; participate in upstream code review; and land reviewed changes that reduce release backlogs for Linux and Android.

Design, build, and own production-grade full-stack software for a cloud-native lending platform. Develop C#/.NET services, Angular features, REST APIs, background services, and event-driven integrations on Azure. Apply secure coding, testing, CI/CD, EF Core optimization, and architectural best practices. Participate in design reviews, documentation, and code reviews while mentoring engineers. Use GitHub Copilot and AI agents daily to accelerate development while validating and refining generated output.

Leads full-stack software development across the Censis application stack, including design, coding, testing, deployment, production support, and defect resolution. Develops C#/.NET and Vue.js applications, REST APIs, and SQL Server solutions. Improves security, reliability, observability, and performance through automated testing, secure coding, root-cause analysis, and preventive engineering practices. Mentors developers, leads technical discussions, collaborates across Product, QA, DevOps, Security, and Support, and uses approved generative AI tools responsibly.

Senior Software/SRE Engineer responsible for building Go, Python, and TypeScript/React applications; designing architecture; reviewing code; operating Kubernetes infrastructure across AWS and GCP; managing Terraform-based infrastructure; improving CI/CD and GitOps workflows; and ensuring reliability, observability, security, and HIPAA compliance in patient-facing systems.

Lead architecture and hands-on development of Replit’s agentic commerce and payments platform. Build purchasing workflows, merchant integrations, agent-facing APIs, secure authorization, enterprise controls, provisioning, subscriptions, refunds, reconciliation, and reliable distributed transaction processes. Drive cross-team delivery, mentor engineers, and ensure agent-driven purchases are secure, auditable, idempotent, and successfully fulfilled.

The Senior Software Engineer will lead full-stack development and contribute to Freddie Mac’s digital modernization. Responsibilities include mentoring teams, guiding architecture and transformation, implementing modern Agile, TDD, ATDD, microservices, stateless design, and containerization practices, analyzing system architecture, supporting design planning, and managing delivery dependencies with vendors and internal engineering teams. The role requires collaboration with business leaders and driving enterprise-level development modernization.

Design, develop, test, implement, and support mission-critical COBOL mainframe applications. Troubleshoot application, batch, and production issues; support client migrations and product upgrades; collaborate with business and technical teams; manage deliverables across concurrent projects; facilitate cross-functional initiatives; and mentor new associates. The role is onsite Monday through Friday with rotational nights, weekends, and future on-call responsibilities.

Design and deliver secure, high-performance microservices and APIs. Develop backend services in Java and Python, integrate ML components, build front-end service layers, deploy containerized applications to cloud platforms, and collaborate in Agile teams to ensure scalable, test-driven solutions.

Leads and mentors ServiceNow software engineers delivering complex customer projects. Develops and customizes ServiceNow solutions, troubleshoots platform and CSM issues, maintains integrations and modules, collaborates with stakeholders, supports upgrades and performance initiatives, documents technical solutions, and performs deployments.

Design, develop, test, debug, and architect scalable native iOS solutions. Participate in technical design, code reviews, performance optimization, mobile best-practice adoption, and cross-functional decision-making. Collaborate on complex features, share knowledge through talks and workshops, and mentor junior developers. Contribute to enterprise mobile solution strategy and the technical direction of digital engineering projects.

Build and maintain shared JavaScript libraries, UI components, and workflow tools for Disney’s digital media supply chain. Develop business logic, review JavaScript and TypeScript code, lead technical initiatives, and apply test-driven and agile practices. Partner with product and program teams, address scalability and performance, support production incidents, and develop AI capabilities to accelerate software delivery.