Top Senior Software Engineer Jobs

Develop and maintain full-stack web applications, workflow automation, and dataflow solutions supporting intelligence operations. Collaborate with analysts, operators, developers, and customers to identify inefficiencies, deliver iterative solutions through CI/CD, gather feedback, and improve mission-support tools. The role requires Linux-based development, relational database experience, customer-facing communication, and extensive web development expertise.

Leads architecture and hands-on development for a secure bank processing platform. Builds backend services, APIs, transaction workflows, data models, integrations, validation, reconciliation, and recovery mechanisms. Establishes testing and code quality practices, troubleshoots production issues, supports deployment and monitoring, and collaborates with banking partners and internal stakeholders. Mentors a small engineering team while remaining an active contributor.

Design, develop, test, and maintain reliable software using functional programming principles. Apply strong typing, domain modeling, and abstraction to solve complex engineering problems across backend, distributed systems, financial infrastructure, blockchain, and developer tooling. Collaborate with engineers and clients, contribute to architecture and technical decisions, investigate issues, review code, communicate trade-offs, and improve engineering practices.

Design, implement, test, document, and troubleshoot software for satellite communications systems. Support the transition from waterfall development to Agile and DevOps delivery, including CI/CD pipelines, automated testing, source control, release management, and configuration control. Collaborate with development, testing, operations, systems engineering, and project management teams. Automate build and delivery tasks, maintain traceability, resolve application and release issues, and improve software reliability and delivery workflows.

Develops, tests, debugs, integrates, secures, documents, and deploys software applications and enhancements. Responsibilities include desktop design, security lockdown implementation, automated patching and deployment, integration with standard software packages, user documentation, training, resolving software issues, and addressing customer feedback. The role requires substantial professional experience with AWS, C#, or .NET and an active Top Secret/SCI eligibility clearance.

Build and operate production Web3 products across backend, frontend, and smart contracts. Develop Go and TypeScript services, React dApps, SDKs, tokenization infrastructure, smart-wallet integrations, and blockchain event processing. Own on-chain/off-chain architecture, security, testing, observability, deployments, and on-call operations. Review code and configure AI-assisted engineering tools for the repository.

Develop, test, deploy, and maintain enterprise applications and APIs supporting analytic functions. Analyze system requirements and workflows, design software solutions, automate manual processes with scripts, create testing strategies, improve brownfield applications, and recommend operational enhancements. Collaborate with stakeholders and multidisciplinary Agile teams, communicate technical issues and recommendations, and deliver solutions within project timelines.

Develop and maintain C#/.NET software for electric and gas distribution engineering tools. Implement features, fixes, integrations, tests, and CI/CD automation while configuring enterprise systems for customer needs. Collaborate in Scrum, participate in reviews, reduce technical debt, document processes, and mentor teammates. The role may involve GIS or Enterprise Asset Management integrations and requires strong software development experience in utility or energy infrastructure environments.

Build and own mobile SDKs for identity and fraud prevention products, focusing on Android development, device-level signal collection, authentication, and emerging agentic identity use cases. Partner with product and engineering leaders on architecture and roadmap decisions, improve observability and production resilience, mentor engineers, and drive technical initiatives across Twilio and Stytch.

Design, develop, test, deploy, and support mission-critical distributed systems using Java, Scala, and C/C++. Maintain interfaces, CI/CD automation, databases, documentation, and production services. Troubleshoot failures across distributed environments, participate in on-call support, collaborate with infrastructure and network teams, and follow configuration management and change-control practices. The role requires an active TS/SCI clearance and may involve domestic or international travel.

Lead organization-wide technical initiatives for Gusto’s API and AI agent platform. Design reliable, scalable API contracts and agent-facing tools, write clean Ruby on Rails code, mentor engineers, improve reliability and observability, engage developer customers, and troubleshoot production issues.

Lead design and development of the digital twin and simulation software stack. Mentor engineers, define processes and standards, drive architecture and CI/CD, translate business requirements to implementations, collaborate with robotics and cross-functional teams, and guide hiring and agile practices.

Build and maintain infrastructure tooling for thousands of servers and distributed services. Responsibilities include host provisioning, configuration management, rapid code deployment, service monitoring, automated testing, linting, and infrastructure supporting high-volume real-time data pipelines. The role involves end-to-end project ownership, frequent code delivery, debugging complex distributed systems, and collaboration within a high-performing engineering team.

Leads development of secure, scalable software solutions for network automation. Designs, codes, tests, debugs, and reviews production systems using Python, React, Django, and FastAPI. Promotes AI-assisted engineering practices with strong validation, security, and responsible-use standards. Builds microservices, APIs, and event-driven solutions; improves application resiliency and automation. Partners with internal teams, vendors, and startups to evaluate architectures and deliver sustainable technical outcomes in an agile environment.

Designs and develops scalable software solutions while providing production support, incident management, batch operations, monitoring, and data-quality improvements. Leads AI-assisted engineering adoption, automation, release management, and SDLC activities. Builds and supports Cassandra, Databricks, AWS, Snowflake, APIs, and data-processing solutions. Collaborates with QA and development teams on performance, ingestion, cloud migration, and throughput testing, while participating in weekend and late-shift support rotations.

Leads full-stack software engineering for secure, scalable corporate technology systems. Designs distributed, event-driven microservices using Java, Spring Boot, Kafka, MongoDB, and CQRS/Saga patterns; builds React and TypeScript applications; reviews code; improves operational stability; and guides architecture, testing, security, and AI-assisted engineering practices. Collaborates with vendors and internal teams while leading technical communities and promoting agile delivery.

Leads software engineering for secure, scalable financial technology applications. Designs distributed systems using event-driven pipelines, CQRS, and real-time streaming; develops and reviews React UI code; improves automation, testing, resiliency, and operational stability; collaborates with UX, product, backend, vendors, and internal teams; and guides responsible adoption of AI-assisted engineering practices.

Leads customer-centric software development from discovery through production adoption. Partners with customers, product, and design to identify needs, form hypotheses, prototype solutions, and ship AI-native products. Owns architecture, instrumentation, telemetry, and end-to-end outcomes while setting engineering standards, mentoring engineers, and guiding practical technical decisions. Requires cloud production experience, incremental delivery from proof of concept to production, strong communication, and experience leading engineers on complex projects.

Design, architect, and implement large-scale, reliable, and secure software systems for Customer Information Management. Partner with product and architecture teams, ensure code quality, CI/CD, testing, and observability, drive operational resilience, mentor engineers, and influence cross-team technical direction.

Develop real-time embedded software for electronic defense systems, collaborating with systems, hardware, and test engineers across the software development lifecycle. Responsibilities include software development in Linux, C/C++ and Python programming, integration testing, Agile development, CI/CD, and potentially kernel, driver, containerization, and automated unit testing work. The role supports aircraft protection, radar warning, and electronic attack products.

Own the architecture and delivery of scalable backend systems supporting growth across acquisition, activation, conversion, retention, and expansion. Design distributed systems, experimentation platforms, event-driven architectures, and data pipelines. Build intelligent decision systems and personalized journeys using customer and product signals. Lead ambiguous cross-functional initiatives, improve reliability and observability, mentor engineers, and uphold secure, compliant engineering standards.

Design and build foundational web services, service mesh infrastructure, developer tooling, CI/CD automation, and highly reliable distributed systems. Architect scalable APIs and data consistency patterns, optimize high-throughput systems, establish observability and reliability practices, and mentor engineers. The role supports millions of transactions across mobility products and requires collaboration across application, infrastructure, and advanced technology teams.

Leads development of secure, scalable, low-latency C++ software for an eTrading technology team. Provides technical direction, designs and reviews production code, resolves complex engineering problems, and influences application functionality and technical processes. Promotes software development lifecycle best practices and responsible use of AI-assisted engineering tools, including code review, testing, troubleshooting, and automation. Requires strong cloud-native experience, advanced C and C++ skills, and 10+ years of applied software engineering experience.

Develop and support scalable full-stack software using Java, Spring Boot, React or Angular, Python, APIs, microservices, and cloud technologies. Lead architecture, AI-enabled capabilities, testing, troubleshooting, observability, automation, and performance improvements. Mentor engineers, conduct code reviews, influence technical direction, and independently deliver complex solutions across the software lifecycle.

Designs, develops, tests, deploys, and supports full-stack applications, APIs, and microservices using Java, Spring Boot, React, cloud platforms, and distributed systems. The role contributes to architecture, automated testing, CI/CD, observability, production troubleshooting, performance optimization, and operational readiness. It partners with Product, UX, Security, Architecture, and Engineering teams while delivering reliable enterprise solutions and promoting technical excellence.