Top Senior Software Engineer Jobs

Develop scalable backend services and APIs, create coding tasks and deterministic verifiers for AI systems, debug complex codebases, optimize performance, refactor legacy systems, implement features, and provide technical reviews and reasoning. The role is remote, contract-based, and part-time at 15–20 hours per week.

Develop LLM-powered automation and agent tooling for legacy code analysis and modernization. Build cloud-native migration services, scalable Spark and Databricks data platforms, ETL frameworks, data models, validation controls, and Airflow-orchestrated workflows. Reverse-engineer mainframe and database workloads, transform legacy logic into microservices, optimize MongoDB schemas, and implement near-real-time data synchronization. Requires extensive data engineering, cloud, Python, and AI framework experience.

Designs and leads enterprise backend systems, streaming services, distributed architectures, APIs, databases, Kubernetes deployments, and DevOps automation. The role also contributes to full-stack delivery, product ownership, technical prototyping, client presentations, and end-to-end application delivery while coordinating onshore and offshore teams.

Lead development and maintenance of internal design system libraries, tools, and Figma plugins. Implement AI solutions to speed design workflows, own medium-to-large features end-to-end, run internal user research, provide support and on-call coverage, conduct design and code reviews, and collaborate with designers and engineers to drive technical strategy and adoption.

Lead the architecture, development, testing, and maintenance of scalable backend systems and APIs. Drive technical decisions, code quality, performance optimization, documentation, continuous delivery, and monitoring. Collaborate with product, design, and engineering teams to translate requirements into reliable solutions. Mentor junior engineers, conduct code reviews, resolve complex technical issues, and contribute to agile development and overall technology strategy.

Senior Software Engineer supporting a U.S. Government customer by sustaining critical mission-related software and systems. The role requires extensive software engineering experience, strong communication, teamwork, and independent work. Candidates must hold an active or reinstatable TS/SCI with Polygraph clearance and U.S. citizenship. Key technologies include Hadoop, Accumulo, AWS, Terraform, Java, and Python. The position is based in Annapolis Junction, Maryland, with limited telework available after acclimation and training.

Develop and sustain mission-critical government software and systems as a senior Python engineer. Apply Python and related technologies including Kotlin/Java, Terraform, Elasticsearch, OpenSearch, and AWS. Work independently and collaboratively on software engineering projects, support customer mission needs, and contribute to reliable solutions using Agile development practices. The position requires a TS/SCI with Polygraph clearance and supports partial telework after acclimation and training.

Build and operate large-scale financial systems, distributed data platforms, and pipelines for Stripe. Responsibilities include translating fintech requirements into scalable software, leading multi-team technical projects, debugging production issues, analyzing complex datasets, supporting payment infrastructure, and improving data pipeline reliability through monitoring and automation.

Design, build, and maintain highly available application platforms with strong observability and reliability practices. Responsibilities include defining SLIs and SLOs, managing error budgets, improving alert quality, automating operational processes, reviewing architectures, and supporting incident response. The role also develops AI-assisted reliability tools using LLMs and machine learning for anomaly detection, root-cause analysis, and alert triage. It requires collaboration across engineering, operations, and product teams, along with technical knowledge sharing and leadership communication.

Design and develop high-performance optimization and scheduling systems for complex network-resource allocation problems. Translate network requirements into computational models, improve solution quality and scalability, and evolve solver architecture for reliability. Responsibilities include managing project priorities, designing, testing, debugging, and maintaining production software. Preferred experience includes numerical optimization, solver development, performance profiling, distributed or cloud computing, and telecommunications or networking.

We are looking for a Senior .NET Software Engineer to take ownership of features and drive architectural decisions while building AI-powered EMR software.

Lead architecture and development of Python-based software for scientific analysis, visualization, data pipelines, machine learning, and internal workflows. Collaborate with researchers and engineers to deliver scalable production systems, integrate HPC and legacy C++ or Fortran code, optimize parallel and GPU-enabled workloads, and establish testing, documentation, CI/CD, and containerization practices. Mentor engineers and provide technical direction across research and experimental software projects.

Develop and maintain innovative cloud-based web and mobile applications using full-stack technologies. Responsibilities include designing RESTful APIs, working with databases and cloud platforms, implementing authentication and authorization, supporting CI/CD and containerization, troubleshooting issues, translating business requirements into technical tasks, mentoring engineers, and contributing within Agile development processes.

Develop and evolve distributed spacecraft ground-control systems using Elixir and OTP. Own features from design through production, establish fault-tolerant architecture, improve reliability and performance, maintain rigorous testing and code quality, mentor engineers, and collaborate across product, frontend, backend, operations, and astrodynamics teams. The role focuses on resilient, scalable services supporting satellite command and control, mission planning, data processing, and analysis.

Own end-to-end full-stack feature development across React/TypeScript interfaces and Elixir backend services for spacecraft modeling, simulation, and ground-control software. Drive architecture, technical debt reduction, performance, reliability, testing, API design, and production deployment. Mentor engineers, establish coding standards, collaborate with product, design, QA, operators, and astrodynamics teams, and deliver complex data-dense, real-time applications.

Leads software architecture and development for ASML machine applications, owning complex modules from design through integration, deployment, testing, and maintenance. Provides technical direction to 6–10 engineers through code reviews, architecture reviews, mentoring, and technical planning. Develops C#/.NET applications using WPF, XAML, and MVVM, while driving quality, performance, reliability, automated testing, CI/CD, dependency management, and cross-team architectural alignment.

Provides technical leadership for designing, developing, modernizing, testing, and supporting enterprise applications. Leads full-stack Java, Spring Boot, Angular, and React engineering; architecture and code reviews; database and API design; automated testing; CI/CD and DevSecOps practices; production incident troubleshooting; observability; and root-cause analysis. Mentors engineers and collaborates across architecture, product, UX, QA, DevOps, database, and operations teams.

Design, build, and improve distributed clearing and securities-finance systems supporting brokerage products. Own projects from ideation through deployment, develop reliable APIs and integrations, refine existing infrastructure, and participate in on-call operations. The role requires strong systems fundamentals, attention to detail, financial-markets interest, and ownership of production systems handling customers’ money.

Design and maintain high-performance real-time dashboards, HMI/SCADA interfaces, streaming UIs, and post-processing tools for high-throughput sensor telemetry. Define visualization architecture, rendering standards, testing practices, and operational best practices. Collaborate with data platform, controls, and test automation teams while debugging and optimizing the full rendering-to-data stack in safety-critical, 24/7 environments.

Seeking a Senior Software Engineer to design and maintain robust billing systems for high-traffic events, collaborating on high-performance solutions. Responsibilities include architectural design, solution implementation, and writing scalable code using modern technologies.

Develop and improve high-performance software agents for Linux, Unix, and Windows across multiple processor architectures. Design systems that collect workload information, enforce network policies, and monitor container deployments. Analyze interactions among applications, processes, and operating system kernels; troubleshoot complex systems; and participate throughout the product lifecycle from design and prototyping through production deployment. Collaborate with software, data, UX/UI, and support teams in an agile environment.

Designs and develops scalable software frameworks, automation tools, and full-stack applications using Python, Bash, React, and Flask. Implements ISO 26262 safety requirements, optimizes databases, performs static analysis and code reviews, and leads Agile delivery. Provides technical mentorship, collaborates with stakeholders on certification requirements, and creates architecture and API documentation. Deploys applications using cloud platforms, Podman, OpenShift, and infrastructure-as-code tools.

Lead complex enterprise analytics software from specification through production deployment. Design resilient distributed services, implement major epics, author engineering specifications, drive testing and production readiness, and mentor product engineers. Collaborate with product, architecture, QA, engineering, and AI agents in Agile Scrum teams using SAFe 6.0 principles to build secure, observable, cloud-agnostic software for critical electrical infrastructure.

Develops and maintains software solutions by translating business requirements into technical designs and code. Responsibilities include end-to-end development, unit and integration testing, debugging, code reviews, source control, sprint planning, solution design, technical debt prioritization, QA issue resolution, and automation. Collaborates with Scrum Masters, Product Owners, and developers while supporting continuous integration and delivery. May contribute to project planning and mentor newer developers.

Design and maintain scalable services, APIs, distributed systems, and data pipelines for AI training data infrastructure. Own systems through design, implementation, testing, deployment, and monitoring. Lead architectural decisions, improve reliability and scalability, mentor engineers, and collaborate with AI/ML, product, and data operations teams. Contribute to CI/CD, containerization, DevOps, and cloud deployment practices.