Top Senior Software Engineer Jobs in Baltimore, MD

Architect and build a high-performance trading platform for active traders. Develop responsive web interfaces integrating real-time market data, low-latency execution workflows, and advanced trading tools. Collaborate with cross-functional engineering teams on large-scale initiatives, emphasizing scalability, performance, API quality, maintainability, developer experience, and end-user usability.

Leads performance engineering across the organization by designing load-testing and data-generation frameworks, defining benchmarks and standards, analyzing application, database, and system behavior, and guiding teams in performance optimization. Builds reusable tooling and best practices using k6, JavaScript, Grafana, and InfluxDB while addressing scalability, latency, throughput, and reliability challenges in distributed cloud-native systems.

Develop and deploy customer-focused web, mobile, and backend applications across the full software stack. Design major features, contribute to architecture decisions, conduct code reviews, and ensure secure, high-quality implementations. Collaborate with stakeholders and cross-functional teams using Agile and SDLC practices. Manage version control, CI/CD, environments, and releases; maintain automated test coverage and perform root-cause analysis. Build and optimize relational data solutions using SQL Server, including complex queries, stored procedures, and performance tuning.

Design, build, deploy, and support scalable Java microservices on AWS. Provide technical leadership, architectural direction, code reviews, troubleshooting, proof-of-concept development, and cross-functional collaboration. Work with high-throughput data, messaging systems, distributed architectures, observability, and AI-assisted development tools. Participate in on-call support, mentor engineers, lead architectural initiatives, and deliver reliable SaaS platform features.

Develop, maintain, and enhance complex software systems involving large-scale analytics, real-time processing, RF signal processing, visualization, and data discovery. Integrate software across hardware platforms, review and test components, resolve software issues, and contribute to system design, requirements analysis, and hardware/software trade-offs. The role requires extensive software engineering experience, Linux development proficiency, programming skills, and an active TS/SCI clearance with polygraph.

Own the development and maintenance of large-scale React Native applications for iOS and Android. Lead architecture improvements, React Native upgrades, native module development, performance optimization, automated testing, CI/CD reliability, and production debugging. Collaborate with cross-functional product pods, contribute to technical discovery and architecture, mentor engineers, and raise engineering standards while delivering scalable, maintainable mobile experiences.

Performs functional, regression, UI, accessibility, cross-browser, manual, automation, and API testing for modernized government web applications. Validates cybersecurity controls, data protection, Section 508/WCAG compliance, and enterprise applications in cloud and Windows Server environments. Integrates automated tests with GitLab CI/CD, manages defects, documents quality metrics, and collaborates with development and security teams in an Agile, regulated environment.

Designs and improves CI/CD pipelines, automates manual software delivery processes, manages development and testing tools, optimizes Windows and Linux infrastructure, and supports virtualized and containerized deployments. The engineer ensures security and compliance, collaborates with agile teams, and independently delivers reliable enterprise systems supporting national security missions.

Design, build, and operate foundational developer infrastructure across CI, build systems, deployment orchestration, and test platforms. Improve build speed, deployment safety, and test reliability while owning services end to end, including SLOs, observability, and on-call responsibilities. Partner with engineering teams to address platform pain points and lead cross-cutting technical projects through production.

Develop, integrate, test, maintain, and enhance mission-critical cloud software in a highly secure environment. Analyze requirements, troubleshoot defects and integration issues, evaluate performance, document technical work, and collaborate with software, systems, and test engineers throughout the software development lifecycle. Support cloud-based development and deployment activities while meeting complex customer and mission requirements.

Develop and sustain Java-based software for large-scale distributed computing environments supporting the Intelligence Community. Responsibilities include full Agile lifecycle participation, software integration and testing, CI/CD and Infrastructure as Code deployments, containerized microservices development, Linux operations, troubleshooting, performance optimization, on-call support, and mentoring junior developers. The role requires an active Top Secret/SCI clearance with NSA Full Scope Polygraph.

Develops, tests, troubleshoots, and maintains scalable software applications across front-end, back-end, or full-stack environments. The role includes requirements analysis, architecture planning, issue diagnosis, on-call support, stakeholder communication, mentoring junior engineers, recruiting support, and improving engineering practices. Preferred experience includes modern web frameworks, APIs, databases, cloud platforms, CI/CD, Agile development, accessibility, security, and performance optimization.

Develop and maintain full-stack web applications supporting Intelligence Community collection initiatives and signal analysis workflows. Responsibilities span software design, Java and MERN-stack development, testing, documentation, deployment, troubleshooting, customer collaboration, and ongoing application maintenance. The role requires working in Linux environments, applying unit testing and test-driven development, using Git, and supporting reliable, high-performance products. An active TS/SCI clearance with polygraph and cloud certification are required.

Develop and sustain cloud-based software on large-scale compute clusters and AWS infrastructure. Responsibilities include requirements analysis, architecture, Java development for distributed systems, testing, integration, performance tuning, CI/CD, monitoring, and operations. The role requires LLM and RAG expertise, infrastructure-as-code, microservices, Kubernetes, Linux, and scripting knowledge. The engineer will independently solve complex problems, balance cost and resilience, and guide junior team members.

Designs, develops, tests, deploys, maintains, and enhances backend software solutions. Analyzes requirements, derives software and performance specifications, conducts code reviews, and evaluates complex technical problems. Uses Java, C++, and/or Python, relational databases such as PostgreSQL, Git, Jira, and Confluence. Requires an active TS/SCI clearance with polygraph, 20 years of relevant software engineering experience, and a bachelor’s degree or equivalent experience.

Build and support backend services and production data pipelines for cyber platforms. Design data ingestion, modeling, transformation, validation, storage, and recovery systems. Develop Python testing frameworks, reusable tooling, test environments, CI/CD checks, diagnostics, and documentation. Collaborate with operators and engineers to clarify requirements, make technical decisions, deliver production software, and establish scalable testing practices.

Establish and own a quality engineering strategy for a production cyber software platform. Build Python-based testing frameworks and tooling, determine effective unit, integration, and end-to-end test coverage, integrate automated checks into CI/CD, create reproducible environments and test data, diagnose failures, report quality gaps, and promote reusable testing practices through documentation and code reviews.

Designs, develops, integrates, tests, and sustains cloud-native software and distributed computing applications. Responsibilities include containerization, API development, database and data repository interfaces, MapReduce analytics, cloud infrastructure automation, debugging, performance optimization, documentation, testing, and CI/CD implementation. The role also provides container deployment training and applies cloud technologies such as orchestration, monitoring, serverless computing, and data integration pipelines.

Lead development of scalable Java backend applications and high-availability cloud services. Design architectures, REST APIs, databases, caching systems, and distributed session infrastructure. Mentor engineers, drive technical initiatives, address performance and scalability challenges, and uphold quality and automation practices for endpoint management products.

Lead backend engineering strategy for Affirm’s international Identity team. Design and launch highly available distributed systems supporting KYC, user lifecycle management, and identity decisioning. Drive technical planning, cross-functional collaboration, operational excellence, monitoring, testing, and on-call readiness. Establish engineering quality standards, influence architecture, mentor team members, and deliver scalable systems using Python or Kotlin, AWS, MySQL, Spark, and Kubernetes.

Senior Software Engineer responsible for designing, developing, testing, and releasing scalable full-stack features for Huntress’s Core Platform. The role owns complex projects end to end across frontend, backend, databases, and infrastructure; promotes code quality through testing, reviews, and pairing; breaks down epics into milestones; contributes technical solutions; and mentors engineers. The position requires extensive Ruby on Rails and full-stack experience, plus familiarity with Linux infrastructure, databases, external APIs, Agile practices, and responsible AI-assisted development.

Develop and sustain mission-critical software and systems for a U.S. Government customer. Responsibilities include software engineering, Java development, requirements gathering, documentation, workflow management, testing, troubleshooting, and collaborative problem solving. The role may involve AWS, Maven, Git, GitLab, MapReduce, Linux, Python, streaming technologies, and Agile development practices. Work is performed independently and as part of a team while supporting critical government missions.

Develop and sustain mission-critical government software and systems using Java, Python, and AWS. Implement functional and system-level automated tests, prototype cloud-based solutions, and collaborate with systems engineers within an Agile development process. The role requires U.S. citizenship and an active or reinstatable TS/SCI with Polygraph clearance.

Develop and sustain mission-critical software and systems for a U.S. Government customer. Apply Python and related technologies including Kotlin/Java, Terraform, Elasticsearch/OpenSearch, and AWS. Collaborate independently and within engineering teams while supporting reliable software solutions, Agile development, and mission-focused technical initiatives. The role requires a TS/SCI with Polygraph clearance and is based in Annapolis Junction with partial telework available after acclimation and training.

Develop and sustain mission-critical software for a U.S. Government customer using Python, PySpark, and AWS services including Lambda, Glue, and DynamoDB. The role requires software engineering experience, collaboration, strong communication, and an active or reinstatable TS/SCI clearance with polygraph. The position is based in Annapolis Junction, Maryland, with partial telework potentially available after acclimation and training.