Top Senior Software Engineer Jobs in Baltimore, MD

Design, develop, test, and maintain PKI software across Red Hat Certificate System and Dogtag. Integrate PQC algorithms, HSMs, and ACME automation; collaborate with product engineering and government teams; own issues end-to-end and contribute to CI/CD, testing, and release quality while communicating status to stakeholders.

Develops and executes software evaluation, functional, regression, integration, validation, and compliance tests. Creates test plans, procedures, automation, traceability matrices, and technical documentation; conducts data collection and analysis; reports results; verifies software discrepancies and fixes; and mentors test engineers. The role requires Java development expertise, testing frameworks, CI/CD tools, cloud deployment, security technologies, and SIGINT, IA, or IT domain experience.

Develop and support mission-critical security applications across multiple technology stacks. Responsibilities include maintaining applications using Angular, Vue, Node.js, and Java; designing enterprise solutions; coding, testing, troubleshooting, and optimizing cloud-deployed applications; mentoring junior developers; participating in Agile development; managing Git-based code collaboration; and supporting secure, compliant application delivery throughout the software development lifecycle.

The Software Engineer 2 role involves designing, developing, and enhancing complex back-end systems, focusing on Hadoop and microservices, while collaborating with a small team to support mission-critical applications.

Integrate, install, configure, upgrade, compile, and support COTS/GOTS software across heterogeneous HPC servers, clusters, operating systems, and specialized processing environments. Responsibilities include Linux shell scripting, Python programming, configuration management, system installation, scheduler and resource-management software support, parallel processing, compiler and multithreaded software work, and structured troubleshooting. The role requires a technical bachelor’s degree or equivalent experience, DoD 8570 IAT II certification, and an active TS/SCI clearance with polygraph.

The Senior SRE Engineer will design, build, and maintain resilient infrastructure systems, manage infrastructure-as-code, and write tooling in various languages.

Responsible for designing and implementing authentication features in Go and TypeScript, enhancing Auth architecture, and collaborating with teams to improve user experience.

Develop, maintain, and enhance enterprise software systems and SPLUNK integrations. Analyze data sources, design and implement back-end and front-end components, build RESTful services, deploy to Tomcat, lead small teams, execute testing, and collaborate with systems and hardware engineers to meet performance and security requirements.

Design, build, and operate multi-tenant elastic storage control-plane services. Ensure high availability and performance, run observability and on-call practices, lead complex projects, collaborate cross-functionally, mentor junior engineers, and contribute to scaling services handling petabytes of data.

As a Senior Software Engineer, you'll own backend systems, mentor team members, and collaborate with product and design to build user-focused solutions.

Lead technical strategy and architecture for Coinbase's Blockchain Platform, overseeing nodes, indexers, wallets, and asset lifecycle. Drive cross-team platform rearchitectures, enforce security and reliability standards, champion AI-driven automation, use observability to improve reliability, and represent the platform to executives to secure alignment and resources for large-scale blockchain infrastructure initiatives.

Define and drive Payments technical strategy and architecture for rails, routing, and funds-flow systems. Lead large cross-team initiatives, ensure financial correctness, improve reliability and cost via observability, mentor senior engineers, and align stakeholders across product, risk, and regulatory teams.

Design, build, and operate low-latency authentication and authorization services (OAuth, sessions, tokens, 2FA, account recovery). Lead technical designs, ensure strong security and observability, collaborate cross-functionally, simplify integrations, and mentor engineers while running production services with measurable SLOs.

Lead hands-on full-stack development for Ruby on Rails, TypeScript, and React applications. Shape technical direction, design reliable APIs and data flows, optimize relational database performance, and deliver responsive front-end experiences. Lead projects end to end, mentor engineers, review and refactor code, collaborate cross-functionally, and explore AI-assisted engineering and LLM automation while protecting sensitive healthcare data.

Lead design and implementation of Headway's insurance systems (eligibility, pricing, matching, claims). Build data-intensive, ML-powered platforms and automation, mentor engineers, write high-impact code, and improve accuracy and reliability across state and payer complexity to scale insurance-covered therapy.

Lead end-to-end feature development across frontend and backend for an enterprise data analytics platform. Design, implement, and maintain React UIs, backend services, APIs, databases, and distributed systems. Collaborate with Product, UX, and Engineering, mentor engineers, improve quality through testing/CI, and introduce new technologies including AI-assisted development.

Build and maintain on-chain smart contracts and backend services for branded USDC-backed stablecoins. Own issuance, reserves, mint/burn, and rewards systems; drive architecture, security, and operational excellence; ship features with product and design partners and ensure well-tested, auditable production deployments.

Design, develop, and enhance software solutions based on user requirements, improving performance and collaborating with users to analyze workflows.

The Software Engineer will develop and maintain software systems, focusing on full-stack development and ETL processes, while ensuring adherence to design requirements and resolving issues.

The Software Engineer will develop and maintain complex software systems, provide full-stack development, and support data transformation solutions for federal clients, ensuring adherence to design specifications and quality standards.

Develop and deploy web-based visualization components, provide full lifecycle support, and collaborate with teams to solve complex technical challenges.

Own quality engineering for high-throughput payment systems by architecting automated regression, performance, stress, and load testing. Build emulators for external payment systems, integrate quality gates into CI/CD pipelines, validate microservices, event-driven architectures, and databases, and use Prometheus and Grafana for observability. Apply AI-assisted testing, synthetic data generation, and edge-case analysis while mentoring engineers and preventing incidents through telemetry-driven testing and post-mortems.

Build and maintain reliable, secure, scalable backend systems for Lithic’s product platform. Own projects end to end across API key management, reliability, audit logging, search, and API infrastructure. Improve system reliability, reduce technical debt, participate in on-call rotations, and lead team process improvements while collaborating asynchronously across time zones.

Build and operate highly scalable storage infrastructure supporting petabyte-scale imagery data. Responsibilities include developing backend services and APIs, managing object storage and metadata indexing, tuning Elasticsearch, improving disaster recovery, monitoring performance, responding to incidents, contributing to architecture and roadmaps, and advising engineers. The role requires strong production software engineering experience with Go or Python, cloud-native systems, relational and non-relational databases, and highly available services.

Lead technical strategy and architecture for Affirm Bank's cloud, data, vendor integrations, and operational tooling. Design, build, and operate high-stakes systems end-to-end, own incident response, vendor selection, and the Bank↔Affirm Inc integration boundary. Ensure examiner-ready documentation, compliance, reliability, and observability while mentoring engineers and pushing AI-assisted engineering practices to increase velocity and product safety.