Top Senior Software Engineer Jobs in Baltimore, MD

Develop and deploy mission-critical software within a SAFe Agile and DevOps environment. Responsibilities include architecting server-side Java business logic, developing user interfaces, applying TDD and automation, integrating databases and application servers, and supporting secure systems engineering. The role requires collaboration, requirements decomposition, testing, continuous integration, and independent task prioritization while working with technologies including Java, Python, C/C++, SQL, Linux, Windows, and enterprise testing tools.

Own QA strategy and release quality for POS, back-office, and payments products. Build automated unit, integration, API, contract, and end-to-end tests; integrate testing into GitHub Actions; validate hardware, offline modes, payment flows, and upgrades; establish release gates and test environments; monitor quality metrics; reproduce merchant issues; and coach engineers on testable design and quality practices.

Develop, test, deploy, and maintain full-stack applications, automation, integrations, dashboards, and data-driven tools for a federal government client. Collaborate with stakeholders and senior developers to gather requirements, rapidly build solutions, and refine them through user feedback. Work in Agile sprints, support production systems, document code, and troubleshoot issues. The role requires Python, JavaScript, SQL, Google Apps Script, database, API, front-end, and back-end development experience.

Develops, maintains, tests, debugs, and enhances complex software systems, including analytics, algorithms, large-data processing, real-time systems, and business applications. Analyzes requirements, designs and codes software, integrates systems, develops database queries, resolves defects, evaluates hardware/software trade-offs, and recommends improvements to documentation and development standards. The role requires Java, AWS, backend development, and TS/SCI clearance with polygraph.

Develop, maintain, enhance, test, integrate, and troubleshoot scalable Java applications using Spring technologies. Work with Linux, scripting, SQL and NoSQL databases, containers, Kubernetes, Helm, messaging systems, CI/CD, infrastructure automation, and Git. Collaborate cross-functionally to ensure reliability, performance, security, and integration across complex mission-focused environments.

Develops software for high-performance computing, large-scale data analytics, and advanced information technology programs. The role requires seven years of software engineering experience on programs of similar scope, type, and complexity, plus a bachelor’s degree in computer science or a related discipline, or equivalent additional experience. An active TS/SCI clearance with polygraph is mandatory.

Develops, sustains, tests, integrates, and troubleshoots software applications and services. The role uses Java and Spring technologies, Linux, scripting, SQL and NoSQL databases, containers, Kubernetes, Helm, messaging frameworks, CI/CD tools, infrastructure-as-code, and Git. Requires an active TS/SCI clearance with polygraph and substantial software engineering experience supporting programs of comparable scope and complexity.

Build and architect Clear Street Active, 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 teams on large-scale initiatives while emphasizing scalability, performance, API quality, maintainability, and developer experience.

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.

Develops and maintains C++ and Java signal-processing software for RF systems. Responsibilities include designing algorithms, analyzing requirements, debugging and integrating software, implementing digital modulation and demodulation techniques, performing testing and quality control, documenting solutions, and leading software development teams. Requires advanced Linux knowledge, expertise in digital signal processing and communications theory, and the ability to work with complex timing, resource, and interface constraints.

Develop and sustain a production React application supporting DoD and industry information exchange. Responsibilities include building front-end enhancements, troubleshooting production issues, integrating APIs, improving usability and performance, translating stakeholder requirements, supporting Agile planning and releases, and maintaining reliable business-process workflows. The role requires collaboration with government stakeholders, engineers, testers, and product teams while balancing operational support with enhancement development.

Design, build, and operate enterprise applications, APIs, integrations, and distributed event-driven systems using C#/.NET, React, cloud platforms, and messaging technologies. Integrate business systems, implement resilient architectural patterns, add AI capabilities, and support CI/CD, observability, security, and production troubleshooting. Collaborate with stakeholders and engineers, contribute to technical standards, lead projects when needed, and deliver reliable solutions across engineering, manufacturing, supply chain, and finance functions.

Develop, sustain, test, integrate, and troubleshoot mission-critical software applications. The role requires Java and Spring development, Linux and Bash/Python scripting, SQL and NoSQL databases, containerization, Kubernetes orchestration, Helm deployments, messaging frameworks, CI/CD, infrastructure as code, and Git. The engineer will work onsite on government projects and must hold or obtain a TS/SCI clearance with polygraph.

As a Senior Software Developer, you'll design, develop, and implement software solutions, collaborate with cross-functional teams, and tackle complex problems while adhering to agile methods.

As a Full Stack Software Engineer, you will develop software solutions, enhance systems, and tackle client challenges with advanced tools and architectures.

Develop and maintain embedded software, reverse engineer binaries and firmware, create analysis tools and plugins, and troubleshoot hardware-supported systems. Use AI- and LLM-powered developer tools to automate reverse engineering workflows. Collaborate with cybersecurity specialists to ensure secure software. The role requires low-level software knowledge, experience with IDA Pro or Ghidra, TS/SCI clearance with polygraph, and extensive software engineering experience.

Develop end-to-end full-stack software solutions from concept through production in an agile environment. Design, modify, implement, and enhance applications using front-end and back-end technologies, primarily Java and JavaScript on Linux. Collaborate cross-functionally to solve complex problems, improve system architecture, and support current and future functionality. Preferred technologies include MongoDB, Spring, OSGi, Perl, Python, Lua, and NGINX.

As a Lead Software Engineer, you will develop end-to-end solutions, improve systems, and assist clients with complex challenges using advanced tools and architectural approaches.

Leads delivery of complex software features for desktop utility design tools, translating ambiguous requirements into technical plans and managing performance, correctness, and reliability. Establishes architecture, coding standards, CI/CD and AI-assisted development practices; mentors engineers and leads design and code reviews. Partners with product, QA, delivery, and customers to create reusable solutions, contribute to roadmaps, and represent the team in architecture discussions.

Designs, develops, tests, troubleshoots, and implements complex Java software capabilities. Builds enterprise APIs, RESTful services, and microservices while using modern frameworks, configuration management, Linux, and Agile practices. Integrates AI coding agents for feature development, refactoring, testing, and code review across complex repositories. Collaborates with engineering teams in a hybrid Columbia, Maryland or Fort Meade environment and maintains awareness of emerging technologies.

Designs, develops, integrates, tests, deploys, and maintains cloud-native applications and AWS infrastructure. Builds CI/CD pipelines, Infrastructure as Code solutions, and containerized deployments using Terraform, CloudFormation, Docker, and Kubernetes. Supports cloud modernization, monitoring, observability, security, troubleshooting, scalability, resiliency, and high availability while collaborating with software, systems, and cloud engineering teams in Agile environments.

Build Apollo’s AI-powered Builder Studio end to end, including chat-driven app creation, live previews, generated-app runtimes, workflows, integrations, delegated permissions, security, and reliability. The role requires strong full-stack development, production LLM experience, frontend expertise with complex UIs, backend and workflow design, and ownership of an ambiguous 0-to-1 product.

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.

Build and maintain authentication and fine-grained authorization systems using Auth0 and OpenFGA. Own OAuth 2.0 and OpenID Connect implementations, identity federation, token flows, and permissions for AI agents. Lead cross-team technical projects, set engineering standards, review code, and mentor engineers. The role requires strong backend development skills and experience with identity providers, ReBAC systems, and complex multi-tenant authorization models.

Develop and scale backend Java and Kotlin software powering patch discovery, packaging, and deployment across millions of endpoints. Design scalable systems, APIs, data structures, caching solutions, and relational databases while maintaining high testing and code-quality standards. Collaborate with AI workflow, server, platform, design, and product teams. Occasional React or Angular work may support patching workflows and dashboards.