Top Senior Software Engineer Jobs in Baltimore, MD

Develop and debug production-grade full-stack applications across front-end and back-end systems. Build features, APIs, databases, and data models; troubleshoot end-to-end issues; analyze unfamiliar codebases; translate implementations across programming languages; and review AI-generated and developer-written code for correctness, security, scalability, performance, and maintainability.

Lead technical execution and architecture for the Loyalty product. Own roadmap, design distributed services and APIs, ensure reliability/observability, integrate with ZMP and AthenaOS, build and coach engineering teams, and drive cross-team delivery of scalable multi-tenant loyalty capabilities.

Own and deliver backend lakehouse infrastructure goals, lead engineers through complex problems, and build highly available distributed data systems. Collaborate with product, design, analytics, and engineering stakeholders; define scalable technical solutions; improve code quality and engineering standards; monitor operational health; support on-call responsibilities; and mentor team members.

Develop and maintain analytic software supporting mission operations and world events. Responsibilities include software development, integration, testing, troubleshooting, enhancement, and maintenance, with an on-call rotation. The role uses Java, Python, DevOps tools, streaming data frameworks, databases, testing frameworks, and cloud technologies. An active TS/SCI clearance with current polygraph, eight years of software engineering experience, a technical bachelor’s degree or equivalent experience, and one approved certification are required.

Support, deploy, monitor, maintain, and upgrade AWS cloud services and systems. Manage CI/CD pipelines, security requirements, system reliability, testing, and integrations. Contribute to architecture and design reviews, coordinate pipeline updates and deployments with developers, and help shape technical approaches for a rapidly evolving production environment.

Develop and maintain full-stack cloud software for national security analyst tools across the complete product lifecycle. Responsibilities include design, Java development, front-end and back-end engineering, testing, documentation, customer engagement, and maintenance. The role requires Linux proficiency, modern web technologies, Git workflows, collaboration in a small team, an approved cloud or Kubernetes-related certification, and an active TS/SCI clearance with polygraph.

Set technical direction for Toast’s Developer Experience platform, including local development, build tooling, shared libraries, testing frameworks, and developer portals. The role combines hands-on software engineering with architecture, cross-team technical leadership, AI-assisted development, developer productivity measurement, mentorship, and roadmap prioritization.

Support and enhance AWS cloud-based systems by developing features, deploying updates, maintaining services, monitoring system health, managing CI/CD pipelines, and implementing security, redundancy, and reliability practices. Participate in architecture and design reviews, coordinate pipeline and deployment activities with developers, and maintain multiple production services. The role requires an active TS/SCI clearance with polygraph, relevant experience, and an approved technical certification.

Develop, maintain, test, and enhance complex software systems, including analytics, real-time systems, large-scale data processing, RF signal processing, visualization tools, and software integrations. Contribute to system design, requirements analysis, hardware/software trade-offs, software reuse, and COTS/GOTS evaluations while resolving software issues.

Develop and maintain SharePoint sites, applications, workflows, and business-process automation solutions in a secure enterprise environment. Collaborate with customers to remediate requests, assess scope and effort, provide expert SharePoint guidance, support migrations, document solutions, and report project status. The role supports Army intelligence operations and requires TS/SCI clearance, DoD IAT Level II certification, U.S. citizenship, onsite work at Fort Meade, and occasional travel.

Develop, integrate, test, and maintain mission-critical Java web services for an ICAM solution. Build scalable REST microservices supporting attribute-based access control, LDAP integration, and access decisions. Responsibilities include software design, requirements analysis, testing, operational maintenance, problem resolution, and system trade-off analysis. The role requires TS/SCI clearance with polygraph, substantial software engineering experience, and SIGINT, IA, or IT domain experience.

Develop and modernize data-processing services for a mission-critical application supporting Power BI dashboards and national security systems. Responsibilities include data ingestion, extraction support, vulnerability remediation, customer troubleshooting, malware analysis modernization, metadata storage, prototyping mission tools, and developing algorithms. The role requires collaboration with engineering teams and support for front-end processing modernization.

Develop firmware, backend systems, and tooling for cellular IoT devices. Responsibilities include C development for STM32 microcontrollers, embedded AI integration, cellular communication, low-power optimization, device debugging and validation, and backend development with Python and Ruby on Rails. The role collaborates with hardware, electronics, and manufacturing teams and requires independently leading complex development initiatives.

Builds and maintains custom software applications using .NET, Java, and JavaScript technologies. Responsibilities include software design, coding, debugging, testing, troubleshooting, and developing web-based and client-server systems. The role handles complex technical projects autonomously, may provide technical consultation and team leadership, and requires strong collaboration and communication skills. Travel up to 15% is expected.

Builds and maintains custom software applications, performing design, coding, debugging, testing, troubleshooting, and technical consultation. Works autonomously on advanced projects, may lead work groups, and follows coding standards and technical designs. The role supports web-based and client-server systems and requires strong collaboration and communication. Up to 15% travel is expected.

Senior backend engineer responsible for designing and implementing new features, scaling and optimizing the platform, improving Postgres and Elasticsearch performance, fine-tuning LLMs, and making architectural decisions. Collaborate with engineering team, take ownership of features, write performant, maintainable code, and help shape product and infrastructure for data-intensive applications (NLP, search, indexing).

Develop and lead frontend platform engineering for native and hybrid mobile applications. Build reusable, well-tested Android and iOS SDK components, contribute to architecture and system design, collaborate with product and engineering teams, own customer-facing deliverables, and identify product improvements while maintaining strong engineering standards.

Develops and leads software architecture for phased-array antenna testing, automated test processes, and data analysis. The role defines software requirements, creates test plans, leads integration, supports production testing and troubleshooting, and mentors engineers. It requires collaboration with hardware design teams and leadership across multiple software projects, with expertise in MATLAB, C++, Python, RF systems, antenna testing, and test equipment.

Lead full‑stack development of web applications using C#, ASP.NET (Web Forms or MVC), HTML, CSS, and JavaScript libraries. Code, test, integrate, and document solutions; mentor teams; design complex systems; work with databases (preferred MongoDB) and deploy to web servers (preferred IIS).

Administer, maintain, and support a secure, multi-tenant Kubernetes-based PaaS within a Linux environment. Ensure platform reliability, scalability, security compliance, and optimal cluster performance through scripting, containerization, IaC, monitoring, troubleshooting, and collaboration with DevOps teams.

Administer, maintain, and support the PaaS component of a secure, multi-tenant Kubernetes compute environment. Ensure cluster reliability, scalability, security compliance, and performance. Develop automation and scripts, manage containerization, deploy Helm charts, use IaC (Ansible), monitor with Prometheus/Grafana, and troubleshoot Kubernetes workloads.

Develop and maintain Java-focused backend libraries and services that ingest, transform, and standardize diverse data formats. Build Python components, optimize MongoDB services, administer Linux systems, upgrade servers, install packages, monitor services, and troubleshoot environments. Contribute to scalable architecture, data modeling, integration patterns, Git workflows, code reviews, and continuous improvement. The role is onsite, requires U.S. citizenship, and involves a Top Secret SCI with Polygraph clearance.

Integrates and supports software in Linux environments for mission-critical government projects. Responsibilities include customer-facing request triage, technical requirements gathering, Linux administration, COTS/GOTS/FOSS software installation and configuration, CI/CD, infrastructure automation, containerized service deployment with Kubernetes, Big Data processing, monitoring, and source-code collaboration.

Integrates and deploys software across secure high-performance computing environments using Linux, Ansible, containers, Kubernetes, and DevOps/GitOps practices. Serves as a Tier 3 escalation lead, diagnosing infrastructure issues, performing root cause analysis, automating remediation, maintaining deployment pipelines, and producing technical documentation. Requires active TS/SCI clearance with polygraph, U.S. citizenship, and 8+ years of related experience.

Designs, develops, maintains, configures, and tests integrations supporting Atlassian products including Jira, Confluence, Bitbucket, and Bamboo. Uses Linux CLI and Bash, Python, or Groovy scripting to automate tasks and troubleshoot integration, performance, and compatibility issues. Collaborates with developers, system administrators, project managers, stakeholders, and mission customers to deliver reliable tools and services in a Unix environment.