Top Senior Software Engineer Jobs in Baltimore, MD

Build and architect Alpaca’s algorithmic trading platform, developing high-performance, low-latency brokerage systems. Responsibilities include extensive frontend and backend coding, distributed system design, database and concurrency architecture, high availability, throughput optimization, and object-oriented modeling. The role requires prior experience with trading or exchange systems, including OMS and RMS platforms, and involves making critical technical decisions in a demanding early-stage environment.

Design, develop, troubleshoot, and support secure, high-volume software applications in an Agile environment. Provide technical leadership across the software development lifecycle, lead code and design reviews, establish automated testing, monitor production systems, and improve quality practices. Collaborate with architects, product partners, customers, and engineers while mentoring team members. Build and maintain AI-enabled components responsibly, applying security, privacy, governance, observability, and compliance standards.

Lead the architecture and implementation of high-performance, reliable core services operating at massive scale. Design synchronous and asynchronous APIs, database schemas, and distributed systems; conduct benchmarking, profiling, monitoring, and optimization; participate in reviews and on-call rotations; resolve production issues; and drive independent experiments and solutions.

Build and operate production custody systems: signing service, key management, chain integrations, and transaction pipelines. Own end-to-end subsystems, integrate new chains, collaborate with cryptography on threshold signing and key recovery, write post-mortems, and produce clear async design docs and PRs.

The Senior Software Engineer will design and implement systems for AI integration, build scalable backend services, and mentor team members, ensuring high-quality systems that meet user needs.

Lead and mentor a team of engineers while contributing hands-on to complex features. Define architecture, drive development best practices, conduct code reviews, coordinate cross-functional requirements, and ensure timely delivery of high-quality ecommerce marketplace software.

Design, develop, and maintain scalable cloud-based microservices and foundational platform capabilities for authentication, authorization, onboarding, RBAC, reporting, auditing, notifications, and APIs. Improve reliability through observability, monitoring, alerting, infrastructure automation, and operational reviews. Provide technical leadership, collaborate across teams, guide architecture and best practices, reduce technical debt, and improve engineering efficiency.

Design, develop, and maintain scalable Python applications; collaborate with cross-functional teams to deliver features; ensure performance and quality; identify and fix bugs; maintain code quality and automation; lead and mentor team members using agile practices.

Architect, build, and maintain scalable full‑stack applications using React, TypeScript, Node.js, and AWS. Own features end-to-end, optimize performance and usability, collaborate with founders, and use AI tools to accelerate development in a fast-paced startup.

Design, build, and scale Shepherd’s core platform, backend systems, APIs, user-facing applications, and AI-powered legal workflows. Architect secure, reliable infrastructure for sensitive legal data, collaborate with legal and product teams, build internal tools, optimize performance, and own technical decisions. The role also involves rapid prototyping, mentoring and recruiting engineers, and contributing to SOC 2 readiness and data privacy practices.

Develop and document enterprise-grade SaaS platform functionality while improving quality and performance. Responsibilities include full-stack development, functional and unit testing, defect triage, code reviews, API and process documentation, operational support in regulated environments, and collaboration within Agile and DevOps teams. The role requires expertise in C#, ASP.NET Core, T-SQL, Entity Framework Core, web technologies, software design, debugging, distributed architectures, and high-performance APIs.

Develop and support front-end applications for intelligence and analytics users. Responsibilities include AngularJS and NodeJS development, UI usability and Section 508 compliance, user support, feature enhancement, testing, documentation, quality control, and technical leadership across multiple software teams. The role requires collaboration with UX and outreach teams and expertise in software performance analysis, web services, databases, scripting, Agile development, and code management.

Design, develop, test, and maintain backend systems and APIs for ingesting, processing, and routing large-scale telemetry data. Own end-to-end features, contribute to architecture and internal tools, write automated tests, participate in on-call/support rotation, and collaborate with cross-functional teams to deliver scalable, high-performance distributed systems.

Designs, develops, tests, troubleshoots, documents, and maintains software applications throughout the project lifecycle. Responsibilities include coding, database and system administration, performance testing, debugging, software upgrades, requirements documentation, user support, vendor coordination, and collaboration with analysts, administrators, and engineers. The role also provides guidance to junior development staff and supports cross-departmental projects.

Develops, maintains, tests, and enhances complex software systems for an Intelligence Community customer. The role analyzes system performance and usage, designs software solutions, documents test results, and evaluates COTS/GOTS alternatives. Requires extensive software engineering experience, cloud infrastructure expertise with OpenStack, strong Linux and Python skills, and an active TS/SCI clearance with polygraph. Work is performed full-time at a customer location in Jessup, Maryland.

Develops and sustains secure Kubernetes and DevSecOps deployment packages for ICAM environments. Automates build, testing, scanning, signing, packaging, and release workflows; integrates distributed policy and identity services; troubleshoots customer deployments; and creates technical documentation. The role supports resilient operations across enterprise, multi-site, tactical, and disconnected environments while contributing to software supply chain security, customer assessments, technical reviews, mentoring, and Agile delivery.

Own the assessment, hardening, testing, modernization, and sustainment of a government SDN software baseline. Develop secure C++ and Python solutions, remediate vulnerabilities, improve testing, debug application and network issues, and support containerization, CI/CD, deployment, and security scanning. Collaborate with platform engineers and government stakeholders, document technical decisions, validate releases, and mentor engineers in Navy environments.

The role involves optimizing hardware support within a software stack for AI model deployment, collaborating with teams and hardware vendors to enhance performance and portability across platforms.

Design, develop, test, and deploy supply chain software for inventory, warehouse, and fulfillment systems. Lead technical decisions, mentor engineers, coordinate cross-functional Agile projects, decompose work, delegate tasks, and promote strong development and testing practices. Build monitoring systems that ensure business-process correctness and support high-volume, data-intensive applications.

Develop and sustain cloud software for cyber intelligence and AI/ML capabilities. Responsibilities include requirements analysis, Java development, distributed systems, cloud deployment, software integration, testing, troubleshooting, analytics development, and technical documentation. The role uses AWS, Kubernetes, infrastructure-as-code, CI/CD, Hadoop technologies, Linux, microservices, LLMs, and RAG frameworks while supporting large-scale data processing and national security missions.

Develop and sustain cloud software for national security missions, including requirements analysis, integration, testing, validation, and issue resolution. Build AWS-based services and distributed systems using Java, Kubernetes, infrastructure-as-code, CI/CD, Linux, and microservices. Integrate AI/ML capabilities, LLMs, and RAG frameworks while supporting large-scale compute clusters, big-data technologies, RESTful services, and cloud security practices. The role requires active TS/SCI clearance with polygraph and collaboration in a mission-driven cyber intelligence environment.

Lead the design, development, and optimization of scalable web and mobile applications using Ruby on Rails, React, React Native, Docker, PostgreSQL, and AWS. Own architecture, APIs, data models, monitoring, performance, and code quality while collaborating with product, data, and DevOps teams. Provide technical leadership through system design, code reviews, mentoring, and continuous improvement in a remote-first healthcare technology environment.

Develop and maintain software using Python, Bash, Linux tools, and Git. Automate tasks and deployment processes, support CI/CD with GitLab CI, and work within Agile methodologies. The role may also involve Ansible, containerization, secrets management, identity and access management, datacenter infrastructure management, observability platforms, and Atlassian tools. An active TS/SCI clearance with polygraph is required.

Own test strategy for a portfolio of government web applications, build automated regression suites, integrate testing into CI/CD, and lead four test engineers. The role replaces manual regression, improves release confidence and delivery speed, and embeds security into development pipelines. Responsibilities include coaching government testers and engineers, communicating readiness to nontechnical stakeholders, and supporting adoption of sustainable testing practices in a U.S. Air Force environment.

Build and ship production software for Toast’s retail platform, partnering with engineering, product, and customers. Responsibilities include identifying opportunities, designing and prototyping end-to-end solutions, making foundational technical decisions, incorporating customer feedback, tracking industry trends, and deploying AI-powered experiences. The role supports large grocery and convenience-store customers and may involve visiting stores to understand operator workflows.