Top Senior Software Engineer Jobs in Baltimore, MD

Design, build, and maintain user-facing and foundational backend services; improve system reliability and automation; collaborate with stakeholders; own domains; mentor engineers; integrate and direct AI agents across development lifecycle.

Build and maintain backend services and infrastructure to support core ML/AI product features. Design scalable, resilient, high-performance systems, implement production REST APIs, deploy and manage applications (Docker/Kubernetes), and collaborate cross-functionally while coding daily.

Design and implement scalable backend and distributed systems for a marketing intelligence platform. Build near-real-time ingestion and processing, scale an incrementality/experimentation product, integrate AI-powered workflows, improve data ingestion/exports and connection-state systems, and contribute frontend components to deliver end-to-end product experiences.

Participate in full SDLC building and integrating software for DoD customers. Develop C++/Python systems, curate synthetic geospatial raster data, apply TDD, operate in DevSecOps pipelines, and use containerization and CI/CD for deployment and testing.

Lead the technical direction for the engineering team, architect systems, design APIs, and mentor engineers while improving backend infrastructure.

Lead technical direction and contribute to the frontend codebase, building user-facing tools and mentoring team engineers to enhance user experiences.

As a Senior Software Engineer at Medallion, you'll lead projects, mentor team members, and work with technologies like Python, Django, React, and TypeScript to impact healthcare operations.

The Staff Software Engineer will lead projects, mentor team members, write code using Python, Django, React, JavaScript, and TypeScript, and impact the healthcare system with software solutions.

Lead architecture and evolution of Juniper Square’s distributed services, cloud infrastructure, and developer platform. Design scalable, multi-tenant, event-driven systems; build paved-road developer tooling, CI/CD, and observability. Hands-on coding, prototyping, and performance troubleshooting. Enable production AI/LLM workloads, ensure security/compliance, support enterprise upmarket needs, and mentor engineering teams to raise operational excellence and reliability.

As a Senior Software Engineer, you'll design and maintain frontend applications and reusable components, integrate APIs, mentor engineers, and ensure high-quality user experiences in the fintech space.

As a Senior Software Engineer at Flex, you'll design and maintain financial services architecture, mentor junior engineers, and ensure scalability and security for innovative financial products.

The Senior Software Engineer will architect and optimize AI-powered developer tools, enhance the SDLC, collaborate across teams, and mentor peers to improve engineering productivity.

Build and operate scalable backend services and distributed systems for global payments. Design payment orchestration, ledgering, workflow engines, partner integrations, and public APIs. Own end-to-end projects, influence architecture and engineering standards, mentor teammates, and collaborate with product and engineering leadership to ship production-grade infrastructure.

Design and build scalable backend services and distributed systems powering global payments. Develop payment orchestration, ledgering, workflow engines, partner integrations, and public APIs. Influence architecture, own projects end-to-end, collaborate with product, mentor engineers, and operate production systems.

Design, build, and own disposable isolated microVM sandboxes and related runtime infrastructure for AI coding agents. Improve reliability, performance, and security across macOS, Windows, and Linux; lead architecture, mentor engineers, engage open-source communities, participate in on-call rotations, and collaborate with Product and adjacent teams.

Lead design, build, and operation of AI-powered product features across backend, frontend, and AI systems. Make architecture decisions, drive production deployments, improve code quality and reliability, mentor engineers, and own features end-to-end.

Provide technical leadership and hands-on engineering across AI, data, backend, and frontend systems. Drive architecture, remove technical risks, set engineering standards, mentor senior engineers, and influence cross-team technical direction.

The Senior Software Engineer will develop mission-critical solutions, ensuring data and network security while working with leading-edge technologies.

The Software Integration Engineer will provide customer support for HPC software and manage UNIX, LINUX, and Windows systems while integrating and configuring software in various environments.

Architect, develop, and maintain full‑stack software systems for DoD environments—focusing on performance, scalability, reusable components, and the full software lifecycle. Collaborate with engineers and stakeholders, implement modern JavaScript front ends and object‑oriented backends, review code, optimize performance, and mentor junior developers.

Design, build, and maintain cloud-native applications using .NET and React. Develop backend services, APIs, and front-end interfaces while ensuring system stability and scalability. Collaborate across teams to improve healthcare solutions through software and AI-powered tools.

As a Senior Software Engineer, you'll design and build scalable market data systems, improve API architecture, and enhance overall system performance, contributing to Alpaca's infrastructure for trading financial assets.

As a Senior Software Engineer, you will design and develop user-facing products and back-office tools while collaborating with diverse teams to solve complex problems with innovative solutions.

As a Senior Software Engineer, you'll design and build distributed systems in Go, collaborate across teams, and ensure performance and reliability at scale.

As a Senior Software Engineer, you will work across the stack to create scalable and reliable systems for tracking freight intelligence, influencing architecture, mentoring, and collaborating with various teams.