Top Senior Software Engineer Jobs in Baltimore, MD

Integrate, install, configure, upgrade, compile, and sustain COTS/GOTS software in HPC environments. Develop automation scripts and playbooks, execute performance and failover tests, troubleshoot hardware/software, maintain virtualization and container platforms, produce technical documentation, track/report issues, and coordinate integration activities for system reliability.

Design, develop, maintain, and test complex enterprise software systems and cloud infrastructure. Implement solutions using COTS/GOTS, analyze system performance, troubleshoot issues, and collaborate with users and systems engineers. Emphasis on OpenStack-based cloud deployment, Linux and Python development, and IT operations support.

The Senior Software Engineer develops and enhances complex software systems, performs testing and reviews of software components, and provides inputs for system design.

Design and build cloud cost-management capabilities, including forecasting, anomaly alerts, cost allocation, data pipelines, transformation models, visualizations, and reusable UI components. Own features end to end from planning through release while improving application reliability and performance. Collaborate closely with engineers and founding team members, contribute to technical design and roadmap decisions, and work pragmatically in a fast-moving distributed startup environment.

Design, build, and operate shared cloud infrastructure across AWS, Kubernetes, Terraform, Databricks, and Cloudflare. Lead SRE and DevOps initiatives involving reliability, observability, CI/CD, incident response, disaster recovery, cost optimization, and developer self-service. Partner with application and data engineering teams to improve workload operations, deployment safety, and infrastructure scalability. Participate in on-call rotations and contribute to technical standards, architecture, documentation, and sustainable 24/7 operations.

Design, build, and maintain secure, performant browser extensions for Chrome, Edge, and other browsers using Manifest V3 and modern APIs. Develop features integrating with web content, backend services, and endpoint agents; optimize reliability; monitor evolving browser standards; and participate in testing, code reviews, and process improvement. The role requires investigating third-party web applications, understanding extension security models, and coordinating effectively with backend and non-browser engineering teams.

Define architecture and technical direction for Catalyst’s distributed data platform, including messaging, state management, reconciliation, streaming, storage, CI/CD, and Kubernetes operations. Build Go and Python frameworks, improve reliability and SLOs, lead incident response, maintain secure dependency and artifact delivery, and develop infrastructure automation. Collaborate across teams and with customers, review designs and code, establish engineering standards, and travel internationally up to 25% to support mission-critical deployments.

Owns the architecture and implementation of high-performance real-time streaming systems, including media ingestion, buffering, relay, packetization, telemetry synchronization, and distribution. Designs protocol modules, resolves interoperability challenges, improves latency and throughput, and maintains production reliability through testing, observability, incident response, and automated deployments. Partners with stakeholders, documents architectural trade-offs, mentors engineers, leads technical rituals, and travels internationally up to 25% to support customer and mission requirements.

Design, implement, and support high-performance storage and query infrastructure handling billions of events. Independently scope and deliver complex projects, optimize query performance, improve reliability, participate in on-call rotations, define KPIs and SLOs, reduce operational toil, debug production issues, collaborate cross-functionally, and mentor engineers.

Design, develop, and maintain scalable web and backend applications, public REST APIs, automated testing frameworks, and cloud-native services. Improve scalability, stability, monitoring, auto-scaling, CI/CD, security, and reliability. Conduct code reviews, troubleshoot production issues, document root causes and operational procedures, and collaborate with distributed engineering teams to deliver fleet-management platforms.

Design, build, and optimize scalable cloud and web software with focus on infrastructure, performance, and hardware integration for IoT devices. Collaborate with hardware teams to ensure connectivity and high availability, implement new features, and improve system efficiency.

Develop open source SDKs, enterprise APIs, UIs, and backend systems supporting large-scale computer vision datasets. Build scalable, maintainable, performant, and well-tested software for unstructured data and AI workflows. Contribute to enterprise deployments across customer clouds and on-premises environments, while improving tooling, automation, engineering practices, and open source community initiatives in a remote-first team.

The Staff SDET will design and implement automated test frameworks using TypeScript, collaborate with developers, and enhance testing processes within CI/CD pipelines.

The Senior Software Engineer will modernize USPS shipping technology, refactor legacy systems for cloud integration, and develop high-performance services using Go, while collaborating with teams and addressing production challenges.

Design, build, and operate high-performance Places/Search API services; drive architecture and scalability decisions; improve code quality and operational standards; mentor engineers; run experiments and telemetry-driven analysis; participate in feature delivery, on-call rotation, and customer-facing collaboration with automotive and mapping partners.

Design, build, and optimize GraphQL APIs, gRPC services and SQL queries for a promotions engine. Own complex technical problems, improve production scalability and performance, set up DataDog monitoring, participate in on-call rotations, mentor engineers, and deliver end-to-end features in an agile environment.

Build and operate AlphaSense's identity platform across user management, authentication, and authorization. Design scalable RBAC/ABAC/ReBAC systems, integrate authentication patterns (OAuth/OIDC/SAML), implement SCIM provisioning, and expose GraphQL/gRPC/REST APIs. Partner with security on SOC2/GDPR compliance, drive platform roadmap, champion testing, observability, and reliability, and operate autonomously from North America in close collaboration with the Helsinki team.

Own architecture, development, and reliability of ecommerce web applications (Symfony storefront and Laravel back-office). Lead front-end JavaScript/CSS direction, optimize SQL schemas/queries, improve observability and incident response, reduce legacy technical debt, establish AI-assisted development workflows, mentor engineers, and drive end-to-end delivery of scalable customer-facing features.

Build and ship full‑stack product features on a Python/Flask backend and React frontend. Design REST/GraphQL APIs, work with SQLAlchemy and relational data models, integrate LLM/AI features, use async task queues (Celery), and collaborate with product, design, and engineers to deliver reliable, well-tested features end-to-end.

Design, develop, maintain, and enhance complex software systems (analytics, algorithm development, large-data processing, real-time systems). Review and test components, resolve defects, and contribute to system-level design including hardware/software trade-offs and use of COTS/GOTS.

Develop, maintain, and enhance complex software systems for an intelligence team (analytics, algorithms, large-data processing, real-time systems). Review and test components, resolve defects, contribute to system design trade-offs, leverage COTS/GOTS, and work with system engineers using appropriate development methodologies and agile practices.

Design, implement, and maintain scalable Java-based software solutions. Collaborate across the SDLC with stakeholders and development teams, integrate DevOps and CI/CD practices, support operational tasks, ensure security and performance, drive feature development, conduct code reviews, and stay current with emerging technologies.

Design, build, and architect stablecoin and crypto infrastructure; integrate DEXs, DeFi protocols, and wallet providers; develop smart contract interactions; expand crypto product functionality and asset selection; collaborate cross-functionally; establish crypto development standards and ensure security and reliability for large-scale user experiences.

Technical leader for Platform & Infrastructure building scalable, resilient cloud-native systems to support large AI workloads. Define architecture, mentor engineers, solve systemic infrastructure bottlenecks, design foundational platform services, and collaborate cross-functionally to ensure secure, high-performance operations.

Lead architecture and scaling of cloud-native infrastructure to support large AI workloads. Mentor engineers, decompose complex systems, design foundational platform services, and collaborate with product, research, and security teams to ensure secure, performant, and highly available GPU/ML infrastructure.