Top Software Engineer Jobs in Portland, ME

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.

Develop high-reliability software for safety-critical applications in UAS technology. Collaborate with teams, maintain solutions, and automate processes.

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.

As a Staff Software Engineer, you'll enhance the release and configuration systems across environments, optimize release pipelines, and provide tooling for reliable deployment, ensuring consistency and scalability while collaborating with various engineering teams.

Responsible for enhancing client integrations and backend services, focusing on performance, documentation, and architectural challenges in a remote-first environment.

As a Staff Software Engineer, you will develop core banking experiences, craft user flows, build APIs, and integrate third-party software, ensuring high-quality, well-documented, and test-driven code.

As a Senior Staff Software Engineer, you will lead the design and development of AI-powered products, mentor team members, and architect backend systems using Python and modern frameworks while ensuring code quality and optimizing performance.

Develop core experiences for bank administrators and customers by writing clean, documented code, creating robust APIs, and integrating with third-party services.

The Sr Staff Software Engineer will build core banking experiences, craft user flows, robust APIs, and integrate with third-party software, requiring significant back-end development experience.

The Staff Software Engineer will develop user experiences and APIs for banking applications, focusing on code quality, system design, and team mentorship.

As a Staff Software Engineer at Juniper Square, you'll lead architectural decisions and develop AI-powered systems, mentoring engineers and ensuring high-quality technical standards while collaborating with cross-functional teams.

The Senior Software Engineer will develop software and implement solutions, mentor engineers, and improve engineering processes at a remote startup.

Design, build, and operate backend platform services and infrastructure, owning features end-to-end from design through production. Improve reliability, performance, and scalability across services and the data layer, investigate and resolve production incidents, and convert fixes into durable improvements. Perform database work as needed (query/index tuning, sharding, capacity planning) and collaborate with SRE and application teams to meet zero-downtime SLAs. Mentor peers and raise engineering quality through reviews and best practices.

Design, build, and lead scalable API and platform features. Mentor junior engineers and drive technical initiatives from design to delivery.

The Senior Software Engineer will lead the design and development of core capabilities for SingleStore's data platform, focusing on high-performance systems and mentoring other engineers. This includes solving system-level problems and implementing scalable solutions in a collaborative environment.

Design and build scalable shared platform systems and libraries used across product teams, define APIs and standards, influence cross-team architecture, perform code reviews, and maintain documentation to improve developer experience and platform reliability.

Lead high-impact, cross-product engineering initiatives as the top individual contributor. Define success, simplify complex systems, shape technical strategy, coach senior engineers, and drive measurable outcomes. Stay hands-on with code and production systems while enabling teams and using AI tools to accelerate delivery.

Senior software engineer responsible for architecting and implementing high-scale distributed systems, leading small engineering teams, mentoring junior engineers, and delivering reliable cloud-deployed services using Python, container orchestration, and CI/CD best practices.

Lead design and implement large-scale backend storage features for Backblaze's object storage platform, focusing on host-managed SMR support, IO benchmarking and performance optimization, driving technical decisions, mentoring, and delivering production rollouts across thousands of servers.

Work on Backblaze's storage platform (B2 Object Storage and Computer Backup) to improve durability, throughput, and architecture. Lead technical design, drive implementation of large features, shape coding practices, and participate across design, implementation, testing, and rollouts while collaborating proactively in a remote-first team.

Build and maintain full-stack features for a React/TypeScript frontend and NestJS/TypeScript backend, integrate LLM-powered conversational agents, design APIs, auth (SSO/SAML), real-time updates, background processing (AWS SQS), database schemas (PostgreSQL/Sequelize), API docs (Swagger), and tests (Jest/pytest). Collaborate on architecture, code review, and production support.

Lead and scale GridUnity's quality engineering strategy: harden agent-driven test pipelines, enforce evidence-backed release gates, retire manual tests, build agent-verdict calibration, embed automated testing in CI/CD, mentor teams, define quality metrics, and expand the system across product lines.

Design, build, automate, and support cloud infrastructure and CI/CD for production systems. Run and optimize EKS/Kubernetes at scale, implement IaC (Terraform), observability, security best practices, disaster recovery, and cost optimization. Collaborate with engineering teams, participate in on-call incident response, and produce architecture documentation and operational runbooks.