Top Software Engineer Jobs in Portland, ME

Full‑stack engineer building donor and fundraising features using React, TypeScript, REST, and Ruby on Rails. Deliver small-to-medium projects, improve performance and maintainability, participate in code reviews and QA, collaborate with product and design, and contribute to architecture and team mentorship.

The Senior Software Engineer will build scalable payment systems, manage backend services, collaborate cross-functionally, and mentor teammates within a dynamic financial tech environment.

The Staff Software Engineer will architect backend systems, collaborate with data scientists, and mentor engineers while handling complex, distributed systems and APIs.

The Senior Software Engineer, Mobile DevOps focuses on enhancing the POS app's development processes, optimizing build speeds, and mentoring team members, ensuring high-quality output using AI tools.

The Principal Software Engineer will define technical roadmaps, guide system architecture, mentor leaders, and drive product direction in Capital Supply operations.

The Staff Software Engineer will lead the architecture of the Cloud Governance Platform, focusing on governance, security, and compliance while mentoring other engineers and influencing cross-team initiatives.

The Senior Software Engineer will lead the design of major payments-related features, mentor team members, and collaborate with UX and PM to define and roll out features, while continuously improving architecture and technical practices.

As a Staff Software Engineer Tech Lead, you will lead technical efforts for the POS app, mentor engineers, solve strategic challenges, and enhance development with AI tools.

Design, build, test, and roll out backend features for Toast's payments platform. Deliver scalable, secure APIs, collaborate with PM/UX and cross-functional teams, implement automated tests, monitor releases, and participate in design and code reviews.

The Senior Software Engineer will drive the retail technology initiatives at Toast, focusing on payment solutions and enhancing customer experiences. Responsibilities include collaborating on high-impact opportunities, technical decision-making, and adapting to customer needs.

As a Staff Software Engineer, you'll design and build scalable data infrastructure, optimize data pipelines, and collaborate across teams to deliver effective streaming solutions, leveraging technologies like Kafka and Spark.

As a Senior Software Engineer at Lob, you will develop logistics applications, collaborate with teams, and write technical documentation, primarily using Node.js and Go.

Design and build features for Dandy's manufacturing and supply-chain platform, including order routing, real-time order status, CAD->CAM automation support, performance optimization, and cross-team collaboration to deliver scalable production systems.

Design and develop software solutions enhancing user experience for Governance features, contribute to open-source software, communicate technical designs, and support team quality through reviews.

Build and scale real-time invariant enforcement across fund flows, contribute to core platform development, mentor junior engineers, and operate correctness models in production.

Lead the design and implementation of AI-based products, collaborate with stakeholders for strategic guidance, and build scalable systems while mentoring teams. Required to have significant experience in coding and AI technologies.

The role involves owning the architecture and technical direction of Payment Rails infrastructure, designing high-reliability systems for global payment processing, and leading cross-functional collaborations to create efficient, compliant solutions. Responsibilities also include mentoring team members and enhancing operational excellence through AI-driven improvements.

Develop and manage high-performance back-end systems, design secure APIs, optimize performance in cloud environments, conduct testing, and manage ML model lifecycles.

The Senior Software Engineer will develop, optimize, and maintain systems for the Capital Marketplace, collaborating across teams to enhance services for investors and stakeholders.

As a Senior Software Engineer, you'll build and enhance Collectly's healthcare financial products using Python and potentially React, focusing on backend systems and user-facing features.

Lead the technical strategy for Coinbase's Data Platform, architecting data systems for AI/ML workloads and ensuring data reliability, performance, and cross-functional alignment.

The Staff Software Engineer will architect and develop high-performance cloud services, resolve infrastructure bottlenecks, ensure engineering best practices, and mentor junior members.

Design, build, and maintain resilient full-stack services for distributed financial SaaS systems. Lead end-to-end projects, optimize performance, ensure security and observability, mentor teams, and reduce technical debt.

As a Principal Software Engineer, you'll architect and code backend services and ML models, integrate them with Salesforce, and mentor junior engineers.

As a Senior Software Engineer, you will design best practices for AI Agents, develop standards, collaborate on product opportunities, and stay updated on emerging Agent techniques.