Top Software Engineer Jobs in Hartford, CT

Build and maintain the core backend product: design and implement features, take ownership of end-to-end outcomes, iterate and fix bugs without a QA team, collaborate with product on scoping, and contribute to company culture and hiring.

As a Software Engineer, you'll design and develop microservices using a cloud-native tech stack, with a focus on financial services and secure systems.

Design, build, test, and document core networking software features across client and backend services. Improve efficiency, scalability, and stability of networking systems, own running services (observability, incident response, support escalations), and bring a security-first mindset to design and implementation.

Design, develop, test, and maintain .NET applications and RESTful APIs. Collaborate in Agile teams using GitHub/Git and Visual Studio. Ensure quality through testing, debugging, documentation, and observability. Troubleshoot and enhance existing software, mentor teammates, and promote security, reliability, scalability, and compliance.

Design, build, and maintain backend systems and versioned APIs for payments; collaborate with product, design, and infra; deliver features, tests, deployments, and long-term roadmaps while upholding high engineering standards.

Senior Backend Software Engineer responsible for extending APIs and backend systems, working with product and design, interfacing with PostgreSQL, improving testing, and addressing architecture, security, anti-fraud, performance, scalability, personalization, and payments. Mentor peers, participate in on-call rotation, coordinate across teams, and use LLMs where appropriate to improve product and development workflows.

Design, develop, and maintain software applications: implement features, fix bugs, participate in code reviews and Agile ceremonies, troubleshoot issues, support QA efforts, produce documentation, and collaborate across teams while occasionally leading small projects and training peers.

Designs, codes, tests, and documents .NET applications; follows SDLC and Agile/Scrum practices; supports Tier 3 incidents; works on system integration and CI/CD (Jenkins, GitHub); collaborates with product owners and vendors; participates in production releases and mentors junior developers.

Build, operate, and scale tier-0 backend services that ingest and process billions of emails daily. Design and deliver backend features, improve system stability, performance, and scalability, collaborate across R&D, participate in on-call rotations, and drive operational excellence and knowledge sharing.

Seeking a Software Engineer with 3+ years experience in software development, programming (Go, Java, C++, C#), and strong analytical skills.

Build and maintain shared JavaScript libraries and UI components, implement business logic for tooling workflows, review JavaScript/TypeScript code, lead technical initiatives, and apply TDD and agile practices to frontend web tools for the digital supply chain.

Collaborate with a distributed team to develop, maintain, and modernize the Landscape management software for Ubuntu, focusing on quality code and automated testing.

Build and maintain full-stack features for Cengage Learning Platforms using Java/Spring backends and React frontends. Integrate AI/LLM services, design APIs, improve platform architecture, troubleshoot cross-stack issues, write testable code, and collaborate with product, UX, and QA on accessible, high-quality learning experiences.

The Software Engineer will manage edge networking configuration, evolve the ingress layer, build network observability, and support regional expansion while defining technical standards for the team.

The Software Engineer will manage edge networking configuration, evolve the ingress layer, build network observability, support regional expansion, and establish team practices in a growing network-focused team.

Design, develop, test, and maintain software across the SDLC. Collaborate with cross-functional teams to gather requirements, lead module coding, troubleshoot issues, participate in code reviews, contribute to architecture, and use AI to augment development, testing, documentation, and productivity.

Design, develop, test, debug, and maintain end-to-end software solutions. Troubleshoot incidents, define technical requirements, mentor junior engineers, and contribute to delivery, architecture, and team practices using cloud, API, and observability tooling.

Develop, test, and improve the OT Security Platform as part of the Microsegmentation Product Team, ensuring high-quality software and architecture.

The Senior Software Engineer will design, build, and maintain CI/CD pipelines, improve automation workflows, and mentor junior engineers in a security-focused development environment.

Lead technical strategy and architecture for Coinbase's Blockchain Platform, overseeing nodes, indexers, wallets, and asset lifecycle. Drive cross-team platform rearchitectures, enforce security and reliability standards, champion AI-driven automation, use observability to improve reliability, and represent the platform to executives to secure alignment and resources for large-scale blockchain infrastructure initiatives.

Lead technical strategy and execution for multi-quarter initiatives; build and maintain AI-driven systems; mentor and raise the technical bar across teams; collaborate cross-functionally; ensure data security and HIPAA-compliant practices; operate in an AWS + Kubernetes environment while introducing new technologies as system load grows.

Define and drive Payments technical strategy and architecture for rails, routing, and funds-flow systems. Lead large cross-team initiatives, ensure financial correctness, improve reliability and cost via observability, mentor senior engineers, and align stakeholders across product, risk, and regulatory teams.

Lead design and implementation of Affirm's Lakehouse Platform using Iceberg, Spark, Snowflake, and cloud storage. Drive platform roadmap, governance, access controls, performance and cost optimization, analytics engineering best practices, observability, and on-call readiness. Partner cross-functionally, mentor engineers, and build scalable, secure, self-service data infrastructure and semantic/agentic data tools.

Design, build, and iterate patient onboarding systems and registration/eligibility flows. Own end-to-end projects, run experiments, optimize for performance, correctness, and resilience, and provide technical leadership, mentoring, and cross-functional collaboration with Product, Design, and Analytics.

Design, develop, maintain, and enhance SmartCop public-safety applications across the software development lifecycle. Collaborate with cross-functional teams, use C#/.NET and MS SQL Server, consume/develop web services, apply object-oriented design, leverage AI-assisted development tools, participate in code reviews, and follow automated testing and quality-focused practices. Support deployment, troubleshooting, and implementation decisions while meeting North American Central Time collaboration requirements.