Top Software Engineer Jobs in Hartford, CT

Build, modernize, deploy, and operate CMG’s marketing platform across current and legacy .NET systems. Develop APIs, integrations, background jobs, and loan-data workflows; troubleshoot issues across application code, SQL Server, vendor APIs, and Azure; and improve testing, CI/CD, deployment safety, and architecture. Work hands-on with coding agents, structured requirements, acceptance validation, and production ownership while migrating legacy applications toward modern services and internal APIs.

Join Supabase as a Software Engineer to own the Terraform provider, improving reliability, driving technical strategy, and creating documentation for seamless IaC workflows.

The Software Engineer, Backend Engineer will develop, automate, and maintain core functionalities for Rescale customers, focusing on backend systems and cloud services.

Design, build, and maintain scalable end-to-end systems and APIs/SDKs for an enterprise custody platform. Work full-stack across databases, cloud deployments, CI/CD, and security; troubleshoot issues, integrate emerging technologies, and mentor junior engineers.

Design, develop, and maintain scalable web applications using .NET backend and Angular/React frontend. Collaborate on requirements, implement RESTful APIs, optimize performance, debug, maintain documentation, support end-users, and work within CI/CD and DevOps workflows.

Design, develop, customize and integrate Microsoft Dynamics 365 CRM/CE solutions. Build entities, forms, workflows, plugins, reports and dashboards using CRM SDK, C#, JavaScript, ASP.NET and SQL. Troubleshoot issues, estimate implementation approaches, collaborate with stakeholders, document solutions, and mentor junior developers. Banking domain experience preferred.

The Software Engineer, Platform will design and develop backend APIs, ensure scalability, collaborate on B2B solutions, and support cross-functional teams.

The Web3 / Full-stack Software Engineer will design, develop, and deploy software solutions for staking products, collaborating with engineers and UX designers to enhance UI and ensure security of blockchain networks.

Design, build, and operate Airbnb’s global service mesh and network infrastructure. Responsibilities include defining mesh capabilities, improving routing, security, resilience, and failover, establishing SLOs, leading incident and change management, mentoring engineers, coordinating cross-functional infrastructure initiatives, and optimizing capacity, reliability, and cost for large-scale distributed systems.

Build and maintain secure, full-stack cybersecurity and compliance applications for cloud and on-premise environments. Develop APIs, integrations, data ingestion and normalization, risk analytics, relationship models, role-based access, CI/CD pipelines, and containerized deployments. Support post-quantum cryptography and compliance workflows while troubleshooting production issues and applying DevSecOps practices. Collaborate across engineering, cloud, cybersecurity, and compliance teams in a highly regulated, ambiguous product environment.

Design, implement, and maintain cloud-native full-stack software to migrate, preserve, and make large volumes of government records searchable and accessible. Build Section 508-compliant frontends and secure backend APIs, follow API-first and CI/CD practices, defend against vulnerabilities, mentor engineers, and collaborate with cross-functional teams to deliver reliable, performant systems.

Design, develop, and maintain high-quality cloud-based applications within an Agile team. Collaborate on architecture, product requirements, and software development; troubleshoot production issues; evaluate technologies; provide technical leadership; and optimize performance through memory management, parallelization, and algorithm efficiency. The role also involves building multitenant database architectures, implementing secure APIs and event-driven systems, writing unit tests, and debugging complex software issues.

Develop comprehensive testing strategies and automated test frameworks for UI, API, component, unit, integration, and end-to-end testing. Build performance and load tests, generate test reports, identify regressions, and provide design feedback. Collaborate with engineering, product, and UX teams in an agile environment while supporting AI-driven products, microservices, cloud infrastructure, and CI/CD workflows.

Develop and maintain manual and automated testing for a B2B SaaS web application, APIs, and mobile apps. Responsibilities include designing test cases, building UI and API automation, performing end-to-end, acceptance, exploratory, regression, and functional testing, investigating defects, and improving QA processes throughout the software development lifecycle. The role collaborates with developers, product managers, and stakeholders to ensure product quality and customer-focused releases.

Provides cross-program technical authority for flight and ground software, setting architecture, standards, technical direction, and roadmap. Leads complex technical decisions, reviews, verification, security, risk management, and software readiness across programs. Mentors senior technical leaders, drives reuse and platform standardization, represents software engineering to customers and partners, and establishes AI adoption strategies across the organization. The role does not own program delivery, schedules, or line management.

As a Founding Software Engineer, you'll design, develop, and maintain robust backend systems, create user-facing AI features, and collaborate with teams to enhance healthcare tools.

Lead the design and evolution of predictive maintenance platform, build and scale ML-powered features, and mentor other engineers.

Lead full‑stack development and architecture for Spark’s broker platform. Deliver customer‑facing features, partner with product/design, mentor engineers, resolve technical debt, and set engineering standards while using AI developer tools.

As a Senior Software Engineer, you'll develop and build tools for creative projects while leading feature development and collaborating with teammates.

Design, build, and operate backend systems for prediction markets, including order management, trade matching, settlement, and market resolution. Architect distributed, low-latency systems with strict financial correctness, lead multi-quarter technical projects, mentor engineers, and collaborate with Product, Compliance, and Risk to meet regulatory requirements.

Design, build, and operate the GraphQL API platform that routes high-volume traffic. Deliver end-to-end projects, improve reliability and performance, own SLOs and incident response, mentor engineers, and collaborate with product teams to evolve platform APIs and tooling.

Responsible for leading a team of engineers, supporting product development, identifying technical issues, and ensuring high-quality code delivery in backend systems at scale.

Develop ML/RL models and infrastructure for AV simulations, optimize training loops, and support project timelines in autonomous vehicle tech.

Senior Software Engineer to design and deliver Golang-based microservices, mentor a small pod, estimate and implement features, produce unit and end-to-end tests, collaborate on design and code reviews, improve SDLC, and apply SRE observability practices while working with cloud-scale data stores such as Snowflake, DynamoDB, and Cassandra.

Serve as the senior technical engineer on a delivery team, writing production code, shaping architecture, mentoring engineers, diagnosing complex issues, and owning software quality and reliability. Build TypeScript and JavaScript applications using Node.js, Express, React, PostgreSQL, REST APIs, testing, and observability. Modernize legacy systems, manage integrations and data synchronization, and use AI tools and automation to improve engineering workflows and delivery.