Top Software Engineer Jobs in Hartford, CT

Owns technical direction and hands-on execution for major products and systems. Designs scalable backend, frontend, API, database, and infrastructure solutions; writes code; leads architecture decisions; resolves production issues; improves engineering quality; drives critical initiatives; and mentors engineers across teams.

Owns technical direction and hands-on execution for major products and systems. Designs scalable backend, frontend, API, database, and infrastructure solutions; writes code; drives architecture decisions; leads critical initiatives from design through production; improves engineering quality through testing, security, observability, and development practices; and mentors engineers across teams.

Design, develop, modify, test, and maintain full-stack software applications. Engineers will understand product areas, codebases, and systems; write high-quality, tested code; analyze data; solve complex problems; collaborate with product and engineering teams; conduct design and code reviews; and mentor junior developers while delivering customer-focused products.

Own and evolve Voltus’s infrastructure platform, including Kubernetes and Nomad workloads, AWS architecture, identity and secrets, stateful systems, observability, infrastructure as code, CI/CD, and developer tooling. Lead business-critical migrations with minimal downtime, establish reliable deployment and rollback practices, mentor engineers, participate in on-call, and build secure infrastructure supporting AI-assisted development.

Lead full-stack growth engineering across eligibility, identity, access, client configuration, and reporting systems. Build Python-based GraphQL and REST APIs, React and React Native experiences, scalable database systems, and secure HIPAA- and GDPR-compliant solutions. Own ambiguous cross-domain technical projects, write RFCs, coordinate roadmap delivery, mentor engineers, contribute to engineering strategy, and participate in on-call operations and remediation.

Design, develop, deploy, and support complex OneStream software features and services. Own end-to-end delivery, APIs, SDKs, data contracts, performance, scalability, reliability, and production quality. Lead technical design discussions and code reviews, mentor engineers, improve CI/CD and testing practices, and collaborate cross-functionally. Build user interfaces with modern frameworks, resolve production issues, and responsibly use AI-assisted development tools while ensuring correctness, security, and architectural alignment.

Build and operate accessible, high-performance member-facing web applications using a front-end-first full-stack approach. Contribute to APIs, backend services, data flows, integrations, frontend architecture, testing, observability, and performance improvements. Own projects from concept through production, collaborate with Product, Design, Data, and Clinical teams, improve developer experience, support AI-assisted coding practices, participate in technical reviews and incident follow-up, and mentor engineers.

Design and scale backend systems, APIs, and services for Nango’s open-source developer infrastructure platform. Build APIs, SDKs, UIs, and runtime systems, optimize performance and reliability, solve integration challenges with customers, shape the roadmap, and maintain the open-source repository. The role requires strong ownership, product thinking, developer empathy, communication, and autonomy in a remote-first startup environment.

Develop and maintain software in an agile, test-driven environment using pair programming. Lead technical decisions involving application and data model design, mentor engineers, collaborate cross-functionally with product and design, and ensure application stability and performance. Participate in on-call support and improve system reliability. Use AI developer tools to accelerate development and improve code quality.

The Senior Backend Software Engineer will design and maintain backend systems, optimize performance, ensure security compliance, and mentor junior engineers in a collaborative environment.

Build and maintain internal web services and UIs to support deployment workflows, strengthen CI/CD and release safety, improve observability and auditability, and operate internal services including on-call support and production rollouts.

The role involves building user-facing features, collaborating with product and design teams, and ensuring high-quality product delivery while optimizing performance across systems.

The Software Engineer will scale and optimize the platform's infrastructure, manage data layers, and enhance system operations to support growing LLM requests.

As a Software Engineer at OnePay, you will develop and implement features, build scalable products, and work closely with teams to enhance customer experiences.

As a Software Engineer, you will develop and maintain features using AI-assisted tools, collaborate with teams, and enhance software solutions for better user insights.

Develop, integrate, and test spacecraft flight software across the full lifecycle. Implement and upgrade cFS-based applications, perform unit-to-platform verification in simulation and HIL/FlatSat environments, support integration with hardware and payloads, and participate in anomaly resolution, mission operations support, and proposal activities.

Build and operate Sourcegraph Cloud platform: develop inter-cloud connectivity, control plane orchestration, expose infrastructure APIs, debug and patch upstream IaC dependencies, ensure reliability and participate in on-call rotation to meet SLAs.

Develop and optimize distributed systems for syncing customer data, focus on scalability, reliability, and performance for global clients.

Design, architect, develop, and maintain OneStream Marketplace solutions using web, cloud, SQL, and enterprise platform technologies. Lead design and code reviews, define APIs and coding standards, optimize application and database performance, support deployment automation, and ensure software quality. Mentor engineers, train new hires, guide requirements discussions, approve pull requests, and collaborate with technical and non-technical stakeholders to deliver customer-focused solutions.

Own the automated testing strategy and frameworks across the company’s UI and service-oriented systems. Build risk-weighted coverage dashboards, API-based integration tests, CI quality guardrails, and AI-assisted testing workflows using Claude and MCP tooling. Coach engineers to own automated tests, reduce flaky tests and escaped defects, and lead the Quality Enablement practice. The role requires hands-on coding across unit, integration, contract, and browser testing while partnering with engineering, product, and platform teams.

Build and evolve scalable backend systems and APIs for a large SaaS platform. Partner with Product, Design, and QA from ideation through deployment, contribute to microservices architecture, improve testing and observability, identify operational risks, and mentor teammates. The role emphasizes reliable, maintainable solutions, strong collaboration, architectural decision-making, and continuous improvement.

Develops and supports software applications. The posting requires U.S. citizenship or naturalized citizenship and mandates that all work be performed within the continental United States, Alaska, or Hawaii.

Develop and improve embedded graphics and compute drivers, customize products for embedded hardware and real-time operating systems, and profile and optimize drivers and applications. Write and review technical specifications while collaborating on reliable, high-quality safety-critical solutions. The role requires embedded software development, debugging, troubleshooting, and familiarity with graphics APIs, ARINC 653, and safety-critical development practices.

Design, architect, develop, test, and support scalable full-stack applications for a high-volume, multi-tenant data platform. Own features from design through delivery, contribute to technical strategy and roadmap development, ensure operational excellence, collaborate across distributed teams, and mentor engineers. Apply cloud-native technologies and AI-assisted development practices while supporting near-real-time analytics and reliable production operations.

Build and ship robust Android features for ClassPass in a large modular codebase. Collaborate with product and design, mentor junior engineers, conduct code reviews, write technical documentation, solve complex problems, improve systems, and contribute to architectural decisions using Kotlin and Jetpack Compose.