Top Senior Software Engineer Jobs in Hartford, CT

Join the Query Integration team to enhance MongoDB's query engine, integrating features, improving performance, and contributing C++ code with a focus on database systems.

Own quality engineering and test automation for BRINC's LiveOps web platform and backend services. Design and maintain automated API, integration, and end-to-end test frameworks, validate security/IAM controls and ML/vision outputs, build test infrastructure, run performance/load testing for real-time streaming and teleoperation, integrate tests into CI/CD, triage failures, and produce quality metrics and release-readiness reports.

Design and build secure, scalable systems as a Full-Stack Software Engineer, leveraging expertise in Next.js, TypeScript, PostgreSQL, and AI tools to enhance cybersecurity within global infrastructure.

The Senior Full-Stack Software Engineer will design, build, and maintain secure, scalable web applications using modern technologies, with a focus on AI-assisted development and application security.

As a Systems Engineer, you will enhance Windows support for Swift and develop features for internal projects and the Swift community, focusing on system architecture and tooling improvements.

As a Backend Software Engineer, you will design and implement backend systems for mobile and web experiences, lead technical decisions, and optimize performance.

Develop and maintain ClickHouse's billing platform, integrate with external systems, design secure frameworks, and collaborate with cross-functional teams to enhance business processes.

Build and deliver end-to-end product capabilities using Python and Next.js/TypeScript. Lead design, implementation, reliability, observability, CI/CD, and integrations. Champion AI-assisted development practices and agentic coding workflows, collaborate cross-functionally, and ensure production readiness and operational excellence.

Senior technical leader responsible for architecting and delivering complex, distributed, cloud-native systems on Microsoft Azure; driving adoption of AI-assisted development tools; implementing observability, monitoring, and reliability practices; leading cross-team delivery, performance optimization, and incident response; and mentoring engineers in design and best practices.

Lead a hands-on engineering team to improve reliability, reduce technical debt, and maintain Greenshades' payroll/HR/tax products. Drive AI-first workflows, own reliability backlog and incident root-cause analysis, set engineering standards, partner with product/QA, report to the CTO, and recruit and develop engineers.

Establish and scale software quality practices for AI-driven cybersecurity products. Design tests for deterministic and probabilistic behavior, integrate validations into CI/release pipelines, expand test methodologies (integration, system, stress, workflow), maintain test environments and observability, and build tooling and fixtures for repeatable test conditions while collaborating with engineering to shift quality-left.

The Senior Software Engineer will design backend services, improve data pipelines, and enhance reporting infrastructure while mentoring other engineers. This role supports capital partners by ensuring accurate data flow through Upstart's platform.

Lead the technical direction of Care & Onboarding platforms by driving architectural decisions, overseeing large initiatives, and enhancing engineering quality.

Lead architecture and multi-year technical strategy for financial data pipelines and reporting. Design and deliver backend services in Go, ensure accuracy, timeliness, and auditability of financial data, and partner with Finance/Accounting/Tax to translate regulatory requirements into scalable systems. Mentor senior engineers and set architectural standards across Financial Engineering.

Own and deliver major features across the flight booking funnel: flight search, booking creation, and post-booking fulfillment. Implement award ticket pricing, point transfers, and integrations with airlines and GDS partners. Collaborate with the flights expert to scale routing, booking engines, and partnership integrations.

The Senior Full-Stack Software Engineer will develop full-stack web applications, collaborating on UI and backend systems using various technologies to deliver impactful features.

As a Software Engineer at Texas Sports Academy, you will design and ship AI-driven software features across various systems while collaborating directly with founders.

The role involves building platforms and core systems for identity services at Keycard, focusing on developing distributed systems and CI/CD automation while creating a best-in-class developer experience.

Develop, maintain, and troubleshoot Microsoft 365 and Power Platform solutions. Build .NET and Power Platform applications (Power Apps, Power Automate, Power BI, Dataverse), customize SharePoint, create PowerShell automation, integrate systems, support tenant and environment configuration, monitor Dataverse performance, assist with POCs, user support, and status reporting.

Lead the technical vision for complex systems, drive architectural strategies, write production-ready code, and align teams for public sector compliance.

Develop and support backend systems for CoLab's 3D AutoReview features, integrating machine learning concepts while collaborating across teams. Solve complex math challenges in 3D design analysis.

The role involves designing and building backend services for mobile app user acquisition, focusing on microservices, data pipelines, optimization, and collaboration with data scientists on ML integration.

As a Software Engineer, you'll design solutions for employer benefits, build software using modern technologies, and engage in continuous improvement and mentorship within the team.

Lead architecture and technical strategy for an internal platform that provides operational visibility into high-volume fund movements. Drive AI-first tooling, build fault-tolerant search and remediation systems, align cross-functionally, and elevate engineering quality through mentorship, design reviews, and process improvements.

Design, build, and operate Kubernetes-based compute orchestration and developer tooling. Deliver new compute capabilities, automate operations and observability, integrate AI into workflows, and partner with Security and Reliability to ensure platform scalability, performance, and incident response.