Top Senior Software Engineer Jobs in Hartford, CT

Leads a software engineering team, providing technical guidance, mentorship, and leadership. Directs complex end-to-end software design, development, testing, troubleshooting, monitoring, and implementation efforts. Resolves critical incidents, improves software delivery and business processes, evaluates technology trends, and serves as a subject matter expert across applications and systems. Partners with business stakeholders to define solutions, influence priorities, and execute complex technology initiatives.

Design and implement motion-planning software for autonomous vehicles, including behavior planning, trajectory generation, safety constraints, and real-time embedded performance. Integrate planning with perception, prediction, localization, and control systems. Validate solutions through simulation, closed-course trials, and on-road testing while addressing complex edge cases and collaborating with vendors, AI teams, and customers.

Build and own production software systems spanning embedded systems, real-time control, cloud services, and data pipelines. Responsibilities include architecture, coding, testing, reliability engineering, observability, incident response, technical design reviews, cross-functional hardware collaboration, hiring, and mentoring. The role requires strong systems fundamentals, distributed systems experience, debugging ability, and proficiency in at least one major programming language.

Develop and maintain a Medicare claims processing system in a mainframe environment. Responsibilities include designing, coding, unit testing, debugging, defect resolution, technical documentation, and installing changes in test regions. The role leads complex development components, translates customer requirements into work items, provides estimates and technical guidance, represents the team to clients, and mentors junior developers while supporting Agile/Scrum maintenance and operations.

Develop full-stack software for secure, scalable satellite ground communications platforms. Responsibilities include building Python backend services and APIs, designing TypeScript front-end applications, implementing authentication, authorization, microservices, databases, testing, and cloud deployments. The role involves collaborating with MBSE and test teams, translating requirements into technical designs, troubleshooting production issues, supporting integrations, and presenting engineering recommendations. Work requires maintaining secure, reliable systems for U.S. Government missions.

Build and expand fintech and payment systems using Go, microservices, databases, and cloud technologies. Design production APIs and tooling, diagnose customer issues, manage full release lifecycles, document systems, and mentor engineers. Collaborate with product and business teams while guiding AI agents to produce maintainable, observable, testable code that meets engineering standards. Work independently in a high-availability environment and contribute to next-generation financial products.

Provides architectural and technical leadership for institutional exchange systems, including matching engines, order management, market data, risk, and unified trading platforms. Leads ultra-low-latency distributed-system design, cross-team technical alignment, reliability standards, incident response, and multi-quarter initiatives. Maintains hands-on engineering contributions while mentoring senior engineers and developing technical leadership across teams.

Design, implement, and maintain partner integration solutions; translate partner requirements into scalable technical implementations; troubleshoot and automate fixes; collaborate with product and engineering teams to improve tools and ensure successful partner onboarding and launches.

Lead design and delivery of scalable customer-facing features, services, and APIs that process real-time data and AI-powered insights. Build web experiences, contribute to LLM/AI workflows, ensure reliability through observability and rollout practices, and collaborate cross-functionally with Product, Design, ML, and platform teams.

Lead technical strategy, build and maintain software systems using AI, mentor early-career engineers, collaborate across disciplines, and protect user privacy and security. The role involves developing scalable systems on AWS and Kubernetes while working with healthcare data and adhering to HIPAA and data-security best practices.

Lead the design, architecture, development, deployment, and optimization of scalable .NET backend systems processing millions of daily healthcare transactions. Mentor developers, guide technical decisions, improve CI/CD pipelines, implement secure APIs, and collaborate with product stakeholders. The role requires expertise in .NET, C#, ASP.NET Core, cloud-native AWS services, Kubernetes, microservices, distributed systems, testing, observability, and secure software development.

Build and optimize the core of a distributed compute engine in Rust for SQL and AI query processing. Responsibilities include designing and delivering engine capabilities, improving query performance, writing maintainable code, and solving complex systems and concurrency problems. The role requires expertise in data structures, algorithms, performance optimization, systems programming, hardware fundamentals, asynchronous programming, atomics, locks, and cache design.

Build and operate high-throughput backend services powering AI agent orchestration, connector integrations, and real-time data pipelines. Design scalable core platform services, collaborate with ML, frontend, and product teams, implement infrastructure-as-code and CI/CD, and mentor junior engineers to deliver reliable, AI-powered features.

Design and build reliable backend services and integrations for Coinbase’s Unified Merge Gate. Lead automated code review, policy evaluation, CI evidence, authorization, merge controls, repository migrations, safe rollouts, observability, and operational ownership. Partner with Security, Compliance, Infrastructure, and engineering teams to improve software review and deployment workflows while measuring merge quality, review volume, time-to-merge, and escaped defects.

Design, scope, and implement scalable backend and platform solutions for a reservations and waitlist product. Improve performance and usability, collaborate with Product and Design, identify high-impact opportunities, and contribute across the stack including APIs and front-end integration.

Leads technical vision and strategy for Affirm’s Marketplace, Search, Ads Platform, and consumer experiences. Designs scalable full-stack platforms, guides architecture and technical excellence, coordinates initiatives across engineering teams, mentors engineers, and drives reliable delivery of customer-focused products across iOS, Android, and Web.

Leads the design, development, and delivery of complex software systems. Drives architectural decisions and technical strategy, mentors engineers, conducts code reviews, partners with product stakeholders, and improves system performance, scalability, security, and compliance. Owns technical initiatives from design through delivery while maintaining high engineering standards.

Build and maintain JavaScript libraries, UI components, and workflow tools for Disney’s digital content supply chain. Implement business logic, review JavaScript and TypeScript code, lead technical initiatives, and apply test-driven and agile development practices. The role requires expertise in web development, Node.js or Java/Kotlin, HTTP servers and proxies, AWS cloud-native technologies, frontend development, and automation.

Architect and re-engineer highly scalable, resilient backend data systems supporting patient services. Lead distributed systems strategy, make architectural decisions, improve performance and reliability, mentor engineers, establish operational practices, and collaborate with product managers and cross-functional stakeholders to shape engineering and product direction.

Build and maintain shared JavaScript libraries, UI components, and workflow tools for Disney’s digital media supply chain. Develop business logic, review JavaScript and TypeScript code, lead technical initiatives, and apply test-driven and agile practices. Partner with product and program teams, address scalability and performance, support production incidents, and develop AI capabilities to accelerate software delivery.

Develop, maintain, test, and deploy Android applications for CVS Health pharmacy and wellness experiences. Build scalable Android architecture, core libraries, and new features using Kotlin, Jetpack Compose, Java, and Android SDK. Collaborate with product, design, UX, and backend teams in an Agile environment. Apply design patterns, concurrency techniques, CI/CD practices, and mobile software development lifecycle expertise while supporting multiple device sizes and orientations.

Own end-to-end frontend development for core crypto payment flows across web and mobile. Improve latency, availability, and SLOs; build user-facing features (contacts, real-time transaction status); identify and fix performance bottlenecks; partner with product/design/backend; mentor junior engineers to reduce customer friction at scale.

Own and lead Coinbase’s developer infrastructure platforms, including CI, build systems, and deployment orchestration. Set technical direction for complex cross-team initiatives, improve build and deployment performance, manage reliability and observability, and drive platform migrations and adoption. Partner with engineering leaders, operate production systems, mentor engineers, and deliver scalable tools used across the organization.

Owns delivery of backend money movement and card ledger systems, leading engineers through complex problems and ambiguity. Collaborates with product, design, analytics, and engineering stakeholders; defines scalable technical solutions; supports system availability, monitoring, on-call operations, code quality, and engineering standards. The role also includes mentoring and developing team talent while building highly available distributed systems for Affirm’s financial products.

Design, implement, and test high-throughput, low-latency microservices for Disney's linear advertising platform. Improve observability, translate product stories into tasks, own domain areas, participate in on-call rotations, and build LLM-enabled tooling and agentic workflows. Mentor peers and collaborate across teams to ensure operational metrics, monitoring, and system health.