Top Software Engineer Jobs in Hartford, CT

The Senior Software Engineer will design, develop, and maintain backend services for an IAM platform, collaborating with cross-functional teams to ensure robust and scalable solutions.

Design and deliver end-to-end software solutions (APIs, microservices, scalable data models), optimize performance, lead architecture and code reviews, mentor engineers, build CI/CD and observability, document systems, create fault-tolerant distributed systems, and lead front-end and mobile performance work. Must demonstrate broad experience across multiple listed technologies.

Lead architecture, delivery, and operation of large distributed telemetry databases. Define technical strategy, SLOs/SLIs, and reliability practices; drive performance, cost, and observability improvements; lead incident response and cross-team projects; mentor engineers; and represent engineering to stakeholders.

Join the Platform SysEng squad to design, build, and operate highly available, low-latency cloud-native infrastructure. Improve platform scalability, performance, and reliability; own SLOs/SLIs, capacity planning, and production operability; collaborate across teams to reduce region build times and ship platform improvements. Work primarily with Go/Python/Shell, Kubernetes, IaC, and observability tools, and participate in on-call rotations.

Develop and maintain performant web applications in Go and Vue.js, design and implement RESTful APIs, optimize SQL queries and schemas, collaborate with product and design, participate in code reviews and testing, and work with cloud providers and CI/CD to improve platform performance and reliability.

Lead design and implementation of backend services and APIs for payments, billing, settlements, ledgers, and reconciliation. Drive architecture for highly available, auditable financial platforms, integrate with payment processors and banking partners, ensure transactional integrity, observability, and compliance. Deliver end-to-end initiatives, mentor engineers, and operate mission-critical systems with strong emphasis on reliability, security, and scalability.

Work with senior engineers to develop, test, and maintain full-stack web applications. Build front-end interfaces, implement back-end APIs, write clean code, assist with testing and code reviews, participate in Agile ceremonies, and continuously learn new tools and best practices.

Lead design and delivery of scalable, secure full-stack systems; mentor engineers; integrate AI-driven and agent-based workflows; ensure cloud-native, containerized deployments and secure SDLC practices.

As a Senior Software Engineer, you'll build high-performing, scalable applications for Joyride's auction platform, working on new features and existing code.

As a Senior Software Engineer at NexHealth, you'll build scalable back-end systems, maintain integrations with EHRs, and manage cross-functional engineering projects to support the company's growth.

Build and operate full-stack, production-ready systems: design and ship AI-native mortgage automation, integrate third-party lending APIs, and architect scalable AWS infrastructure and job processing. Mentor engineers and ensure security, observability, and high reliability.

As a Senior Software Engineer (Backend), you will design and implement scalable applications, collaborate with agile teams, and mentor junior members while ensuring high code quality and performance.

As a Senior Software Engineer, you will design and develop backend systems, optimize application performance, and mentor team members while building intuitive front-end features.

Design and build scalable web applications, collaborate on product direction, and implement complex systems using ML techniques, ensuring software quality.

Design and maintain real-time vehicle-tracking, map-matching, ETA prediction, and disruption-detection systems. Build and scale real-time data pipelines, cloud backend services, and APIs. Develop infrastructure for algorithm validation and shadow testing, collaborate across product and design to prototype and deliver end-to-end features, and apply modern engineering practices through code reviews, pairing, and documentation to ensure reliable production systems.

Lead technical projects, collaborate with cross-functional teams, mentor junior engineers, and drive improvements in development practices in a cloud-based analytics platform.

Own server-side and infrastructure for Fool.com using Next.js and TypeScript. Build route handlers, server components, API integrations, caching (Redis/Cloudflare), AWS/Docker deployments, observability with DataDog, and end-to-end tests with Playwright. Optimize SEO crawler surface, sitemaps, canonicalization, and collaborate with front-end, content, and platform teams.

Design and develop high-performance services and APIs, focusing on cloud-based applications using Golang and Python, while ensuring code quality and security.

Lead design, development, and implementation of complex software systems for life & annuity policy administration. Provide technical leadership, mentor engineers, architect scalable mainframe solutions, troubleshoot critical issues, and collaborate with stakeholders to meet performance, reliability, and security goals.

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.

Lead Software Engineer responsible for designing, developing, testing, and maintaining a distributed processing application using Python and Java. Collaborate with product owners, data coaches, analysts, DBAs, and Agile teams to meet backend/frontend requirements, implement cloud and big-data solutions (Spark/Hadoop), and ensure program standards and reliable delivery.

Build and own mission-critical full‑stack features for a cannabis ERP and commerce platform. Work across product, design, and support to deliver high-quality code, tests, and AI-native workflows; define timelines, communicate progress, and ensure data integrity and compliance.

Build and ship full‑stack, behavior-driven growth experiments and user experiences to increase activation, retention, and expansion. Implement end-to-end A/B tests and feature flags, instrument analytics, analyze results, and collaborate with Product, Design, Marketing, and PLG. May participate in on-call rotation to support production services.

Design and build scalable backend components and indexing pipelines for semantic and hybrid retrieval, build retrieval orchestration and knowledge-graph services, improve retrieval quality via evaluation and observability, design APIs, and optimize latency, throughput, cost, reliability, and security for large-scale AI inference and retrieval workloads.

The Principal Software Engineer leads the design and development of scalable software solutions, mentors engineers, and drives architectural decisions while collaborating with cross-functional teams.