Top Software Engineer Jobs in Hartford, CT

Build and scale front-end experiences for Alteryx AI products using React, TypeScript, and micro frontend architecture. Develop reusable UI components, integrate backend services and AI workflows, improve accessibility, performance, testing, and reliability, and guide technical direction. Collaborate across Product, Design, Backend, and Platform teams while mentoring engineers and driving modernization, architecture, and developer experience improvements.

Design, develop, maintain, and enhance healthcare software applications, particularly billing and enrollment systems. Collaborate with architects and engineers, interpret technical and business requirements, participate in Agile delivery, perform unit testing and impact analysis, resolve production issues, research architectural solutions, and provide technical guidance. The role also serves as a platform subject matter expert, estimates work, follows secure coding practices, and mentors less experienced engineers.

Build and own user-facing features and core platform architecture across frontend, backend, and ML pipelines. Integrate AI workflows (LLMs, embeddings) for curriculum generation and automated evaluation. Manage end-to-end development: requirements, design, implementation, CI/CD, testing, observability, and iteration while collaborating with product, design, ML, and customer teams.

Develops, tests, enhances, and troubleshoots software and database products. Collaborates with senior developers, project managers, and stakeholders throughout design, development, deployment, and code review. Writes unit tests, fixes defects, prototypes features, documents technical decisions, and participates in Agile sprints. The role requires strong programming skills, a bachelor's degree, and the ability to obtain and maintain an active Secret clearance.

Lead technical ownership of InfiniBand and GPU interconnect fabric operations for hyperscale AI supercomputers. Drive incident response, deep multi-layer debugging across hardware/firmware/drivers/OS, and define failure models, playbooks, telemetry, and automation to improve reliability, observability, and scalability of GPU clusters and platform SLAs.

Develop scalable software across the full lifecycle, from requirements and system design through deployment and maintenance. Build reusable features, frameworks, and libraries using secure engineering practices. Collaborate with stakeholders and product owners in an Agile/Scrum environment, troubleshoot complex issues, improve performance and stability, maintain code quality through reviews and automated testing, and contribute to technical roadmaps and process improvements.

Design, build, and operate scalable, secure data platform infrastructure for ingesting, processing, cataloging, and accessing petabytes of data. Improve Spark/Databricks reliability and developer experience, build ingestion/replication systems, develop internal libraries and tooling (Go/Python), and collaborate with cross-functional teams to support analytics, ML, and customer-facing data products.

As a Software Engineer, you'll develop software using Ruby, Javascript, and support AWS infrastructure. Responsibilities include maintaining and building applications, contributing to high-end software releases, and mentoring other engineers.

Build and scale backend data platforms and services for real-time loan origination and financial reporting. Lead quarterly delivery, guide engineers, define technical plans, collaborate with product and design partners, improve reliability and operational practices, monitor service metrics, participate in on-call support, uphold engineering quality standards, and mentor team members. The role requires developing highly available distributed systems and scalable data pipelines using technologies such as Python, Kotlin, AWS, MySQL, Kubernetes, Spark, and Airflow.

As a Senior Principal Engineer, you'll define and drive the technical strategy for customer experience platforms, lead architectural decisions, and mentor engineering teams to enhance customer and agent experiences.

Research, architect, design, develop, integrate, verify, and test software for high-speed optical networking products. Own a key system component, implement features, solve customer requirements, and collaborate across R&D teams. The role emphasizes C++ development on Linux, object-oriented software, system components, and operational automation, with desirable experience in device drivers, BSP software, and optical networking protocols.

As an Applied R&D Engineer, you will develop backend application software in a Kubernetes environment, focusing on streaming APIs, system design, and code quality.

Build and ship end-to-end features for Augment’s iOS app, collaborate closely with product, design, backend, and fellow iOS engineers, and contribute to architecture, code quality, tooling, and long-term product health. The role emphasizes Swift and SwiftUI development, ownership, thoughtful collaboration, feedback, and effective use of AI-assisted development tools.

Join Azure PostgreSQL to design, implement, and test features in a relational database engine (query processing, logging, storage, IO, scale-out). Collaborate with stakeholders, write maintainable code, define test plans, operate live services (on-call), and contribute to open-source PostgreSQL and Linux.

Build and architect scalable Android client code, UI frameworks, tooling, and server-driven UI architecture using Kotlin, Compose, GraphQL, and related technologies. Establish engineering best practices, automated testing, and modernization strategies; collaborate across client and server teams; influence architecture roadmaps; mentor engineers; and deliver forward-looking technical solutions with minimal supervision. The role supports Netflix experiences across millions of users and thousands of devices.

Build high-quality, maintainable frontend software with a small collaborative team. Advise client teams on modern development practices, create scalable applications, apply test-driven development, and continually improve technical skills through ongoing learning.

Work directly with the founder to design and build core product features: integrations that pull license data, automation to file renewals/applications, data cleaning with AI, dashboard and alerting UX, and establish engineering practices for testing, deployments, and security. Term contractor role with potential conversion to full-time based on performance.

Develop software in Go and Python, review code, write design documents, and build reliable shared platforms and services for critical government systems. The role requires independent project ownership, strong engineering practices, and the ability to ramp quickly in complex environments. Work is remote-first but must be performed within the United States or its territories.

Build and architect Alpaca’s high-performance algorithmic trading platform. Responsibilities include writing backend and frontend code, designing distributed and highly available systems, optimizing low-latency and high-throughput performance, and developing scalable databases, messaging systems, concurrency controls, and service-oriented architectures. The role also involves making critical platform decisions and potentially contributing to order and risk management, trading systems, observability, cloud infrastructure, and financial ledger capabilities.

Develop, test, document, and support software applications and integrations. Perform unit, regression, security, and load testing; remediate application security issues; analyze system impacts; support monitoring and on-call operations; assist with architecture, deployments, estimates, and technical documentation. Build scalable, maintainable solutions and reporting dashboards while collaborating with security teams, teammates, and business partners.

Develops and optimizes Azure HPC and AI platform software supporting GPU-based training and inference workloads. Responsibilities include hardware/software integration, device virtualization, performance analysis, debugging, coding, architectural design, on-call support, issue resolution, and cross-team collaboration. The role improves scalability, reliability, test coverage, and performance across Azure infrastructure and AI training services.

Owns the design, development, testing, deployment, and maintenance of production software. Builds C#/.NET backend services, Angular web applications, and .NET MAUI mobile apps; optimizes SQL Server databases; resolves production issues; improves reliability, security, performance, and observability; writes tests and documentation; participates in code reviews; and translates ambiguous business needs into maintainable technical solutions.

As a Fullstack Software Engineer, you'll design, develop, and maintain scalable frontend and backend systems while collaborating across teams.

Build and validate challenging Codebase Q&A tasks for AI agents using production Go repositories. Responsibilities include exploring unfamiliar codebases, understanding runtime behavior and history, rewriting engineering questions, refining rubrics and foils, running validation workflows, documenting tasks, and responding to expert review. Work is fully remote, asynchronous, and paid per approved task.

Leads the design, development, testing, debugging, deployment, and maintenance of complex COBOL mainframe applications supporting Medicare claims processing. Provides technical leadership, estimates, troubleshooting, documentation, client communication, and mentorship within an Agile team. The role requires advanced expertise in COBOL, JCL, CICS, TSO, VSAM, Medicare claims systems, DevOps/DevSecOps processes, and rigorous software development practices.