Top Software Engineer Jobs in Hartford, CT

Develop and deploy customer-focused web, mobile, and backend applications across the full software stack. Design major features, contribute to architecture decisions, conduct code reviews, and ensure secure, high-quality implementations. Collaborate with stakeholders and cross-functional teams using Agile and SDLC practices. Manage version control, CI/CD, environments, and releases; maintain automated test coverage and perform root-cause analysis. Build and optimize relational data solutions using SQL Server, including complex queries, stored procedures, and performance tuning.

Design, build, deploy, and support scalable Java microservices on AWS. Provide technical leadership, architectural direction, code reviews, troubleshooting, proof-of-concept development, and cross-functional collaboration. Work with high-throughput data, messaging systems, distributed architectures, observability, and AI-assisted development tools. Participate in on-call support, mentor engineers, lead architectural initiatives, and deliver reliable SaaS platform features.

Own the development and maintenance of large-scale React Native applications for iOS and Android. Lead architecture improvements, React Native upgrades, native module development, performance optimization, automated testing, CI/CD reliability, and production debugging. Collaborate with cross-functional product pods, contribute to technical discovery and architecture, mentor engineers, and raise engineering standards while delivering scalable, maintainable mobile experiences.

Design, build, and operate foundational developer infrastructure across CI, build systems, deployment orchestration, and test platforms. Improve build speed, deployment safety, and test reliability while owning services end to end, including SLOs, observability, and on-call responsibilities. Partner with engineering teams to address platform pain points and lead cross-cutting technical projects through production.

Develop and scale NinjaOne’s ticketing and billing products using Java and Kotlin. Design reliable enterprise software, REST services, relational data systems, caching solutions, and client-server applications. Address scalability, asynchronous design, API development, testing, and integrations with accounting platforms such as QuickBooks and Xero. Contribute hands-on code, apply object-oriented design principles, and help ship software serving millions of endpoints.

Develop and operate backend systems supporting post-transaction processing for Affirm Card. Break down projects, write tested and extensible code, collaborate with product and engineering teams, monitor system health, troubleshoot issues, participate in on-call support, and contribute to code reviews and team development.

Design and own secure, scalable wallet infrastructure for custody, key management, transaction signing, authorization, recovery, and multichain systems. Architect support for MPC, HSMs, secure enclaves, TEEs, smart contract wallets, account abstraction, and emerging cryptographic approaches. Define security boundaries, policy engines, secrets management, authentication, and programmable authorization while making foundational build-versus-buy decisions and guiding systems from first principles through production.

The role involves designing and developing backend APIs, collaborating on B2B solutions, and optimizing performance and maintainability in a fast-paced, flat organization.

Build and scale Go backend services for agent quoting, configuration, and application submission. Design APIs and distributed systems, write unit and integration tests, resolve partner-specific issues, contribute to architecture, support production debugging, improve CI/CD automation, and use AI coding tools in daily engineering workflows. Collaborate with adjacent teams and mentor teammates through pairing and documentation.

Build and support a modern enterprise data platform for investment and financial decision-making. Responsibilities include developing data ingestion, transformation, orchestration, APIs, services, web applications, automation, and event-driven solutions. The role involves integrating internal and vendor data sources, ensuring data quality and governance, applying software engineering and CI/CD practices, supporting applications, and collaborating with technology, investment, and business stakeholders.

Design, develop, test, deploy, and maintain reliable software applications and backend services across Corpay’s payments ecosystem. Build reusable APIs, contribute to automated testing and CI/CD pipelines, collaborate within agile teams, review code, support less experienced engineers, evaluate technical solutions, and contribute to cloud platform engineering or agentic AI initiatives.

Designs and supports AWS cloud infrastructure, Infrastructure as Code, CI/CD pipelines, containerized deployments, monitoring, observability, and DevSecOps capabilities. Troubleshoots environments, improves software delivery and operational reliability, collaborates across engineering and security teams, contributes to cloud architecture, and mentors less-experienced engineers. The role also evaluates AI-assisted tools and emerging technologies to improve productivity, quality, and delivery outcomes.

Lead and mentor engineering teams to design, build, deploy, and operate Java/Spring microservices and cloud-native clinical interoperability products. Collaborate with product, EHR partners, and cross-functional teams, ensure code quality, CI/CD, security, observability, and Agile delivery for large-scale healthcare systems.

Design and implement a distributed query optimization system for MongoDB. Research query systems, architect features, write and review production-quality C++ code, debug large codebases, coordinate cross-team integrations, and mentor engineers while shaping long-term roadmap and performance improvements.

Lead the technical direction and architecture of the Foundations platform team, owning authentication, authorization, SSO, secrets management, tenancy, and core platform services. Design APIs, drive services through launch, make technical decisions, establish engineering standards, and mentor engineers without formal management authority. Partner with engineering and product leaders to align execution with priorities.

Develop and maintain full-stack web applications, batch systems, vendor integrations, and automation solutions for investment professionals. Collaborate with business and technical teams on requirements, planning, development, quality assurance, support, and maintenance. Use .NET, C#, SQL, AWS, Python, ETL tools, REST APIs, and microservices while applying disciplined Agile development practices.

Build and operate a stablecoin payment rail for merchant checkout, subscriptions, refunds, reconciliation, and onchain settlement. Deliver full-stack features across Go services and React/Next.js interfaces, including APIs, protobufs, database migrations, wallet connectivity, and durable Temporal workflows. Improve accessibility, conversion, performance, and observability through logs, metrics, and traces. Participate in on-call rotations and collaborate cross-functionally to integrate Payment Acceptance into Coinbase’s developer platform.

Develop and maintain LabVIEW-based test, metrology, and automation software for high-power laser test stations. Manage laser test data storage using SQL Server and SQLite, build visualization and reporting tools, and collaborate with engineering and manufacturing teams to improve test methods, throughput, and automation. The role requires hands-on experience with laboratory instrumentation, industrial equipment, optical test benches, and NI data acquisition hardware.

Develop software and firmware for embedded microcontrollers and FPGAs supporting high-power fiber lasers and amplifiers. Assist with PCB and hardware prototyping, bring-up, testing, validation, documentation, manufacturing transition, and field support. Collaborate across engineering teams to resolve issues throughout development and deployment, with infrequent travel for field assistance and conferences.

Design, build, and modernize Guidewire ClaimCenter solutions, Java APIs, and cloud-native AWS services for claims operations. Own end-to-end delivery, including testing, CI/CD, observability, releases, and production support. Partner with business and operations teams to identify automation opportunities, prototype solutions, and productionize successful capabilities. Lead incident resolution, mentor engineers, develop implementation playbooks, and build Google ADK agents for document understanding, claims decision support, and workflow orchestration.

Design and develop scalable C++ software for endpoint state and control across Windows, macOS, and potentially Linux. Build reliable, multi-process systems that enforce endpoint behavior, manage local state, support IPC, and operate across millions of devices. Responsibilities include implementing features, improving platform performance, writing design documents, defining architecture and IPC contracts, and making technical decisions in an evolving, sparsely documented environment.

Leads architecture and technical direction for scalable, high-availability software services. Owns complex, multi-team initiatives, makes autonomous technical decisions, partners cross-functionally, mentors engineers, establishes standards, and advocates for quality. The role develops mission-critical systems supporting millions of endpoints and requires deep Java expertise, scalable system design, API development, relational databases, and strong testing practices.

Leads development and architecture of scalable Java software for NinjaOne’s endpoint management platform. Designs high-availability systems, addresses large-scale datastore performance and data-volume challenges, contributes to APIs and platform improvements, drives quality practices, owns technical initiatives, collaborates cross-functionally, and mentors junior engineers.

Build scalable, API-first platform capabilities through manifest-driven development. Develop Java and Kotlin backend services and Python workers for third-party integrations, collaborate across engineering teams, participate in architecture reviews, and troubleshoot production systems using logs, metrics, and traces. The role requires expertise in highly scalable systems, object-oriented design, REST services, relational databases, responsive messaging, caching, and software quality practices.

Design and implement scalable backup software for endpoints, servers, and cloud applications. Develop Java and Kotlin services, optimize databases and queries, debug production systems, and resolve distributed-system performance issues. Contribute code, reviews, architecture discussions, documentation, and cross-team reliability initiatives. Mentor engineers and help deliver resilient products operating at large scale.