Top Senior Software Engineer Jobs in Hartford, CT

As a Staff Software Engineer, you will develop core banking experiences, craft user flows, build APIs, and integrate third-party software, ensuring high-quality, well-documented, and test-driven code.

Develop core experiences for bank users by creating user flows, building APIs, and integrating with third-party software. Advocate for architectural decisions and provide technical guidance to team members.

As a Senior Backend Engineer, you'll lead backend architecture, drive technical decisions, optimize systems for performance, and coordinate across teams to enhance consumer-facing features.

Develop core experiences for bank administrators and customers by writing clean, documented code, creating robust APIs, and integrating with third-party services.

The Sr Staff Software Engineer will build core banking experiences, craft user flows, robust APIs, and integrate with third-party software, requiring significant back-end development experience.

The Staff Software Engineer will develop user experiences and APIs for banking applications, focusing on code quality, system design, and team mentorship.

Lead technical direction and deliver collision-free motion planning for humanoid robots. Design, implement, test, and deploy trajectory optimization, MPC, and sample-based planners; architect modular planning systems integrated with perception, state estimation, and control; develop algorithms robust to uncertainty; and provide cross-team technical leadership and mentorship.

The Senior Software Engineer will design, build, and maintain solutions for transit agencies, focusing on IoT devices and cloud services, ensuring reliable communication and device management.

Lead design and implementation of the payment integrations platform (APIs, SDKs, embedded web), build scalable payment rails (ACH), drive technical roadmap, mentor engineers, collaborate cross-functionally, and improve operations via automation, tooling, and observability.

The role involves owning the email channel's infrastructure, developing frontend experiences, designing backend systems, and ensuring deliverability in a cloud-native environment.

As a Senior Software Engineer, you'll design and build distributed systems in Go, collaborate across teams, and ensure performance and reliability at scale.

Design, build, and operate backend platform services and infrastructure, owning features end-to-end from design through production. Improve reliability, performance, and scalability across services and the data layer, investigate and resolve production incidents, and convert fixes into durable improvements. Perform database work as needed (query/index tuning, sharding, capacity planning) and collaborate with SRE and application teams to meet zero-downtime SLAs. Mentor peers and raise engineering quality through reviews and best practices.

Lead Android-first development of growth experiments and features, using AI-native workflows to design, implement, instrument, and analyze A/B tests. Ship performant, reliable Android experiences at scale, mentor teammates, participate in on-call, and codify AI-native engineering playbooks for broader adoption.

As a Senior Software Engineer, you'll design modern scalable platforms, focusing on front-end and back-end development using VueJS/ReactJS and C# microservices, while integrating with AWS and modern data warehouses.

The Senior Software Engineer will develop software for automated mobile application analysis, lead implementation decisions, and mentor junior engineers.

Design, build, and lead scalable API and platform features. Mentor junior engineers and drive technical initiatives from design to delivery.

Design, develop, test, and own SDKs and REST APIs for a next-generation analytics platform. Collaborate with Product Management, contribute to DevOps and quality frameworks, perform code reviews, and mentor teammates to deliver performant, well-tested software.

As a Senior Software Engineer at MNTN, you'll design and operate backend systems for ad delivery, ensuring high performance and reliability. You'll work with Java, Kotlin, and Scala to handle high-throughput services and contribute to architectural decisions while improving system efficiency.

Lead architecture and implementation of Chainguard Repository: design, build, and operate high-availability backend services in Go that serve package registries and APIs; improve scalability, reliability, observability, and load testing; drive technical decisions, collaborate across teams, and mentor engineers.

Lead design and build of a 0-1 Identity Graph platform for real-time identity resolution. Own architecture, implement high-performance synchronous read models, build data pipelines, enforce PII privacy boundaries, ensure production resilience and observability, and mentor engineering teams while aligning cross-team stakeholders.

Build and own backend identity APIs and core authentication flows for scale. Partner with product and engineering leadership, author design docs, improve production resilience and observability, handle incident response and on‑call, collaborate across teams, and mentor other engineers.

Lead full-stack feature development for an enterprise IT lifecycle platform: design, build, test, and ship end-to-end solutions. Use AI tools to accelerate work while reviewing and hardening outputs. Mentor engineers, run code reviews, collaborate with stakeholders, set estimates and milestones, and influence product and roadmap decisions. Maintain reliability through testing, CI, and containerization.

Design and develop large-scale Java-based identity management features for PingIDM. Collaborate with distributed teams to analyze requirements, implement secure RESTful APIs, enable cloud deployments, optimize performance, and support customer-facing teams to resolve issues.

Lead design, implementation, and deployment of open-source, cloud-native features (Zarf). Integrate with defense systems, own architecture decisions, mentor engineers, engage open-source communities, produce documentation, and drive product direction with a focus on Kubernetes, cloud, and secure software delivery.

Lead as a customer‑embedded principal engineer to design, build, and ship production-grade solutions. Translate business needs into technical approaches, influence senior stakeholders, accelerate delivery in ambiguous environments, and transition work to FDE crews while driving long-term account impact.