Top Senior Software Engineer Jobs in Hartford, CT

Design, build, and operate scalable backend services and APIs for a SaaS platform using Python/FastAPI. Ensure reliability, performance, and observability across distributed systems. Work with PostgreSQL, SQLAlchemy, Temporal, Redis, AWS, and Terraform. Build frontend features with React and TypeScript, integrate third-party APIs, adopt AI-assisted development tools, mentor engineers, and drive architecture and developer experience improvements.

Design, develop, and deliver scalable software systems and APIs across the full lifecycle. Lead architecture, integrate AI/ML components, implement microservices/serverless and CI/CD, ensure security, observability, and performance, mentor engineers, and collaborate with product and business stakeholders to meet timelines and quality standards.

Design and evolve FedRAMP High GovCloud platform infrastructure. Build reusable Terraform modules, manage Kubernetes production workloads, translate compliance into auditable AWS implementations, improve monitoring and operational readiness, mentor FedOps engineers, and adopt AI-assisted engineering workflows.

Design, build, and ship customer-facing product features end-to-end with strong product sensibility. Work autonomously without heavy PM overhead, prioritize UX, performance, and polish, and take ownership from idea through production. Implement and maintain full‑stack features using React and TypeScript at a fast-growing, security-focused startup.

Lead design and delivery of enhancements to a next-generation AI agent platform. Own large features and infrastructure, mentor engineers, set technical standards, drive cross-team initiatives, improve reliability and SLOs, and influence product and process decisions to scale systems supporting millions of interactions.

The Senior Software Engineer will focus on infrastructure, reliability, and platform engineering, designing scalable systems, managing CI/CD processes, and evolving observability and incident response protocols.

The Sr Software Development Engineer will design, develop, and maintain scalable cloud services, enhance system reliability, automate infrastructure, and collaborate across teams to align platform capabilities with business needs.

The Senior Software Development Engineer will design and build cloud infrastructure, lead CI/CD platform development, mentor engineers, and enhance developer productivity and system performance.

The Staff Software Engineer on the AUE team is responsible for designing and maintaining offensive cybersecurity services, mentoring team members, managing projects, ensuring code quality, and driving technical direction within a collaborative environment.

Build and maintain complex customer-facing features, support other engineers, and take ownership of technical decisions while collaborating with Product and Design teams.

The Senior Software Engineer will develop and maintain Chainguard OS's Elastic Build service and tooling, focusing on automation and system reliability, while ensuring documentation and transitioning of shared libraries.

The Staff Software Engineer will focus on quality-driven engineering, automated testing, CI/CD pipelines, AI integration, and mentoring junior engineers while collaborating remotely.

Build and maintain pipelines and web scrapers to create a large case-law dataset, implement metadata extraction (citations, overruling/appeals), ensure scraper reliability, optimize core utilities, expose data via APIs/websockets, and benchmark/evaluate tasks.

As a Senior Software Engineer, you will create and optimize 401(k) plan systems, enhance user experience, and ensure system reliability for a fintech company focused on retirement benefits.

Design and implement cloud management infrastructure and CI/CD pipelines, build tools, and ensure high software quality while collaborating with the engineering team.

Design and implement core components of networking systems at Ditto, focusing on transport protocols, performance, and modular architecture.

Life360 seeks a Senior Software Engineer to enhance AI-native mobile development tools. The role focuses on maintaining infrastructure for continuous testing and quality automation, collaborating with teams to improve product development, and applying AI insights for efficient workflows.

The Senior Software Engineer will design and build scalable backend systems, integrate third-party mortgage platforms, and optimize AI-powered features to enhance mortgage underwriting processes.

Optimize Ubuntu integration across latest IoT and server-class hardware, lead customer engagements, and work with open source communities in a remote, collaborative environment.

This role involves leading a software engineering team, driving technical direction, mentoring engineers, and overseeing web application development.

The Senior Software Engineer will impact the architecture and development of a new platform, building scalable solutions and enhancing technical practices in a collaborative environment.

Lead software engineering efforts for the Proton platform, focusing on system design, mentorship, and innovative drug discovery projects. Collaborate with cross-disciplinary teams to enhance engineering processes and standards within a minimalist organizational structure.

The Senior Software Engineer will enhance Attentive's event streaming platform, architect high-throughput systems, improve tools for product teams, and tackle complex distributed challenges. Responsibilities include collaborating on messaging systems and modernizing the architecture.

As a Senior Software Engineer, you'll build and optimize our algo trading platform, requiring expertise in both frontend and backend systems, high throughput design, and experience with trading systems.

The role involves architecting scalable backend systems and data pipelines, providing technical leadership, and ensuring best practices in software development.