Top Senior Software Engineer Jobs in Hartford, CT

Lead architecture and scaling of cloud-native infrastructure to support large AI workloads. Mentor engineers, decompose complex systems, design foundational platform services, and collaborate with product, research, and security teams to ensure secure, performant, and highly available GPU/ML infrastructure.

Technical leader for Platform & Infrastructure building scalable, resilient cloud-native systems to support large AI workloads. Define architecture, mentor engineers, solve systemic infrastructure bottlenecks, design foundational platform services, and collaborate cross-functionally to ensure secure, high-performance operations.

Design, build, and optimize GraphQL APIs, gRPC services and SQL queries for a promotions engine. Own complex technical problems, improve production scalability and performance, set up DataDog monitoring, participate in on-call rotations, mentor engineers, and deliver end-to-end features in an agile environment.

Own architecture, development, and reliability of ecommerce web applications (Symfony storefront and Laravel back-office). Lead front-end JavaScript/CSS direction, optimize SQL schemas/queries, improve observability and incident response, reduce legacy technical debt, establish AI-assisted development workflows, mentor engineers, and drive end-to-end delivery of scalable customer-facing features.

Build and ship full‑stack product features on a Python/Flask backend and React frontend. Design REST/GraphQL APIs, work with SQLAlchemy and relational data models, integrate LLM/AI features, use async task queues (Celery), and collaborate with product, design, and engineers to deliver reliable, well-tested features end-to-end.

Design, build, and architect stablecoin and crypto infrastructure; integrate DEXs, DeFi protocols, and wallet providers; develop smart contract interactions; expand crypto product functionality and asset selection; collaborate cross-functionally; establish crypto development standards and ensure security and reliability for large-scale user experiences.

Design and develop software to onboard hardware accelerators and optimize storage datapaths for Azure Storage. Drive design, debugging, performance tuning, operations, and cross-team collaboration across research, compute, and storage to improve throughput, scale, reliability, and observability.

Build and operate AlphaSense's identity platform across user management, authentication, and authorization. Design scalable RBAC/ABAC/ReBAC systems, integrate authentication patterns (OAuth/OIDC/SAML), implement SCIM provisioning, and expose GraphQL/gRPC/REST APIs. Partner with security on SOC2/GDPR compliance, drive platform roadmap, champion testing, observability, and reliability, and operate autonomously from North America in close collaboration with the Helsinki team.

Design, build, and operate high-performance Places/Search API services; drive architecture and scalability decisions; improve code quality and operational standards; mentor engineers; run experiments and telemetry-driven analysis; participate in feature delivery, on-call rotation, and customer-facing collaboration with automotive and mapping partners.

Design, implement, and maintain scalable Java-based software solutions. Collaborate across the SDLC with stakeholders and development teams, integrate DevOps and CI/CD practices, support operational tasks, ensure security and performance, drive feature development, conduct code reviews, and stay current with emerging technologies.

The Senior Software Engineer will modernize USPS shipping technology, refactor legacy systems for cloud integration, and develop high-performance services using Go, while collaborating with teams and addressing production challenges.

The Staff Software Engineer will develop customer-facing web applications, lead technical design, improve system performance, and mentor other engineers while exploring new technologies. The role focuses on enhancing healthcare outcomes through innovation.

The Staff Software Engineer will develop and scale platform experiences, focusing on user onboarding, deploying robust APIs, and utilizing analytics for optimization.

Lead frontend architecture and execution for high-traffic Search features using React and TypeScript. Build map-based visualizations, optimize client-side performance and state management, collaborate with product/design/backend, conduct code reviews, mentor peers, and ship production-grade web features.

Design and build full-stack planning systems: geospatial placement and routing algorithms, automated permitting integrations, deployment/customer dashboards, backend services in TypeScript/Node.js with SQL, and containerized microservices on Kubernetes using Docker and Helm.

Design, scale, and maintain high-throughput backend data pipelines for real-time asset ingestion. Optimize databases, pub/sub systems, and distributed storage; lead migrations to Go while keeping TypeScript services performant. Collaborate cross-functionally, mentor engineers, perform code reviews, and deliver production-grade pipeline features under heavy traffic.

Lead frontend architecture and implement responsive React/TypeScript web applications and low-latency live video playback. Optimize UI performance, design client-server APIs to cloud microservices, and collaborate with product, design, and backend teams to deliver real-time, high-traffic video features.

Lead technical strategy and architecture for a large-scale Content Platform that powers marketing campaigns. Solve ambiguous cross-team problems, design scalable backend and AI-driven systems, mentor senior engineers, and partner with product, design, and marketing to drive execution and engineering standards across the org.

The Staff Engineer will lead the Systems team, design scalable cloud infrastructure, optimize data pipelines, and ensure platform reliability and security.

Design, build, and maintain scalable, secure cloud infrastructure and SRE practices. Implement IaC, Kubernetes/Helm deployments, CI/CD pipelines, monitoring/observability, automation, security/compliance, capacity planning, and mentor junior engineers to ensure reliability and performance.

Provide technical leadership across the simulation platform: define architecture, drive feature delivery, debug complex multi-module issues, conduct code reviews, collaborate on QA/CI/CD, and mentor engineers to modernize and maintain the legacy Windows desktop codebase.

Design and develop scalable software solutions, lead architecture discussions, troubleshoot issues, and mentor team members while applying best engineering practices.

Design, build, and operate high-concurrency distributed microservices for spam detection and email delivery. Lead architecture, CI/CD, cloud-native (GCP) operations, telemetry, and AI-assisted/agentic workflows. Integrate LLMs for detection and diagnostics, mentor engineers, and drive reliability, performance, and automation across production systems.

The Lead Software Engineer will design and maintain scalable software solutions, provide technical guidance, mentor junior engineers, and ensure software quality while collaborating with cross-functional teams.

Design, implement, and optimize core frontend, backend, and model-integration components. Drive engineering direction, ship and scale LLM-powered applications, build robust APIs and streaming systems, establish CI/CD and instrumentation, and deliver production-grade agentic workflows with measurable reliability and performance.