Full Stack Developer Jobs in Connecticut, United States

WorldQuant Millennium Advisors (WMA) seeks a Full Stack Developer to build and enhance internal analytical tools and dashboard applications supporting product, platform, and business workflows. The role combines business analysis, data analytics, and web development to create scalable, user-friendly internal applications.

Our startup seeks an experienced Full-Stack Engineer/Developer to harness big data and machine learning for impactful solutions. You’ll collaborate with founders and Y‑Combinator graduates, design features from concept to wireframe, build across the stack, write rigorous tests, and streamline deployment pipelines.

Senior IT Engineer – Full Stack Developer

As a Senior Java Full Stack Developer at Cognizant, you will design, develop, and deliver scalable cloud-native applications supporting critical business initiatives within the Digital department. Day-to-day work includes building enterprise applications with Java, Spring Boot, and Microservices, optimizing RESTful APIs and AWS-based backend services, collaborating across cross-functional teams, and mentoring junior developers.

Digital Department at Cognizant builds enterprise applications that drive business transformation. As a Senior Full Stack .NET Developer you will design, develop and maintain scalable .NET and Angular solutions on AWS, collaborating with product owners and architects to deliver new features and modernize existing systems.

Infosys is hiring a .NET Full Stack Developer with AWS Experience to serve as a Technology Consultant 2. In this role, you will contribute to requirements elicitation, facilitate software design discussions, and document design decisions to guide the technical team.

Digital team at Cognizant builds scalable enterprise applications for clients in the insurance domain. The Senior .NET Full Stack Developer Lead designs, develops, and delivers .NET Core, React, AWS, and SQL Server solutions while providing technical leadership, code reviews, and mentoring.

AI-Augmented Development team at The Hartford builds AI‑enhanced full‑stack applications to accelerate development velocity and improve code quality. The Staff Software Engineer designs, implements and ships end‑to‑end features across frontend, backend and cloud layers while integrating LLM APIs, prompt engineering and AI‑powered tools.

CVS Health is seeking a Senior Full-Stack Developer to serve as the hands-on technical anchor for its engineering team, owning architecture and critical-path development while setting technical direction and mentoring engineers. Day-to-day work centers on designing, building, and reviewing code, partnering with product, architecture, and business stakeholders to translate business goals into a technical roadmap, and maintaining high standards of code quality, security, and operational reliabilit

Travel Insured International, a Crum & Forster company, is hiring a Full Stack Software Engineer for its IT Team in Glastonbury, CT. The role focuses on building and maintaining full-stack applications using Microsoft technologies, including ASP.NET Core, .NET Core, EF Core, React, and Angular, while developing RESTful APIs and managing Azure cloud services. Day-to-day work involves collaborating with cross-functional teams, applying DevOps practices for CI/CD, working with SQL and NoSQL databas

Butterfly Network, Inc. is driving a digital revolution in ultrasound imaging and sensing with its proprietary Ultrasound-on-Chip™ semiconductor technology and software solutions. As a Principal Full Stack Engineer, you will build the critical Enterprise Clinical workflows system within the Butterfly Cloud, solving distributed systems problems, designing scalable platform-level enterprise features, and mentoring engineers.

As an Architecture Consultant 2 on the AWS Java Full Stack Architect engagement at Infosys, you will gather and analyze customer system requirements for performance, security, and scalability, then design and document scalable, secure architectures. Day-to-day work includes proposing solution architectures, evaluating technologies and tools, validating proof-of-concepts, defining integration strategies, and collaborating with development teams to resolve complex technical issues across build, de

Systems Software Engineering team at D-Wave builds core platform infrastructure, backend services, and user-facing features that enable seamless access to gate-model quantum computers. The Senior Full Stack Software Engineer designs and implements scalable, resilient systems, creates tooling for quantum processor operation, and develops modern UI components while collaborating with product managers, scientists, and engineers.

AI Accelerator team at RTX builds enterprise‑ready AI solutions on the AI Factory, a common AI infrastructure. The engineer converts AI prototypes into production‑grade microservices, integrates LLMs and other models, and implements CI/CD, observability, and secure deployment on AWS and Azure.

United Concrete Plant 1 builds precast concrete systems for infrastructure across the Northeast. As the founding engineer you will own the full stack—from data model to UI—building AI-driven tools like OCR+LLM invoice auditing, demand forecasting, and predictive maintenance.

The Senior Organization Development & Learning (ODL) Consultant at Connecticut Children's Medical Center leads multi-disciplinary projects and strategic initiatives that improve the effectiveness of leaders, teams, and the organization. Day-to-day, the role provides strategic thought-partnership to leaders on leadership development, talent management, culture building, change management, and learning; designs and delivers strategic roadmaps, learning, and development initiatives; and supports ad

Bristol Hospital's Nursing Education team drives professional growth and patient safety through innovative learning programs. The Nursing Professional Development Specialist designs and delivers curriculum, conducts needs assessments, and provides simulation training for staff.

The Development Scientist I, Analytical Development and QC at AstraZeneca in New Haven, Connecticut, supports Alexion’s biotherapeutic products by developing and optimizing release and stability methods for clinical and commercial biotherapeutics. Day-to-day work includes (U)HPLC method development, qualification, and validation; supervising and troubleshooting analytical instrumentation; authoring SOPs, method documents, and regulatory reports; and collaborating with R&D, Manufacturing, QA, and

Biologics Analytical Development team at AstraZeneca builds robust LC methods to define product quality for therapeutic proteins. The Scientist II develops, qualifies, and transfers UHPLC methods, operates instrumentation, and authors regulatory documentation while collaborating with R&D, Manufacturing, QA and QC. New Haven, CT, on-site (minimum four days per week in the office).

Analytical Development and Clinical Quality Control team at AstraZeneca Alexion drives bioassay and impurity method development for biotherapeutic products. The scientist leads qualification, validation and transfer of assays, authors regulatory submissions and SOPs, and presents technical solutions across cross‑functional groups.