Backend Developer Jobs in Connecticut, United States

Infosys is hiring a Java Backend Developer (Technology Consultant 1) to support the full SDLC lifecycle across multiple U.S. locations including Boston, Hartford, Jersey City, New York, Raleigh, and Richardson. Day-to-day work involves capturing stakeholder requirements through interviews and workshops, participating in design discussions, developing and documenting code for new applications, executing test plans, supporting feature integration, and monitoring and troubleshooting live applicatio

Oxbridge Health, a healthcare startup focused on episode pricing and analytics, seeks a Senior Backend Engineer to drive transparency in the healthcare market. Based in Norwalk, CT, this full-time role involves designing high-scale serverless systems using AWS and Python while owning services end-to-end from architecture to deployment.

Backend Capability team at CVS Health drives the backend platform, API ecosystem, and third‑party integration layer for its SaaS health suite. The role defines API standards, steers a scalable event‑driven microservices architecture, and leads integration strategy with EHR/EMR systems and emerging AI model APIs.

Gartner IT seeks a hands-on technical leader to guide a multi-disciplinary development team building and maintaining the core platform for personalized email and notifications delivery, driving digital engagement with clients. Day-to-day, you will lead and mentor the team, architect scalable solutions, collaborate with product partners on new features, and leverage AI/ML platforms to optimize engagement and retention.

iCapital Platform Engineering team builds the core services powering the iCapital investment platform. As a Backend Software Engineer, Assistant Vice President, you will design and implement high‑performance cloud‑native APIs using Python, Scala, FastAPI, and ZIO, and develop comprehensive unit and integration tests.

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.

Commercial Scorecard group leads the design, development, and governance of commercial credit risk models used for portfolio monitoring, regulatory compliance, and capital management. The Senior Manager oversees model lifecycle, directs a team of quantitative analysts, and partners with technology and risk committees to integrate and validate models.

Alexion’s External Analytical Development and Quality Control group seeks a Development Scientist II to maintain quality standards in GMP laboratories. The role involves owning laboratory investigations, ensuring compliant closure of out-of-specification results, and collaborating with internal teams for product release.

Integrated Resources, Inc. seeks an experienced iOS developer to build high‑quality applications in a fast‑paced environment. The role requires strong Objective‑C/Swift skills, API integration, JSON handling, and debugging expertise.

Front Office Development Team at WorldQuant builds next‑generation trading platforms to generate high‑quality predictive signals. The role writes low‑latency, high‑throughput C++ code, implements mission‑critical trading infrastructure, and collaborates with portfolio managers to deploy new systems.

Infosys is hiring a Java Developer (Technology Consultant 1) in Hartford, CT to support software development across the SDLC lifecycle. Day-to-day work includes capturing stakeholder requirements, participating in design discussions, developing and documenting code, executing test plans, supporting feature integration, and monitoring and troubleshooting live applications.

First Student’s Manager in Development program in Danbury, CT prepares future leaders through hands-on operational experience and mentorship. Participants rotate across departments like dispatch, safety, and finance to learn location management skills.

Cedar Gate Technologies, an IQVIA business, enables value‑based care through a unified analytics and payment platform. As Development Manager you will provide technical leadership and hands‑on contribution to patient experience and digital health applications, guiding architecture, code quality, and team mentorship.

Integrated Resources, Inc. is a leading staffing firm in the tri‑states region, known for delivering top‑quality IT talent. We are seeking a seasoned Java Developer to lead application development projects.

Development Team at Sandy Hook Promise supports fundraising operations through Salesforce CRM, gift processing, and reporting. The Associate, Development manages donor data, generates reports, and assists with moves management and donor communications.

Systematic Trading organization at Trexquant builds and scales the analytics platform supporting research, portfolio construction, risk management, and trading across multiple asset classes. The Quantitative Developer designs and implements high‑performance C++ systems for market data infrastructure, backtesting, risk and PnL analytics, and developer tools, collaborating closely with researchers and traders.

Advancement team at Greater Hartford Gives Foundation leads fundraising strategy and donor portfolio management. The Director oversees major gift cultivation, guides a team of Development Officers, and drives sustainable fundraising operations across the foundation’s donor base.

Capgemini Mainframe Development team drives large‑scale modernization and transformation programs for enterprise clients. The Senior Mainframe SME leads code analysis and reverse engineering, defines strategies, and provides technical guidance across COBOL, CICS, DB2, IMS and related technologies.