Sr Full Stack Engineer

Summit, NJ Hybrid Role Compensation: $75 - $80 per hour About The Role Our client, a Fortune 500 Consumer Packaged Goods (CPG) company, is seeking a Senior Full Stack Engineer to serve as the technical anchor and lead for automation tools within the product development team. This hybrid role, based in Summit, NJ, offers high-impact engagement and direct partnership with business and technology leadership. You will own end-to-end full stack development, including standing up and managing cloud infrastructure (compute and database), designing and connecting APIs, and building frontend interfaces with React. The role requires hands-on expertise in GenAI prompt engineering to ensure consistent, low-hallucination AI-assisted workflows. You will guide architecture and approach, integrating backend and frontend systems, and collaborate closely with cross-functional teams to deliver impactful solutions. What You'll Do • Own end-to-end delivery across backend, middle tier, and frontend for automation tool initiatives • Stand up and manage cloud-based infrastructure (compute and database) to support application development (Azure preferred, AWS acceptable) • Design, build, and connect APIs to enable application functionality • Develop and integrate frontend interfaces (React preferred) with backend services • Utilize Python for data manipulation and processing tasks • Apply GenAI prompt engineering practices to ensure consistent, reliable model outputs and minimize hallucinations • Act as the technical anchor for the build, guiding architecture and technical approach for the product development team • Partner directly with business and technology leadership to deliver impactful solutions What You Bring • 5+ years of full stack engineering experience with strong breadth across backend, middle tier, and frontend • Demonstrated experience building and connecting APIs • Experience standing up cloud-based infrastructure (compute and database) for application development — Azure preferred, AWS acceptable • Frontend development experience, React preferred • Python experience for data manipulation and processing • Hands-on GenAI prompt engineering experience, including techniques for producing consistent model outputs and mitigating hallucinations • Proven ability to work end-to-end, from infrastructure through interface What's In It For You • High-impact engagement with a global Fortune 500 Consumer Health company • Direct partnership with business and technology leadership • Opportunity to lead technical architecture and approach for automation tools Disclaimer Brooksource, Medasource, and Calculated Hire are part of the Eight Eleven Group family of companies and operate under Eight Eleven Group, LLC. All employees receive the same benefits, policies, and terms of employment. Eeo We are committed to creating an inclusive environment for all employees and applicants. We do not discriminate on the basis of race, color, religion, creed, sex, sexual orientation, gender identity or expression, national origin, ancestry, age, disability, genetic information, marital status, military or veteran status, citizenship, pregnancy (including childbirth, lactation, and related conditions), or any other protected status in accordance with applicable federal, state, and local laws. Benefits & Perks Calculated Hire offers competitive medical, dental, vision, Health Savings Account, Dependent Care FSA, and supplemental coverage with plans that can fit each employee’s needs. We offer a 401k plan that includes a company match and is fully vested after you become eligible, paid time off, sick time, and paid company holidays. We also offer an Employee Assistance Program (EAP) that provides services like virtual counseling, financial services, legal services, life coaching, etc. Pay Disclaimer The pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.