MERN Engineer

Senior MERN stack developer needed for our client’s growing team, based in Livingston, NJ This position is onsite 3x a week and will include an IN PERSON INTERVIEW. Must be local C2C or W2 hourly. Long term contract. Our Fintech client is seeking a strong, backend-focused MERN Engineer with deep experience in Node.js. This role is heavily emphasizing APIs, serverless architecture, and cloud-native services. Key Responsibilities: • Design, build, and maintain scalable RESTful APIs supporting high-volume client integrations. • Develop backend services using Node.js and Python, with a strong focus on performance, security, and reliability. • Build and support AWS serverless solutions, including: • Lambda functions • Step Functions for workflow orchestration and service coordination • Contribute to a platform that enables self-service API access for hundreds of external consumers. • Work independently to deliver features end-to-end in a fast-paced, results-driven environment. • Collaborate across teams and participate in cross-training initiatives to broaden technical expertise. • Support and contribute to Generative AI initiatives, tools, or integrations as part of ongoing platform evolution. Qualifications: • 7+ years of backend development experience, Node.js development, including strong experience in MongoDB. • Expertise in API development • Knowledge of Python, and strong object-oriented design • SQL and NoSQL data stores • Hands-on experience with the MERN stack, with a clear preference for backend-heavy development. • Solid hands-on experience with AWS Lambda and serverless architectures. • Ability to work independently, manage ambiguity, and deliver consistently in a high-velocity environment. • Strong communication skills and a collaborative, growth-oriented mindset. • Bachelor's degree in Computer Science, Engineering or related discipline