Senior MERN Stack Engineer

About the Company

Our client is a leading technology company based in Newark, CA, delivering innovative software solutions and building high-quality, scalable products. They partner with forward-thinking organizations to solve complex engineering challenges and drive impact across the industry.

About the Role

We are seeking a Senior MERN Stack Engineer to join our client’s engineering team. This role is ideal for a well-rounded full-stack engineer with a strong eye for frontend design, expertise in backend development, and experience designing performant database architectures. You will contribute to high-impact projects in a fast-paced, collaborative environment.

Key Responsibilities

Design and develop responsive, pixel-perfect UI components using React.js with a strong focus on user experience and frontend performance

Build and maintain scalable RESTful and GraphQL APIs using NestJS and Java (Spring Boot)

Architect and optimize relational and non-relational databases including MongoDB, PostgreSQL, and MySQL

Translate UI/UX designs and wireframes into clean, maintainable, production-ready code

Participate in code reviews, technical design sessions, and sprint planning

Collaborate cross-functionally with product managers, designers, and QA engineers

Mentor junior engineers and uphold engineering best practices and clean code principles

Ensure application security, scalability, and reliability across all layers of the stack

Required Skills & Experience

10+ years of professional software engineering experience across the full stack

Frontend: React.js, Redux/Zustand, TypeScript, HTML5, CSS3, Tailwind or Material UI

Backend: NestJS (Node.js), Java (Spring Boot / Spring MVC)

Databases: MongoDB, PostgreSQL, MySQL — schema design, indexing, query optimization

APIs: REST, GraphQL, JWT/OAuth 2.0 authentication and authorization

Proficiency with Git, CI/CD pipelines, and agile/scrum methodologies

Strong command of software design patterns, SOLID principles, and clean architecture

Nice to Have

Experience with AWS, GCP, or Azure cloud services

Familiarity with Docker, Kubernetes, or containerized deployments

Microservices architecture experience

Prior work in a high-growth startup or enterprise product environment

Work Arrangement

This is a fully on-site role based at our client’s office in Newark, CA. Candidates must be locally available and willing to commute daily.

We are unable to provide visa sponsorship for this role at this time.

From Tangerine Search:

Tangerine Search is an equal opportunity agency that values diversity. We do not discriminate on the basis of race, religion, color, national origin, sex, gender, gender expression, sexual orientation, age, marital status, veteran status, or disability status. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform crucial job functions, and to receive other benefits and privileges of employment.