Sr. Fullstack Developer - UI/UX -Test Driven Development (TDD) and Behavior Driven Development (BDD)

VTekis Consulting LLP; New York (NY); On-site; USD 120,000 - 180,000; Full time

Job summary

VTekis Consulting LLP is seeking a Senior Fullstack Developer with a strong UI/UX focus to contribute to high‑quality software through test‑driven development. The role emphasizes collaboration with design and product teams to deliver polished features.

You will work across front‑end and back‑end stacks, owning components from concept through production, ensuring responsive interfaces and robust APIs in an agile environment.

Qualifications

• Hands-on experience with React.js (or Angular, Vue.js).
• Proficiency in HTML5, CSS3, and responsive design principles.
• Experience with state management (Redux, Context API, NgRx, Vuex, Pinia).
• Knowledge of frontend testing frameworks (Jest, React Testing Library, Jasmine, Karma, Vitest).
• Understanding of component-based architecture and design patterns.
• Experience with RESTful API integration and asynchronous data handling.
• Working knowledge of at least one backend technology: Node.js, Java (Spring Boot), Python, or .NET.
• Ability to design, create, and consume REST APIs.
• Strong working knowledge of relational databases (SQL Server, PostgreSQL, Oracle).
• Understanding of NoSQL databases (MongoDB, DynamoDB) is a plus.
• Good understanding of authentication concepts and implementation (OAuth2, JWT, API keys).
• Familiarity with Test Driven Development (TDD) and backend testing frameworks.

Skills

React.js

HTML5

CSS3

Responsive design

State management

Frontend testing

REST APIs

Backend tech

OAuth2/JWT

CI/CD

Tools

Jest

React Testing Library

Jasmine

Karma

Vitest

Git

GitHub

GitLab

Job description

Sr. Fullstack Developer - UI/UX - Test Driven Development (TDD) and Behavior Driven Development (BDD)

Contract

Required Skills and Qualifications

Frontend Skills (Primary Focus)

• Hands‑on experience with React.js (or Angular, Vue.js)
• Proficiency in HTML5, CSS3, and responsive design principles
• Experience with state management (Redux, Context API, NgRx, Vuex, Pinia)
• Knowledge of frontend testing frameworks (Jest, React Testing Library, Jasmine, Karma, Vitest)
• Understanding of component-based architecture and design patterns
• Experience with RESTful API integration and asynchronous data handling
• Working knowledge of at least one backend technology: Node.js, Java (Spring Boot), Python, or .NET
• Ability to design, create, and consume REST APIs
• Strong working knowledge of relational databases (SQL Server, PostgreSQL, Oracle)
• Understanding of NoSQL databases (MongoDB, DynamoDB) is a plus
• Good understanding of authentication concepts and implementation (OAuth2, JWT, API keys)
• Familiarity with Test Driven Development (TDD) and backend testing frameworks

General Skills

• Good understanding of microservices architecture and distributed systems
• Strong problem‑solving and debugging skills across the full stack
• Ability to work effectively in a team‑oriented, agile development environment
• Good verbal and written communication skills
• Experience with version control (Git, GitLab, GitHub)
• Understanding of CI/CD concepts and modern deployment

All your information will be kept confidential according to EEO guidelines.