User Interface Full Stack Developer Jobs in New York

About Brillio:

Brillio is one of the fastest growing digital technology service providers and a partner of choice for many Fortune 1000 companies seeking to turn disruption into a competitive advantage through innovative digital adoption. Brillio, renowned for its world-class professionals, referred to as "Brillians", distinguishes itself through their capacity to seamlessly integrate cutting-edge digital and design thinking skills with an unwavering dedication to client satisfaction.

Brillio takes pride in its status as an employer of choice, consistently attracting the most exceptional and talented individuals due to its unwavering emphasis on contemporary, groundbreaking technologies, and exclusive digital projects. Brillio's relentless commitment to providing an exceptional experience to its Brillians and nurturing their full potential consistently garners them the Great Place to Work certification year after year.

Role: - Full Stack Developer (React, Golang, Python, Java, Node.js, AWS)

Locations: Madison, NJ/Manhattan, | Greater Boston Area |South Florida Area | Greater Seattle Area 

Full-Time (Hybrid -3days)

Note: - This is a permanent hire. No Visa sponsorship is available for this role 

Job Summary
We are looking for a highly skilled Senior Full Stack Engineer to design, build, and scale customer-facing technology platforms. This role requires strong hands-on expertise across frontend and backend engineering, with the ability to deliver end-to-end solutions using modern web technologies, cloud-native services, APIs, microservices, and distributed systems. The ideal candidate brings strong engineering fundamentals, a product mindset, and the ability to independently solve complex technical problems in a collaborative, fast-paced environment.

Key Responsibilities

• Design, build, and maintain scalable full-stack applications end to end - from frontend UI to backend services, APIs, and databases - using React, TypeScript, Go, Java, Python, and Node.js.
• Build and enhance RESTful APIs, gRPC/Thrift integrations, microservices, and distributed systems supporting business-critical workflows.
• Participate in architecture reviews, technical design discussions, and code reviews; drive engineering practices across coding standards, automated testing (incl. Cypress UI regression), security, observability, and CI/CD.
• Troubleshoot complex production issues and drive improvements to reliability, performance, and user experience.
• Contribute to cloud infrastructure and deployment automation across AWS-based environments.
• Mentor junior and mid-level engineers, and collaborate closely with product managers, architects, and designers to deliver high-quality software.
• Communicate technical decisions, risks, and trade-offs clearly to stakeholders and team members.

Required Skills & Experience

Technical Experience

• Bachelor's degree in computer science, Software Engineering, or equivalent practical experience, with 5+ years of hands-on, production-grade full-stack experience.
• Strong frontend (ReactJS, TypeScript, JavaScript, hooks, reusable UI components) and backend (Go, Java, Python, or Node.js) development building APIs, services, and integrations (REST, gRPC, Thrift; Koa).
• Solid understanding of system design, distributed systems, scalability, and performance optimization.
• Working knowledge of relational (PostgreSQL, MySQL, Aurora, RDS) and non-relational (MongoDB, DocumentDB, DynamoDB, Redis) databases.
• Hands-on AWS experience (ECS, Lambda, API Gateway, S3, CloudWatch, and similar services).
• Experience with Docker, CI/CD (CircleCI), Terraform, and modern DevOps practices.
• Experience writing unit, integration, and UI tests (Jest, Cypress, or similar).
• Agile/Scrum delivery experience with strong ownership across distributed, cross-time-zone teams.
• Familiarity with AI-assisted engineering tools (Gemini, Claude Code, GitHub Copilot) to boost productivity and code quality.

Professional Skills

• Proven ability to independently own and deliver complex technical initiatives.
• Experience collaborating effectively within distributed and agile teams.
• Strong analytical and problem-solving skills.
• Excellent communication and stakeholder management abilities.
• Experience mentoring engineers and driving technical excellence across teams.

Nice to Have Skills

• Experience with Elasticsearch for search, analytics, and large-scale data retrieval.
• Knowledge of Thrift or similar RPC frameworks for service-to-service communication.
• Experience working within monorepo environments and large-scale frontend codebases.
• Familiarity with Bazel build systems.
• Infrastructure-as-Code experience using Terraform, AWS CDK, or CloudFormation.
• Experience contributing to shared UI component libraries and enterprise design systems.
• Exposure to event-driven architectures and messaging technologies such as Kafka or AWS Event Bridge.
• Experience in real estate technology, marketplace platforms, or customer-facing SaaS products.