Senior Software Engineer - Node Js

Devsinc; Lahore; On-site; PKR 2,400,000 - 4,200,000; Full time

Job summary

Devsinc, LLC seeks a Senior Full-Stack Engineer to architect, build, and scale modern web apps using Node.js, React/Next.js, Angular, and MongoDB. You will own features end-to-end, design APIs, and shape technical direction across product and platform teams.

You will mentor engineers, drive AI-enabled features, implement robust security and testing, and lead delivery in a fast-paced environment.

Qualifications

• Expert-level JavaScript and TypeScript with strong HTML5/CSS3 and responsive design.
• Production experience with Node.js (Express/NestJS) and MongoDB; exposure to PostgreSQL or MySQL.
• Strong hands-on experience with React (Next.js preferred) and Angular.
• Solid understanding of system design, microservices, caching (Redis), and messaging (Kafka, RabbitMQ, SQS).
• Cloud experience (AWS, GCP, or Azure) with Docker; CI/CD pipelines.
• Testing habits: unit, integration, and E2E using Jest, Playwright, or Cypress.
• Authentication and security: OAuth 2.0, OIDC, JWT, OWASP.
• Excellent communication; able to present decisions to technical and non-technical audiences.
• Proven leadership in development efforts and delivering on deadlines.
• Self-starter with ownership in fast-paced environments.

Responsibilities

• Architect, build, and scale full-stack web apps using Node.js, Express/NestJS, MongoDB, React/Next.js, and Angular.
• Lead feature development end-to-end from design and estimation through deployment and support.
• Design and own RESTful and GraphQL APIs, including BFF layers and API contracts.
• Build and maintain shared component libraries and design systems (Tailwind, Storybook); translate Figma designs to UI.
• Deploy and operate services on AWS, GCP, or Azure using Docker, Kubernetes, serverless, and CI/CD.
• Integrate AI features (LLM assistants, semantic search, RAG) with AI/ML teams.
• Use AI-assisted tools to speed up delivery while keeping quality.
• Mentor junior/mid engineers; conduct code reviews and pair programming.
• Present technical decisions clearly to stakeholders and leadership.
• Participate in on-call rotations and incident response.

Skills

JavaScript

TypeScript

HTML5

CSS3

Responsive design

Node.js

MongoDB

PostgreSQL/MySQL

React

Next.js

Angular

Microservices

Redis

Kafka

RabbitMQ/SQS

AWS

GCP

Azure

Docker

Kubernetes

CI/CD

Jest/Playwright/Cypress

OAuth/OIDC/JWT

Communication

Leadership

Tools

Docker

Kubernetes

Terraform

AWS CDK

Datadog

Grafana

Sentry

Job description

Job Description:

• Architect, build, and scale full-stack web applications using Node.js, Express/NestJS, MongoDB, React/Next.js, and Angular
• Lead feature development end-to-end, from technical design and estimation through deployment and production support
• Design and own RESTful and GraphQL APIs, including BFF (Backend-for-Frontend) layers, and shape API contracts with product and platform teams
• Build and maintain shared component libraries and design systems (Tailwind, Storybook) and turn Figma designs into pixel-perfect, accessible UI
• Deploy and operate services on AWS, GCP, or Azure using Docker, Kubernetes, serverless functions, and CI/CD pipelines
• Integrate LLM-powered features such as AI assistants, semantic search, and RAG pipelines into products alongside AI/ML engineers
• Use AI-assisted development tools (Claude Code, Cursor, GitHub Copilot) to speed up delivery while keeping quality high
• Mentor and guide junior and mid-level engineers through code reviews, pair programming, and technical direction
• Present technical decisions, trade-offs, and progress clearly to stakeholders, clients, and leadership
• Take part in on-call rotations and incident response for production systems

• 3 to 6 years of professional software engineering experience, with strong full-stack delivery
• Expert-level JavaScript and TypeScript, plus strong HTML5, CSS3, and responsive design
• Production experience with Node.js (Express or NestJS) and MongoDB, with exposure to PostgreSQL or MySQL
• Strong hands-on experience with React (Next.js preferred) and working proficiency in Angular
• Solid understanding of system design, microservices, caching (Redis), and message queues (Kafka, RabbitMQ, SQS)
• Hands-on cloud experience (AWS, GCP, or Azure), including containerization with Docker
• Strong testing habits: unit, integration, and E2E testing with Jest, Playwright, or Cypress
• Understanding of authentication and security standards: OAuth 2.0, OIDC, JWT, and OWASP best practices
• Excellent communication skills, with the ability to explain and defend technical choices to both technical and non-technical audiences, represent the team in client and stakeholder meetings, and confidently showcase our technology
• Proven ability to lead development efforts, own deliverables, and drive a team toward deadlines
• Self-starter with strong ownership, prioritization, and attention to detail in a fast-paced environment

Nice to have

• React Native or Expo experience shipping apps to the App Store and Google Play
• Experience integrating LLM APIs (OpenAI, Anthropic, Gemini) or building RAG and vector search features (Pinecone, pgvector)
• Infrastructure as Code (Terraform, AWS CDK) and observability tools (Datadog, Grafana, Sentry)
• Experience with WebSockets and real-time systems
• AWS, GCP, or Azure certifications
• Startup or SaaS product experience, or client-facing consulting experience
• Open-source contributions or a strong public GitHub portfolio

Requirements: