Senior Full-stack Developer (React.js+React Native+Node.js))

Company Introduction

Codebase is a young software services company with a great pool of tech-savvy developers. We started in the spring of 2018, and have been growing aggressively. We are located in Pune, India, and serve software product companies across the globe; focusing on enterprise SaaS, eCommerce, cloud, and application development.

We are looking for a high-impact Full Stack Engineer who can build, scale, and own modern web and mobile applications end-to-end. You will work across React (Web), React Native (iOS & Android), and Node.js backend systems, contributing to product decisions, system architecture, and performance optimization.

This role is ideal for someone who enjoys building production-ready systems, cares about clean code, and understands how scalable products are built and operated in real-world environments.

Key Responsibilities:

Frontend (Web & Mobile)

• Design and build responsive web applications using React

• Develop and maintain cross-platform mobile apps using React Native for iOS and Android

• Translate product requirements and UX designs into high-quality, maintainable UI components

• Optimize applications for performance, accessibility, and scalability

• Manage application state effectively and ensure smooth user experiences

Backend & APIs

• Build and maintain Node.js backend services

• Design and implement REST APIs and real-time communication using WebSockets or Server-Sent Events (SSE)

• Handle authentication and authorization using JWT and OAuth2

• Ensure secure data handling and follow best practices for API design

• Collaborate closely with frontend teams to deliver seamless integrations

Database & Data Management

• Design, optimize, and maintain PostgreSQL databases

• Write efficient queries, manage migrations, and ensure data integrity

• Understand indexing, performance tuning, and schema design

Infrastructure & DevOps

• Containerize applications using Docker

• Set up and maintain CI/CD pipelines using GitHub Actions

• Support smooth deployments across environments (dev, staging, production)

• Work with modern development workflows and version control practices

Observability & Reliability

• Implement and monitor application logs, metrics, and error tracking

• Diagnose and resolve production issues proactively

• Improve system reliability, performance, and uptime through observability insights

Collaboration & Ownership

• Participate in code reviews and architectural discussions

• Work closely with product managers, designers, and QA teams

• Take ownership of features from design to production

• Mentor junior developers (for senior-level candidates)

Requirements:

• 3–9 years of experience in full-stack development
• Strong hands-on experience with React (Web)
• Proven experience withReact Native (iOS & Android)
• Solid backend experience using Node.js
• Experience building REST APIs and real-time systems (WebSockets/SSE)
• Strong knowledge of PostgreSQL
• Hands-on experience with JWT and OAuth2 authentication
• Experience with Docker and CI/CD pipelines (GitHub Actions)
• Familiarity with logging, monitoring, and error tracking tools
• Strong understanding of software engineering best practices

Nice to have:

• Exposure to system design and scalable architectures
• Experience handling production incidents and performance tuning
• Knowledge of testing frameworks and automated testing
• Prior experience in agile or fast-paced startup environments
  

Soft Skills

• Excellent problem-solving and analytical skills.
• Strong communication and interpersonal abilities.
• Ability to work independently and as part of a team.
• Proactive and eager to learn new technologies.