Senior Backend Engineer

Peoplebox.ai; Bengaluru; On-site; INR 8,000,000 - 12,000,000; Full time

Job summary

Peoplebox.ai, located in Bengaluru, India, is seeking a skilled Developer to join our team. The ideal candidate will have over 3 years of experience with Ruby on Rails, JavaScript, and Python, along with strong skills in API development and relational databases like MySQL or PostgreSQL. Responsibilities include building and maintaining MVC applications, optimizing jobs with Sidekiq, and working collaboratively with product managers. Join us in our innovative, fast-paced environment focused on performance management solutions.

Qualifications

• 3+ years of production-grade experience with Ruby on Rails, JavaScript, and Python.
• Hands-on experience with Sidekiq and/or Delayed Job for asynchronous processing.
• Expertise in MySQL or PostgreSQL schema design and query optimisation.
• Comfort with designing and documenting RESTful APIs.

Responsibilities

• Build and maintain MVC-based Ruby on Rails applications and RESTful APIs.
• Implement and optimize asynchronous jobs using Sidekiq and/or Delayed Job.
• Leverage Redis for caching and job management.
• Architect and iterate on scalable, decoupled systems.

Skills

Ruby on Rails

JavaScript

Python

Redis

Git

Docker

Tools

MySQL

PostgreSQL

AWS

Job description

Peoplebox.ai is a fast-growing, YC-backed start-up building an AI-powered Performance Management platform. We help modern companies drive real business outcomes by aligning people, goals, and feedback all inside everyday tools like Slack, Teams, and email.

Responsibilities

• Build and maintain MVC-based Ruby on Rails applications and RESTful APIs, ensuring code is clean, modular and well-documented.
• Implement and optimize asynchronous jobs using Sidekiq and/or Delayed Job to support long-running or high-volume tasks.
• Leverage Redis for caching, session storage and job management to deliver fast, responsive user experiences.
• Design efficient schemas, write optimised SQL (MySQL or PostgreSQL), and apply indexing and normalisation best practices.
• Architect and iterate on scalable, decoupled systems whether monolith or microservices, balancing performance, reliability and maintainability.
• Define, document and consume secure, versioned RESTful endpoints that serve both internal and external clients.
• Write and maintain unit/integration tests (RSpec or Minitest), and contribute to CI/CD pipelines for automated builds, tests and deployments.
• Partner with product managers, designers and front-end engineers to translate business requirements into technical solutions. Provide clear, proactive updates on progress, challenges and trade-offs.

Requirements

• Ruby on Rails, JavaScript, Python: 3+ years of production-grade experience, strong grasp of MVC conventions and Rails best practices.
• Background Jobs: Hands-on with Sidekiq and/or Delayed Job for asynchronous processing.
• Redis: Proven use for caching, session storage, pub/sub or job queues.
• Relational Databases: Expert in MySQL or PostgreSQL schema design, indexing, and query optimisation.
• API Development: Comfort designing, documenting and securing RESTful APIs.
• System Design: Ability to decompose complex problems, build modular services (microservices a plus) and make trade-off decisions.
• Version Control: Daily use of Git, collaborating via GitHub or GitLab.
• Containerization: Familiarity with Docker for development and production consistency.
• Cloud Services: Working knowledge of AWS (e.g., EC2 S3) or similar.

Nice-to-Have

• Proven microservices or event-driven architecture experience.
• Experience with infrastructure as code (Terraform, CloudFormation).
• Previous work in fast-paced, product-oriented start-ups.