Back End Developer

Big Happy; India; On-site; INR 800,000 - 1,400,000; Full time

Job summary

BIG Happy Inc. in India is seeking a skilled Back End Developer to design and maintain high‑performance, scalable services. You will work with Golang or Node.js, build on AWS, and ensure robust data handling and low‑latency responses.

Collaborate with frontend teams, optimize SQL databases, implement CI/CD, and profile code to remove bottlenecks. Requires 2–5 years of experience, strong problem solving, and a passion for distributed systems.

Qualifications

• Proven back-end development experience with Golang or Node.js.
• Strong hands-on experience with AWS (EC2, S3, RDS, etc.).
• Proficiency in SQL and relational database design.
• Linux scripting and system administration.
• CI/CD workflows with Jenkins, GitLab CI, or CircleCI.
• Deep understanding of concurrency and race-condition debugging.
• Experience profiling and tuning for performance.
• Solid foundation in data structures and algorithms.
• Ability to troubleshoot complex issues in a fast-paced environment.

Responsibilities

• Design, implement, and maintain back-end services using Golang or Node.js.
• Build, manage, and scale systems on AWS infrastructure.
• Develop and optimize complex SQL databases and queries.
• Collaborate with front-end and cross-functional teams to deliver scalable solutions.
• Write clean, well-documented, and reusable code.
• Contribute to CI/CD pipelines and automated testing.
• Resolve race conditions and improve concurrency performance.
• Profile and tune code for low latency and reliability.
• Apply advanced data structures/algorithms to performance-sensitive tasks.
• Continuously improve backend infrastructure by removing bottlenecks.

Skills

Golang

Node.js

AWS

SQL

Linux

CI/CD

Concurrency

Profiling

Algorithms

Job description

Back End Developer

Application Deadline: 8 August 2026

Department: Tech Dev

Employment Type: Full Time

Location: India

Reporting To: Mukesh Godara

Description

We are looking for a talented and motivated Back-end Developer to join our team. As a Back-end Developer, you will play a key role in building and maintaining high-performance, scalable, and distributed systems. You will be responsible for creating efficient, reliable, and scalable backend services that power our applications and provide excellent user experiences.

The ideal candidate should have hands‑on experience with modern back-end technologies, strong problem‑solving skills, and a deep understanding of distributed data systems, performance optimization, and concurrency. If you’re passionate about solving complex technical challenges and optimizing back‑end systems, we’d love to hear from you!

NOTE:

• Preferred experience range: 2-5 Years
• Candidates must be open to work within USA time zones EST/EDT and PST/PDT hours.

Key Responsibilities

Responsibilities:

• Design, implement, and maintain back‑end services using Golang or Node.js.
• Build, manage, and scale systems on AWS infrastructure.
• Develop and maintain complex SQL databases, ensuring optimal query performance and database design.
• Work closely with front-end developers and other team members to deliver seamless and scalable solutions.
• Write and maintain efficient, well documented, and reusable code.
• Contribute to CI/CD pipelines for automated testing and deployment processes.
• Resolve race conditions, concurrency issues, and improve overall system performance through efficient solutions.
• Profile and optimize code for performance, scalability, and low‑latency operations.
• Leverage your deep understanding of advanced data structures and algorithms to tackle complex problems.
• Continuously improve the backend infrastructure by identifying bottlenecks and optimizing system reliability.

Skills, Knowledge and Expertise

Requirements:

• Proven experience in Back-end development, specifically with Golang or Node.js.
• Strong hands‑on experience with AWS (e.g., EC2, S3, RDS, etc.).
• Proficiency in writing and optimizing SQL queries and working with relational databases.
• Solid experience with the Linux operating system, including scripting and system administration.
• Expertise in CI/CD workflows, including tools like Jenkins, GitLab CI, or CircleCI.
• Deep understanding of concurrency, with a proven ability to identify and resolve race conditions using effective synchronization techniques.
• Experience in profiling and tuning code to ensure optimal system performance and efficiency.
• Strong foundation in data structures and algorithms, with the ability to implement complex algorithms to solve performance‑sensitive tasks.
• Ability to troubleshoot complex issues and provide innovative solutions in a fast‑paced, collaborative environment.

Preferred Skills (Bonus)

• Familiarity with GO, C++ and OOPs based design.
• Familiarity with Postgres databases.
• Experience in developing high‑performance systems in multi‑cloud environments.
• Knowledge of writing tests in Golang, including unit and integration testing using tools like the native testing package, Testify, and Gomock.
• Knowledge of AI models and LLMs, including API integration with tools like OpenAI or Anthropic for building AI‑powered backend features and services.
• Knowledge of database scaling strategies, including read replicas, sharding, partitioning, load balancing, caching mechanisms, and high‑availability configurations for handling large‑scale data.

Benefits

Flexible Work & Time-Off Culture: At BIG Happy Inc. we believe that great work comes from a well balanced life. Our flexible time‑off policy and work‑from‑home options empower employees to manage their schedules effectively, recharge when needed, and maintain a healthy work‑life balance without compromising productivity.

Comprehensive Health & Family Support: We prioritize the well‑being of our team and their families. Our plans provide parental support policies, including maternity benefits, ensure that employees feel supported during important life stages.

Performance-Driven Rewards & Growth: We recognize and reward impact. Through performance bonuses and incentive programs, employees are acknowledged for their contributions and achievements, fostering a motivating environment that supports both personal and professional growth.

Relocation & Seamless Transition Support: Joining us from a different location? We’ve got you covered. Our relocation support and reimbursement policies are designed to make your transition smooth and stress‑free, allowing you to focus on settling into your role and new environment.

Inclusive Culture & Collaborative Environment: Our workplace thrives on collaboration, inclusivity, and engagement. From cross‑functional 1:1s to team building activities like movie outings, events, and office get‑togethers, we ensure every team member feels connected, valued, and empowered to contribute meaningfully.