
Role & Responsibilities
Take end-to-end ownership of critical backend services — from architecture and development to deployment and scale.
Design systems for performance, reliability, and observability. Identify bottlenecks and eliminate them proactively.
Collaborate with product and design to deeply understand user pain points and build the right solutions.
Work independently and own complex modules with minimal oversight.
Champion clean, maintainable code and help set a high bar for engineering excellence across the team.
Stay up-to-date with new tools, technologies, and backend trends — and bring the best ideas into our stack.
Ideal Candidate
2+ years of backend development experience, ideally with Kotlin and Spring Boot (or willingness to ramp up quickly).
You’ve worked in fast-moving teams and thrive when given room to figure things out.
You take initiative and can drive complex modules to completion without needing constant guidance.
Strong with both low-level and high-level design; you know how to build scalable, reliable RESTful APIs.
Proficient with relational databases and aware of common performance pitfalls.
Confident with debugging and optimizing — memory leaks, latency issues, and other hard-to-find problems don’t scare you.
You write clean, testable code and know how to leave systems better than you found them.
You bring a product mindset — caring not just about what’s built, but why and how it delivers value to users.

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Responsibilities :
- Lead the development of the backend systems for our client's first product.
- Build reliable, secure, and performant backend systems.
- Drive test coverage and continuous delivery automation within the team.
- Mentor and provide feedback to teammates.
- You should have a min of 8 years of software development experience and management.
- Can write code that is readable, maintainable, secure, and performant.
- Know the importance of tests and how to approach writing different types of tests, good intuition for REST API design
- Deep understanding of relational databases, transactions, entity-relationship modeling.
- Comfortable writing highly concurrent systems.
- Experienced in using profilers, tuning garbage collection, optimizing SQL queries.
Desired Skills :
- Golang, Java, Python, Ruby, Node.
Company is a direct to consumer brand in affordable fast fashion space using full stack model to solve for high quality at affordable prices. We leverage in-house manufacturing coupled with strong usage of technology to drive efficiency. Rapidbox is funded by Top-Tier VC firms and
prominent angel investors.
Must Have Skills (Working Experience Needed):
Preferably a Graduate/Postgraduate from a Tier 1/2 college/university.
Core Java
Hibernate and any relational database – MySQL, Postgres, Oracle.
Redis Caching
Spring
Maven, Git
Ability to thrive in a dynamic environment with changing priorities
Spring
Experience with OO design, design patterns & deep understanding of JVM internals
(multithreading, garbage collection etc.)
Problem solver
Search solutions like ES, Solr
NoSQL data store like Cassandra/Mongo
Kafka
Microservices Architecture, Web services, API development, Enterprise integration
Experience on scalable and distributed systems
Good to have:
Distributed Cache
Performance testing tools - Jmeter, Locust, Gatling
Ecommerce background
Job Title: Backend Developer
Job Description: We are seeking a skilled Backend Developer to join our dynamic team. The ideal candidate will be responsible for designing, implementing, and maintaining the server-side logic, databases, and APIs of our applications. Key responsibilities include collaborating with cross-functional teams to develop scalable and efficient backend systems, troubleshooting and resolving issues, and staying updated on industry trends. Proficiency in programming languages such as Python, Java, or Node.js, along with experience in database management and API development, are essential for success in this role. Strong problem-solving skills, attention to detail, and a passion for creating robust and high-performance backend solutions are highly valued.
Requirements:
Proficiency in one or more backend programming languages (e.g., Python, Java, Node.js)
Experience with database management systems (e.g., MySQL, PostgreSQL, MongoDB)
Knowledge of RESTful API design and development
Familiarity with cloud services (e.g., AWS, Azure) is a plus
Strong problem-solving and troubleshooting skills
Collaborative mindset with excellent communication skills
Ability to work in a fast-paced and dynamic environment
• As a Python full-stack developer, your role would involve design development and deploy full-stack applications out of Artificial intelligence projects with a focus on low latency and scalability.
• You also need to optimize the application for better performance and a large number of concurrent users.
• A strong technologist we care about doing things the right way rather than just doing them and thrives in a complex and challenging environment.
Who are we looking for?
• Bachelors / Masters in Computer Science or equivalent with at least 3+ years of professional experience.
• Solid understanding of design patterns, data structures, and advanced programming techniques
• As an Engineer in our team, you will design, code, test, and debug quality software programs.
• Strong software design and architectural skills in object-oriented and functional programming styles.
• Python, Celery, RabbitMQ, Kafka, Multithreading, Async, Microservices, Docker, Kubernetes.
• Experience in working with Machine Learning Pipelines
• Experience in Reactjs.
• Experience in Celery, RabbitMQ/Kafka.
• Experience in Unit Testing Tools.
• Experience in working with SQL & NonSql databases such as MySQL, Mongo DB.
• Exposure to cloud technologies.
• Demonstrate the ability to work in a fast paced and hyper-growth environment where the requirements are constantly changing.
• Nice to have: Experience developing products containing machine learning use cases.
• Familiar with agile techniques like code reviews, pair programming, collective code ownership, clean code, TDD and refactoring.
At Primathon, we strive to deliver world-class software for our clients and empower our engineers to become full-stack in technology and provide them 360° experience. We are looking for champions in backend development with experience in NodeJs/Python. You would be working on NodeJs, Python, PostgreSQL, MongoDB, Redis Elastic search, RabbitMq, SQS, Docker, AWS.
Responsibilities and Duties
● Participate in agile software development, prototyping and code reviews
● As a backend engineer, you will work on backend services in Node JS, MongoDB, PostgreSQL, Redis.
● Design, implement and/or use RESTful web services
● Designing database schema
● Writing automation test cases
● Write testable, well-thought-out code within the ecosystem, embracing additional languages and frameworks when appropriate
Required Experience, Skills and Qualifications
● 1+ years of experience as a Backend developer.
● Experience designing, implementing and using RESTful Web Services with Service-Oriented Architecture.
● Knowledge & basic understanding of JavaScript frameworks like React, D3, etc and strong experience working with MVC.
● Solid understanding of version control principles, preferably using Git
● Experience using mocking frameworks, testing frameworks, dependency injection, NoSQL and/or relational databases
● Strong knowledge on how to navigate the vast and quickly evolving collection of open source projects and select the right tool for the job
● Attention to detail and the ability to build reliable, scalable, and flexible software.
Work Experience ** Minimum 2+Years
● Strong knowledge of data structures and designing for performance, scalability and availability.
● Solid understanding of multithreading, MVC, and strong OO skills.
● Good understanding of micro services architecture.
● Good understanding of development tools and processes.
● Good knowledge of cloud environment GCP, AWS
● Code, develop, design and architect the product.
● Design, implement and maintain highly scalable, multi-tier, distributed server software applications.
● Deliver across the entire product life cycle, design, build, deploy, test, release and support.
● Working directly with developers and product managers to conceptualize, build, test and release
products
- Perform requirement gathering, analysis and design
- Develop, create, modify and fix software applications
- Complete Unit & Integration Testing
- Deploy software
- Initial Validation after deployment
- Create documentation
- Troubleshooting and problem solving
Requirements
- Educational Background
- Experience (0+ years)
- The person should be proficient in Computer Science. Get your basics right, we will teach you everything else!
Examinations
- You will be asked questions concerning the following topics, Networking, Data Structures, Design patterns, Algorithm Analysis, and Concurrency. The questions are all language agnostic.
- You will also be asked to code a trivial Java program that meets specific requirements.
- Java, Maven, Spring-boot, REST/RESTful services, Javascript, Node.js, Angular, React,
Our Stack
- SQL, NoSql, Hibernate, Java Persistence API (JPA),
- Shell Scripting, Powershell scripting,
- JSON, XML
Benefits
- Unlimited Leave policy
- Apart from unlimited policy 9-Public Holiday over the year (Jan to Dec)
- Medical policy coverage up and above your CTC
- Unlimited scope to learn technology - no restrictions team wise/project wise
- Wonderful work culture
- Life time WFH for candidates outside Kolkata
- Opportunity to work with a product based company
- Weekly 2 days fixed off
- This is a remote position. Sath Infotech Pvt. Ltd is an established IT Security Consulting firm and is looking for developers to join its team. This role will work with team members, client stakeholders, and individuals to support and enhance Identity and Access Management and other security applications. Should be proficient in Computer Science.
- If you like working with IT professionals across a variety of Enterprise Level Environments with diverse processes and configurations to identify and solve complex problems, Sath Infotech can offer a career path to become a subject matter expert in the high demand roles of Cyber Security Analyst/Consultant, Enterprise IT Auditor or IT Project Management.

Description
Experience: 1.5 to 3 yrs
* Hands on work experience developing in Java and J2EE
* Hands on work experience developing in JavaScript
* Extensive working experience in Springboot
* Good to have No SQL (Mongo DB) and My SQL Exposure
* Good to have experience in AWS cloud environment
* Designing, developing, troubleshooting and debugging software within a project scope ensuring that work product meets end user acceptance criteria.
* Managing self-directed assignments to resolve software defects or implement features to meet schedule commitments with a high-level of quality.
* Acquiring knowledge of industry and company standards, tools and technology with a focus on pragmatic application to business-focused software solutions through initiative and self-study
Requirements
Primary Skill Java Springboot, Java Script
Good to have Mongo Db (No Sql), My SQL and Exposure to AWS
Benefits
Salary:300000 LPA to 500000 LPA
- Extensive experience in developing Java EE application
- Hands-on experience working with Spring, Spring Boot
- In-depth knowledge of relational and NoSQL databases.
- Experience working with Java Web Services, RESTful services
- Experience using Redis, Memcached or any other caching system
- Experience working with message brokers– preferably RabbitMQ
- Experience with infrastructure automation technologies like Docker, Kubernetes.
- Experience with build automation technologies like Maven, Gradle.
- Working in high paced competitive stock trading environment with core web app development, scripting, data interpretation and manipulation skills
- Designing, creating and maintaining our in-house software for business requirements
- Work on innovative ideas to improve the user experience of our internal systems and applications which are used by the trading teams
- Improve on existing tools to make trade monitoring systems robust and more reliable
Ideal candidate should have:
- Engineering degree in Computer Science (preferred) or any other discipline
- Experience on Python web app development (Preferably Django)
- Ability to work as a full stack developer
- Experience in Shell/Perl or Python scripting
- Prior experience of Linux or Unix based operating systems
- Ability to create automation scripts
- Experience/Knowledge of financial industry
- Ability to work in fast paced environment under pressure and manage multiple high priority projects
- Willingness to learn and work on new technologies
- Excellent communication skills







