Backend Developer

About Us:

Tradelab Technologies Pvt Ltd is not for those seeking comfort—we are for those hungry to make a mark in the trading and fintech industry. If you are looking for just another backend role, this isn’t it. We want risk-takers, relentless learners, and those who find joy in pushing their limits

every day. If you thrive in high-stakes environments and have a deep passion for performance driven backend systems, we want you.

What We Expect:

• We’re looking for a Backend Developer (Python) with a strong foundation in backend technologies and

a deep interest in scalable, low-latency systems.

• You should have 3–4 years of experience in Python-based development and be eager to solve complex

performance and scalability challenges in trading and fintech applications.

• You measure success by your own growth, not external validation.

• You thrive on challenges, not on perks or financial rewards.

• Taking calculated risks excites you—you’re here to build, break, and learn.

• You don’t clock in for a paycheck; you clock in to outperform yourself in a high-frequency trading

environment.

• You understand the stakes—milliseconds can make or break trades, and precision is everything.

What You Will Do:

• Develop and maintain scalable backend systems using Python.

• Design and implement REST APIs and socket-based communication.

• Optimize code for speed, performance, and reliability.

• Collaborate with frontend teams to integrate server-side logic.

• Work with RabbitMQ, Kafka, Redis, and Elasticsearch for robust backend design.

• Build fault-tolerant, multi-producer/consumer systems.

Must-Have Skills:

• 3–4 years of experience in Python and backend development.

• Strong understanding of REST APIs, sockets, and network protocols (TCP/UDP/HTTP).

• Experience with RabbitMQ/Kafka, SQL & NoSQL databases, Redis, and Elasticsearch.

• Bachelor’s degree in Computer Science or related field.

Nice-to-Have Skills:

• Past experience in fintech, trading systems, or algorithmic trading.

• Experience with GoLang, C/C++, Erlang, or Elixir.

• Exposure to trading, fintech, or low-latency systems.

• Familiarity with microservices and CI/CD pipelines.

Key Responsibilities: 

• Rewrite existing APIs in NodeJS. 
• Remodel the APIs into Micro services-based architecture. 
• Implement a caching layer wherever possible. 
• Optimize the API for high performance and scalability. 
• Write unit tests for API Testing.
• Automate the code testing and deployment process.

Skills Required: 

• At least 3 years of experience developing Backends using NodeJS — should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds. 
• Excellent hands-on experience using MySQL or any other SQL Database. 
• Good knowledge of MongoDB or any other NoSQL Database. 
• Good knowledge of Redis, its data types, and their use cases. 
• Experience with graph-based databases like GraphQL and Neo4j. 
• Experience developing and deploying REST APIs. 
• Good knowledge of Unit Testing and available Test Frameworks. 
• Good understanding of advanced JS libraries and frameworks. 
• Experience with Web sockets, Service Workers, and Web Push Notifications. 
• Familiar with NodeJS profiling tools. 
• Proficient understanding of code versioning tools such as Git. 
• Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms. 
• Should be a fast learner and a go-getter — without any fear of trying out new things Preferences. 
• Experience building a large-scale social or location-based app.

Reward360 powers a data-driven customer engagement ecosystem that enables the world’s leading organisations to earn customer loyalty every day. For over 10 years, R360’s loyalty and reward platforms have driven ambitious loyalty programs for some of the world’s biggest brands – including Axis Bank, Standard Chartered Bank, HDFC Bank and Emirates National Dubai Bank. We have 500+ global retail partnerships and offer our clients reward programs, nuanced customer segmentation, data-centric campaigns, and big data analytics.

You will architect, design & build large scale software systems for loyalty, rewards, commerce and payments that are directly used by customers of large banks. You will have the opportunity to build systems end to end and improve & influence customer behavior. You will also influence best practices and drive how we operate large systems in an efficient manner. If you are excited about this opportunity and meet the requirements laid out below, we would like to talk to you! 

What you’ ll do: 

1. Work as Core Java developer with prime focus on Backend 

2. End to end development from design to development 

3. Code & design review of peers 

4. Troubleshoot critical issues and guide team as well 

What we’ll need: 

1. Overall 4-6 years of experience 

2. 3+ years of hands-on experience in Java/J2EE technologies 

3. Strong Data structures & algorithm skill 

4. Strong communication & design skills 

Technical Skills 

1. Core Java (Collection, multi-threading, design patterns) 

2. Frameworks - Hibernate, Spring, REST Jersey 

3. Front end technologies – Java Script, jQuery, Angular 

4. Database – SQL & NoSQL 

5. Modelling – UML & ERD 

Bonus point if: Candidate from product company would be preferred

Job Brief:

We are looking for experience in API and Node.js to produce scalable software solutions. You will be part of a cross-functional team that is responsible for the full software development life cycle, from conception to deployment. You should be comfortable around both front-end and back-end coding languages, development frameworks and third-party libraries. You should also be a team player with a knack for visual design and utility.

Responsibilities:

·       Work with development teams and product managers to ideate software solutions.

·       Design client-side and server-side architecture

·       Build the front-end of applications through appealing visual design.

·       Develop and manage well-functioning databases and applications.

·       Write effective APIs.

·       Test software to ensure responsiveness and efficiency.

·       Troubleshoot, debug and upgrade software.

·       Create security and data protection settings.

·       Build features and applications with a mobile responsive design.

·       Write technical documentation.

·       Work with data scientists and analysts to improve software.

Requirements:

·       Proven experience as a Full Stack Developer or similar role

·       Experience developing desktop and mobile applications.

·       Familiarity with common stacks

·       Knowledge of multiple front-end languages and libraries (e.g. HTML/ CSS, JavaScript, Nodejs and .Net)

·       Familiarity with databases (e.g. MySQL, MS SQL, Mogo DB)

·       Good to have- Cloud knowledge (Azure, AWS)

·       Strong command on API Development with  Nodejs

·       Good to have- knowledge on multiple back-end languages ( Java, Python) and knowledge of JavaScript frameworks ( React, Angular, Node )

·       Excellent communication and teamwork skills

·       Great attention to detail

·       Organizational skills

Technical Skills:

HTML, CSS, React, API, JavaScript, Node, SQL, and Cloud knowledge (Azure/AWS)

 Experience – 4+ Years

Responsibilities:

• Resolve complex technical issues and make design decisions to meet the critical requirements of scalable, highly available, multi-tenant enablement of services in the cloud.
• Independently investigate, present options, review and implement completely new functionality OR re-architect an existing solution to meet growing needs
• You will work closely with other development teams, product management, UX, and QA to define and implement a new product offering while ensuring continued functionality.
• Work with various external (application) teams to integrate with the product and help guide the integration.
• You will implement solutions that include database schema, business logic, and some presentation layer work.
• You will use existing methods and best practices in the software industry to create features and platforms with the highest levels of security, reliability, efficiency, and scalability.
• Experience mentoring senior developers.

Requirements:

• 8+ years of experience in software development experience with a proven track record of making technical decisions
• 8+ years of experience in coding in more than one programming language, e.g. Python, GoLang, node.js, etc
• Intimate working understanding of modern web applications from the database to browser
• Intimate understanding of MongoDB and extensive experience with database-driven applications
• Great problem-solving skills and ability to abstract functional requirements
• Excellent communicator in both technical and non-technical contexts
• Experience designing and improving complex software applications
• Experience coaching and mentoring developers at various levels of experience
• You have a sound understanding of programming fundamentals & their application to highly scalable web-based systems.
• You have successfully led a small agile team.