Python 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 You Will Do:

• 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 2–5 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 We Expect:

• 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:

• 2–5 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.

JioTesseract, a digital arm of Reliance Industries, is India's leading and largest AR/VR organization with the mission to democratize mixed reality for India and the world. We make products at the cross of hardware, software, content and services with focus on making India the leader in spatial computing. We specialize in creating solutions in AR, VR and AI, with some of our notable products such as JioGlass, JioDive, 360 Streaming, Metaverse, AR/VR headsets for consumers and enterprise space.

About the Job

As a Cloud Backend Engineer you will design, develop, and maintain scalable and reliable backend systems in cloud environments. You will be responsible for building cloud-native applications, optimizing backend performance, and ensuring seamless integration with frontend services and third-party systems.

What You’ll Be Doing

• Backend Development
• Design and implement scalable and high-performance backend services and APIs for cloud-based applications.
• Develop microservices architectures and serverless functions to support business needs.
• Ensure backend systems are secure, reliable, and performant, adhering to best practices and industry standards.
• Cloud Infrastructure and Deployment
• Build and manage cloud infrastructure using platforms such as AWS, Google Cloud Platform (GCP), or Azure.
• Deploy and maintain backend services using cloud-native technologies (e.g., Kubernetes, Docker, AWS Lambda, Google Cloud Functions).
• Implement and manage CI/CD pipelines to automate deployment processes and ensure smooth delivery of updates.
• Performance Optimization
• Monitor and optimize the performance of backend services, including database queries, API responses, and system throughput.
• Implement caching strategies, load balancing, and other performance-enhancing techniques to ensure scalability and responsiveness.
• Troubleshoot and resolve performance issues and system bottlenecks.
• Database Management
• Design and manage relational and NoSQL databases, ensuring data integrity, scalability, and performance.
• Implement data access patterns and optimize queries for efficient data retrieval and storage.
• Ensure backup, recovery, and data security practices are in place.
• Integration and Collaboration
• Collaborate with frontend developers, DevOps engineers, and other stakeholders to integrate backend services with frontend applications and third-party systems.
• Participate in architectural discussions and provide input on system design and technology choices.
• Ensure clear communication and documentation of backend services, APIs, and system interactions.
• Security and Compliance
• Implement security best practices to protect backend services from threats and vulnerabilities.
• Ensure compliance with relevant regulations and standards, including data privacy and protection requirements.
• Conduct regular security assessments and vulnerability scans to maintain system integrity.
• Testing and Quality Assurance
• Develop and maintain automated tests for backend services, including unit tests, integration tests, and end-to-end tests.
• Perform code reviews and participate in quality assurance processes to ensure high code quality and reliability.
• Monitor and address issues identified during testing and production deployments.
• Documentation and Knowledge Sharing
• Document backend services, APIs, and infrastructure setups to facilitate knowledge sharing and support.
• Create and maintain technical documentation, including architecture diagrams, API specifications, and deployment guides.
• Share knowledge and best practices with team members and contribute to a collaborative development environment.

What We Need To See

• Strong experience in backend development, cloud technologies, and distributed systems, with a focus on building robust, high-performance solutions.
• Minimum 5 years of experience in backend development, with a strong focus on cloud-based applications.
• Proven experience with cloud platforms (AWS, GCP, Azure) and cloud-native technologies.
• Experience in designing and implementing RESTful APIs, microservices, and serverless architectures.
• Technical Expertise in:

1. Backend Development

• Strong experience with backend programming languages such as Node.js, Python
• Expertise in working with frameworks such as NestJS, Express.js, or Django.

2. Microservices Architecture

• Experience designing and implementing microservices architectures.
• Knowledge of service discovery, API gateways, and distributed tracing.

3. API Development

• Proficiency in designing, building, and maintaining RESTful and GraphQL APIs.
• Experience with API security, rate limiting, and authentication mechanisms (e.g., JWT, OAuth).

4. Database Management

• Strong knowledge of relational databases (e.g., PostgreSQL, MySQL) and NoSQL databases (e.g. MongoDB).
• Experience in database schema design, optimization, and management. 

5. Cloud Services

• Hands-on experience with cloud platforms such as Azure,AWS or Google Cloud.

6. Performance Optimization

• Experience with performance tuning and optimization of backend services.

7. Security

• Understanding of security best practices and experience implementing secure coding practices.
• Soft Skills:
• Strong problem-solving skills and attention to detail.
• Excellent communication and collaboration skills, with the ability to work effectively in a team environment.
• Ability to manage multiple priorities and work in a fast-paced, dynamic environment.

• Java / J2ee Development environments
• Eclipse or similar tooling
• Very Strong Web front end development including JavaScript, Angular, React, etc.
• Develop REST based microservices using Spring, SpringBoot, SpringCloud, SpringListener, SpringMVC, JavaScript, HTML, XML, JUNITS Cloud, container image development and container orchestration

Skills Required:

• Angular, Spring Springboot, SQL Server

Experience Preferred:

• Looking for a full stack developer with Strong Front end experience, Spring Springboot, SQL Server, GCP

Job Description

• Design & implement backend APIs 
• Mentor junior developers technically.
• Actively work to reduce tech debt in the backend
• Work towards more stability & scalability of the backend
• Tech stack - Java, AWS, Aurora etc. 

Eligibility

• 4-8 years of product company experience
• OOP implementation experience. Programming language does not matter. We use Java internally but have hired folks from non Java background.
• Hands on experience in SQL, Dynamo DB, Postgres etc preferred. 
• Prior experience building REST APIs
• Advanced understanding of AWS stack
• Prior knowledge of solving problems at scale.

(Senior Product Engineer - ROR)

Experience - 3 to 6 years

Location  - Pune

We are looking for an enthusiastic developer with a strong understanding of core Ruby and Rails framework along with PostgreSQL database. Someone who is passionate about coding and loves to work in an ongoing challenging environment. You will be part of a talented software team. You have to consistently deliver in a fast paced environment and should be more than willing to build software that people love to use.

Key Responsibilities

The individual role that you’ll play in our team:

• Developing large multi-tenant applications in Rails.
• Understanding Rails best practices and religiously introducing those to our codebase.
• Knowledge on how to do effective Refactoring.
• Ability to write unit tests and following those practices religiously.
• Working closely with the Product managers and UX team.
• Helping QAs to write automated integration tests.
• Staying up-to-date with current and future Backend technologies and architectures.

Read the ‘Skills and Experience’ section, it is not the usual yada yada, you’ll be asked specific questions on these.

Skills and Experience

• Ruby on Rails architecture best practices
• Knowledge on the latest versions on ROR
• Strong OOP knowledge in Ruby.
• Asynchronous Networking in Ruby 
• Designing RESTFul HTTP APIs using JSON-Schema or JSON API (http://jsonapi.org/">jsonapi.org).
• Ability to architect and develop API only backend
• Experience in using ActiveRecordSerializer
• Understanding O-Auth2 or JWT (Json Web Token) authentication mechanisms.
• How to use RSpec
• Rails Security Best Practices
• PostgreSQL and Rails.
• SQL concepts like Joins, Relationships etc.
• Understanding DB Partition strategies.
• Knowledge about refactoring ActiveRecord Models (read this - “7 Patterns to Refactor Fat ActiveRecord Models”).
• Understanding scaling strategies for a high-traffic Rails applications (2 million+ requests a day).
• Background Job processing using Redis and Sidekiq
• Experience in using Amazon Web Services (AWS) tools.
• Writing automated Deployment Scripts using Capistrano, Ansible etc.
• Sending emails in Rails
• Knowledge in Linux and Git is mandatory

Optional Skills

• Knowledge in using Chef or Puppet
• Ability to do basic DevOps like setting up a Linux server.
• Websocket communication in Rails 5.
• Node.js
• JRuby

Scalefusion (formerly known as Mobilock Pro): (Our Flagship Product)  

Scalefusion MDM allows organizations to secure & manage endpoints including smartphones, tablets, laptops, rugged devices, mPOS, and digital signages, along with apps and content. It supports the management of Android, iOS, macOS and Windows 10 devices and ensures streamlined device management operations with InterOps. Fusion of Endpoints at Scale. 

Promobi Technologies:   

ProMobi Technologies provides a leading Mobile Device Management Solution under the brand Scalefusion. The solution allows organizations to manage Android and iOS devices from the cloud. It offers modern mobile device management (MDM), application management (MAM) and content management (MCM) experience for corporate-owned devices. Renowned organizations from startups to Fortune 500 trust Scalefusion for their Device Management.