Backend Developer - SDE III

Role Overview:

We are seeking a motivated .NET Developer with around 3 years of experience to join our backend development team. The ideal candidate should have hands-on experience in C#, ASP.NET Core, and SQL, with a strong understanding of object-oriented programming and API development. You will work closely with product, DevOps, and QA teams to build and enhance backend systems

supporting our trading and fintech platforms.

Key Responsibilities:

• Develop, maintain, and enhance backend applications using .NET Core / ASP.NET MVC.

• Design and implement RESTful APIs for integration with frontend and third-party systems.

• Write clean, scalable, and efficient code following best practices.

• Work with SQL databases (preferably MS SQL Server) to design schemas, write queries, and optimize performance.

• Collaborate with product managers and frontend teams to translate requirements into technical solutions.

• Participate in code reviews, debugging, and troubleshooting production issues.

• Contribute to improving application performance, scalability, and security.

Required Skills & Qualifications:

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

• 3 years of experience in .NET development.

• Strong proficiency in C# and ASP.NET Core / ASP.NET MVC.

• Experience with Web APIs and RESTful architecture.

• Good knowledge of Entity Framework / LINQ.

• Hands-on experience with MS SQL Server or other relational databases.

• Understanding of OOP principles, design patterns, and software architecture concepts.

• Familiarity with Git or other version control systems.

• Basic understanding of HTML, CSS, and JavaScript (for integration purposes).

Nice-to-Have Skills:

• Exposure to Microservices architecture.

• Familiarity with Message Queues (Kafka, RabbitMQ).

• Knowledge of CI/CD tools and DevOps practices.

• Experience with cloud environments (AWS / Azure).

• Understanding of financial or trading systems is a plus.

Why Join Tradelab Technologies:

• Work on cutting-edge trading and fintech platforms used across the industry.

• Collaborative, growth-oriented environment with exposure to complex backend systems.

• Opportunity to learn from senior engineers and grow into full-stack or system design roles.

• Competitive salary and benefits

About the Role

We are looking for a highly skilled and experienced Senior React Native Developer with backend experience to join our team and lead the development of our cross-platform mobile application and its supporting backend services. You'll play a pivotal role in building, launching, and scaling a high-performance app that runs seamlessly on both iOS and Android — all from a single codebase — while also architecting and maintaining robust backend infrastructure in Node.js.

If you're passionate about mobile technologies, experienced in backend systems, and excited about building high-quality products from the ground up, we’d love to hear from you Responsibilities

• Lead the end-to-end development of a cross-platform mobile application using React Native.
• Build and maintain backend services and APIs using Node.js, ensuring scalability and performance.
• Collaborate with product managers, designers, and other engineers to deliver intuitive and seamless user experiences.
• Design and implement secure, reusable, and modular components (both frontend and backend).
• Optimize app and API performance across a wide range of devices and platforms.
• Ensure app and backend compliance with modern security, performance, and design standards.
• Set up and manage CI/CD pipelines for both frontend and backend (e.g., Fastlane, EAS, GitHub Actions).
• Integrate third-party APIs, services, analytics, push notifications, and more.
• Manage app store submissions and backend deployments.
• Mentor junior developers and contribute to establishing mobile and backend development best practices.

Requirements

Must-Have:

• 5+ years of experience in full-stack or mobile application development.
• 3+ years of hands-on experience with React Native.
• 2+ years of experience working with Node.js for backend development.
• Strong understanding of JavaScript (ES6+), TypeScript, and modern React architecture.
• Experience designing and integrating RESTful APIs, managing authentication, and handling network issues.
• Deep knowledge of mobile app development lifecycle for both iOS and Android.
• Familiarity with native build tools (Xcode, Android Studio).
• Solid grasp of mobile UI/UX principles and performance optimization techniques.
• Proficiency with Git, GitHub/GitLab, and agile workflows.
• Experience with features like push notifications, deep linking, in-app purchases, and analytics SDKs.

Preferred:

• Experience with Expo or EAS for managed workflows.
• Knowledge of CI/CD tools (Fastlane, Bitrise, GitHub Actions, etc.).
• Exposure to native modules (Objective-C/Swift and Java/Kotlin).
• Familiarity with automated testing frameworks (Jest, Detox, etc.).
• Experience publishing apps to the App Store and Google Play.
• Prior experience in startups or high-growth product environments.
• Working knowledge of databases (e.g., MongoDB, PostgreSQL) and cloud infrastructure (e.g., AWS, Firebase).

What We Offer

• Opportunity to lead and build a product end-to-end — frontend and backend.
• Work with a dynamic, high-performing team in a fast-paced, collaborative environment.
• Remote-first culture with flexible working hours.
• Competitive salary and equity options (if applicable).
• Dedicated learning and development budget to help you grow.

• Back-end software development
• Software engineering and designing data models and write effective APIs
• Working together with engineers and product teams
• Understanding business use cases and requirements for different internal teams
• Maintenance of existing projects and New feature development
• Consume and integrate classifier/ ML snippets from Data science team

What we are looking for:

• 2+ years of industry experience with the Python and Django framework.
• Degree in Computer Science or related field
• Good analytical skills with strong fundamentals of data structures and algorithms
• Experience building backend services with hands-on experience through all stages of Agile software development life cycle. 
• Ability to write optimized codes,debug programs, and integrate applications with third party tools by developing various APIs
• Experience with Databases.
• Experience with writing REST-APIs.
• Prototyping initial collection and leveraging existing tools and/or creating new tools
• Experience working different types of datasets (e.g. unstructured, semi-structured, with missing information)
• Ability to think critically and creatively in a dynamic environment, while picking up new tools and domain knowledge along the way
• A positive attitude, and a growth mindset

Bonus:

• Experience with relevant Python libraries such as Requests, sklearn, Selenium
• Hands on experience in Machine learning implementations
• Experience with Cloud infrastructure (e.g. AWS) and relevant microservices
• Good Humor

• PHP Developer Exp 6 + Years Openings:
• Candidate should have excellent communication skill.
• Object-oriented programming in PHP.
• Front-end technologies such as JavaScript, HTML, and CSS.
• Complex SQL queries and database schema design.
• MVC frameworks (Laravel, Yii2, Any Framework).
• Working in a collaborative team environment using tools like JIRA and Git.
• Consuming and creating web services.
• Stable work history and an ability to collaborate effectively.
• Demonstrable knowledge of web technologies including HTML, CSS, Javascript, AJAX, MYSQL,JQuery,Bootstrap ,Web services etc..
• Consuming and creating web services.
• Stable work history and an ability to collaborate effectively. ,

Responsibilities: 

• Develop backend systems for our 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

Requirements:

• 5+ years of software development experience
• Strong computer science fundamentals
• Deep and wide knowledge of Java ecosystem
• 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

Bonus:

• Understanding of domain-driven design concepts like ubiquitous language, bounded contexts, aggregates and domain events
• Know how to use test driven development as a design tool
• Good intuition for the principles underlying object-orientation, particularly encapsulation
• Understand the importance of immutability and of reducing the state-space of objects
• Know how to refactor large codebases safely
• Seek to identify key underlying ideas and use those as building blocks before reaching for shiny new tools

Responsibilities:

• Write well designed, testable, scalable and efficient code and oversee assigned programs (e.g. conduct code review) and provide guidance to team members
• Apply design principles to ensure code modularity and error handling at appropriate levels
• Communicate software requirements to development teams
• Evaluate and select appropriate software or hardware and suggest integration methods
• Address technical concerns, ideas and suggestions and provide technological solution to it
• Monitor systems to ensure they meet both user needs and business goals
• Design the overall structure of the platform and oversee programs to ensure the proper implementation of the architecture

Desired Skills and Experience

• 2-7years of relevant experience in an online start-up with a record of substantial achievements

in the specific role

• Strong programming foundation in PHP, MySQL, Oops Concepts and can develop core PHP based applications
• Must have worked on MVC frameworks – Laravel, CodeIgniter, Cake PHP or Zend.
• Experience with JavaScript and jQuery for producing AJAX applications.
• HTML5, CSS3, XML knowledge is mandatory
• Ability to make modifications to the systems with little or no interruption of service
• Solid exposure to API integrations and familiar with various design & architectural patterns
• Understanding fundamental design principles behind a scalable application
• Ability to thrive in a fast-paced, deadline-driven environment