Java Developer

JD: Elixir Developer- Trading & Fintech

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.

About the Role

We’re looking for an Elixir Developer who is passionate about building scalable, high

performance backend systems. You’ll work closely with our engineering team to design,

develop, and maintain reliable applications that power mission-critical systems.

Key Responsibilities

• Develop and maintain backend services using Elixir and Phoenix framework.

• Build scalable, fault-tolerant, and distributed systems.

• Integrate APIs, databases, and message queues for real-time applications.

• Optimize system performance and ensure low latency and high throughput.

• Collaborate with frontend, DevOps, and product teams to deliver seamless solutions.

• Write clean, maintainable, and testable code with proper documentation.

• Participate in code reviews, architectural discussions, and deployment automation.

Required Skills & Experience

• 2–4 years of hands-on experience in Elixir (or strong functional programming background).

• Experience with Phoenix, Ecto, and RESTful API development.

• Solid understanding of OTP (Open Telecom Platform) concepts like GenServer, Supervisors, etc.

• Proficiency in PostgreSQL, Redis, or similar databases.

• Familiarity with Docker, Kubernetes, or cloud platforms (AWS/GCP/Azure).

• Understanding of CI/CD pipelines, version control (Git), and agile development.

Good to Have

• Experience with microservices architecture or real-time data systems.

• Knowledge of GraphQL, LiveView, or PubSub.

• Exposure to performance profiling, observability, or monitoring tools.

Why Join Us?

• Work with a team that expects and delivers excellence.

• A culture where risk-taking is rewarded, and complacency is not.

• Limitless opportunities for growth—if you can handle the pace.

• A place where learning is currency, and outperformance is the only metric that matters.

• The opportunity to build systems that move markets, execute trades in microseconds, and redefine

fintech.

This isn’t just a job—it’s a proving ground. Ready to take the leap? Apply now.

Technical Overview:

● You will be expected to design, develop and maintain large-scale complex backend web applications.

● You will be expected to rapidly learn and apply relevant new technologies.

● You will be having a high level of interaction with business and product stakeholders.

● You will be working on the entire web application stack, which includes:

      o Web server hosting

      o RESTful communication

      o Message brokering

      o Backend application layer, which includes the service and domain layers

     o Data layer for persistence or caching

● You will be participating in an agile software development cycle, which includes:

     o Design

     o Development

     o Code Review

     o Unit and Integration Testing

     o Release

● As a Staff Engineer, you will be expected to contribute to design, code review, refactoring, and project management.

● You will be exposed to the following technologies:

     o Web application frameworks: Ruby on Rails, Node.js, Java Play, Vert.x, AIOHTTP, AWS Lambda

     o Languages: Ruby, Java, Kotlin, Javascript, Python

     o Data stores: PostgreSQL, Aerospike, Redis, Amazon Redshift

     o Communication: HTTP, Amazon SQS, Sidekiq, Amazon SNS

     o Server Management: Amazon ECS, Docker

Product Overview:

You will be contributing to products concerning both customers and partner drivers.

Product sectors include:

1) Growth: You’ll build tools to help boost user growth on the platform including our industry-best driver onboarding, training and certification system, referral system, and lead management models.

2) Lifecycle Management: Build tools to help users engage with the platform better, which include rewards and recognition modules, subscription services account management tools, partner and customer wallets and payout modules, and churn detection systems among others.

3) Transaction Experience: You’ll help deliver the most delightful booking experience to our customers and drivers. As part of this team, you’ll be responsible for our core booking system, pricing and payment

systems, location tracking and filtering services, fraud prevention systems, and in-app ticketing and support among others.

4) Fulfilment: As part of the fulfillment team, you’ll work on systems that ensure a high degree of ride fulfillment on the platform. Tools include allocation methodologies and systems, dynamic pricing, dynamic partner routing, and partner re-activation tools among others.

5) Enterprise Solutions: You’ll help Porter’s enterprise customers achieve delivery excellence. You’ll build tools for contract management, fleet management, fleet and route optimization tools, alerting and monitoring tools, and analytics suite among others.

Job Description

We are hiring full-stack developers for luxury-commerce platform that is well-funded and is now ready for its next level of growth. It is backed by reputed investors and is already a leader in its space. The focus for the coming years will be heavily on scaling the platform through technology.  Market-driven competitive salary for the right candidate

Roles & Responsibilities:

• Work with the Business Teams & Product Managers, understand the requirements and design the technical architecture and implement it
• Build the code independently according to the technical specifications, detailed design, maintainability, and coding and efficiency standards
• Create a technical design from Functional Design Doc / Requirements Doc and be able to troubleshoot with debugging skills
• Own product and its features from conception to delivery.

Qualifications:

• Proficiency in Node JS, and React JS.
• Hands on experience in developing customer facing Node JS based applications is a must.
• Knowledge of front-end technologies such as HTML, CSS, and JavaScript.
• Familiarity with datastores such as MySQL, Oracle, Redis, and Solr/Elasticsearch.
• Knowledge of logging frameworks such as fluentd, logstash etc.
• Knowledge of Containerization (Docker, Kubernetes etc.) will be an advantage
• Writing and utilizing RESTful API services and performance tuning web applications
• Experience with cloud providers such as AWS, Azure etc.
• Passion for building & scaling consumer-facing products.
• Attention to detail, good communication and organizational skills

Title: 

Node Js Developer

Ideal candidates will have 1-3 years of experience  in Node JS and AWS.

Responsibilities: 

• Translate application storyboards and use cases into functional applications
• Design, build and maintain efficient, reusable, and reliable Node JS code
• Ensure the best possible performance, quality, and responsiveness of applications
• Identify bottlenecks and bugs, and devise solutions to these problems, Help maintain code quality, organization, and automation.
• Triage and resolve complex + systemic issues reported on existing production systems
• Communicate effectively with  product owners, and development team members to facilitate understanding of deliverables, estimates, and prioritization
• Contribute to production deployments, including documentation of technical specifications and release notes
• Designs and develops quality software that conforms to department standards and code style
• Writing reusable, testable, and efficient code, create automated test cases following TDD/BDD best practices
• Maintain and enhance existing NodeJS codebase.
• Organize an agile development process that facilitates collaboration, provides transparency, empowers the project team, surfaces and resolves impediments,delivers high-quality software, focuses on delivering business value, and continuously looks to improve.
• Take on a championship role in on-time, high-quality delivery of products through the entire application lifecycle.

What will you work on?

• Architecting clever technical solutions
• Hands-on development using NodeJS and other Javascript frameworks
• Recommend technical frameworks and tech stacks
• Define REST, or GraphQL APIs, document APIs and develop the API handlers
• Design and develop with serverless and scalable systems
• Integrate with 3rd party systems
• Create architectural solution prototypes
• Lead the team, code reviews, and problem-solving

What Makes You A Great Fit?

• 1+ years of software experience with Node JS, Javascript frameworks related to webstack
• Understanding the nature of asynchronous programming and its quirks and workarounds
• Experience with use of serverless functions from AWS
• Experience with architecture of technology systems having hands-on expertise in backend and cloud systems ( AWS, GCP)
• Expertise with NoSQL databases (Mongo, ElasticSearch, Redis) including design of schemas and development for these databases
• Knowledge of DevOps practices and CI/CD pipelines
• Experience in Microservice architecture and development including REST-based APIs.
• Highly collaborative with an affinity for solving complex problems through dialogue with team members.
• Curious, always seeking the whys and hows in order to gain a deeper and more complete understanding of the business and technology.
• Comfortable with ambiguity can begin to explore and solve complex problems when the problem and solution are not well-defined.
• Ability to multitask, switching between various projects/tasks of different natures and complexity with ease
• Knowledge of git based workflows such as gitflow
• Experience with Python in addition to the core knowledge of Node JS is a plus
• Chatbot, Machine Learning, Data Science/Big Data experience will be a plus
• Excellent communication skills, verbal and written

Competencies & Behavior

• Excellent communication and interpersonal skills
• Implement design thinking for different strategieS
• Attention to detail and the ability to work to tight deadlines
• Strong experience in cloud server infrastructure
• Ability to work on complex applications, perform product analysis, development tasks of complex web
• Jumping on a call with clients to understand the requirement and profile them the right solution, helping formulate an effective solution and turning it into a working application
• Conducting website performance and unit tests
• Heavy involvement in the requirements gathering, development and operational stages of new projects
• Troubleshoot and debug related application defects with existing and new applications
• Work collaboratively with the team members and train them as and when required.

• 8+ years of relevant work experience
• Well-versed in data structures, algorithms, and software design. Programming experience with at least one of
• Java or Python and object-oriented design
• Knowledge on SQL, NoSQL databases, Messaging/Caching technologies and AW deployments is a plus
• Exposure to the architecture and design (design patterns, security, reliability and scaling) of new and current systems. Experience in building highly scalable business applications, which involve implementing large complex business flows involving multiple third-party integrations
• Prior startup experience is a plus

Basic Qualifications:

• 2+ years of non-internship professional software development experience
• Programming experience with at least one modern language such as Java, C++, or C# including object-oriented design
• 1+ years of experience contributing to the architecture and design (architecture, design patterns, reliability and scaling) of new and current systems.

Additional Job requirements

• BS/MS/PhD in Computer Science/Math or equivalent
• BS in computer science or related field.
• 2+ years of relevant professional software development experience: designing, developing, and delivering software written in Java, C#, or C++, web development.
• Knowledgeable in object-oriented design patterns.
• Experience building highly scalable and distributed systems

Preferred Qualifications

• Experience with service-oriented architecture and application/services development
• Passion for performance debugging and benchmarking
• Ability to clearly and concisely communicate with technical and non-technical stakeholders across all levels of the organization

We are looking for a Ruby on Rails developer responsible for managing the interchange of data between the server and the users. Your primary focus will be the development of all server-side logic, definition, and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end. You will also be responsible for integrating the front-end elements built by your co-workers into the application. Therefore, a basic understanding of front-end technologies is necessary as well.

Responsibilities

• Design, build and maintain efficient, reusable, and reliable Ruby code
• Integration of data storage solutions 
• Integration of user-facing elements developed by front-end developers with server-side logic
• Identify bottlenecks and bugs, and devise solutions to these problems
• Help maintain code quality, organization, and automatization
•  

Skills

• Experience with Ruby on Rails, along with other common libraries such as RSpec and Resque
• Good understanding of the syntax of Ruby and its nuances
• Solid understanding of object-oriented programming
• Good understanding of server-side templating languages 
• Good understanding of server-side CSS preprocessors 
• Basic understanding of front-end technologies, such as JavaScript, HTML5, and CSS3
• Familiarity with concepts of MVC, Mocking, ORM, and RESTful
• A knack for writing clean, readable Ruby code
• Ability to integrate multiple data sources and databases into one system
• Understanding of fundamental design principles behind a scalable application
• Able to create database schemas that represent and support business processes
• Able to implement automated testing platforms and unit tests
• Proficient understanding of code versioning tools 
• Familiarity with development aiding tool familiarity with continuous integration