Fullstack Developer

About CryptoXpress

CryptoXpress is building the world’s easiest platform for crypto and everyday life. We enable users to trade crypto, book flights and hotels, and shop with gift cards - all in one app. Join our fast-paced, mission-driven team shaping the future of digital payments.

Apply Link: https://forms.gle/TMWRMtEDWRjEi3vK8

Role Overview

You will turn business requirements into reliable application logic and functionality, building and maintaining our web and mobile applications using React Native, ReactJS, Node.js, and related technologies. Your work will directly impact our product experience for thousands of users worldwide.

Key Responsibilities

• Develop & Maintain Applications: Build robust features for mobile and web using React Native and TypeScript. Maintain, refactor, and improve the existing codebase.
• Collaborate Across Teams: Work closely with product, design, and backend teams to deliver pixel-perfect UI in line with Figma design systems.
• Business Analysis: Translate business needs into actionable features with clear, reasonable estimations.
• Code Quality: Participate in code reviews, standups, and ensure high code quality by addressing bugs and tech debt.
• Problem Solving: Show good judgment—propose pragmatic alternatives when requirements are unclear or designs can be optimized.
• Integration: Integrate with REST APIs and third-party services. Handle data storage, offline capability, and security.
• Communication: Provide clear, timely updates and feedback during business hours.

Required Skills & Experience

• React Native (Mandatory)
• ReactJS (Web)
• NodeJS (Backend/Server-side)
• JavaScript, TypeScript, HTML, CSS
• API Integration (RESTful services)
• Mobile App Development Lifecycle (prototyping, release, updates)
• Experience with Redux, Flux, unit testing (Jest/Enzyme), and code debugging
• Experience with code quality tools (ESLint, type checking, prop types)
• Knowledge of responsive UI, Figma design compatibility, and pixel-perfect implementation
• Basic understanding of blockchain technologies
• Strong problem-solving and communication skills

Nice-to-Have

• Experience with backend frameworks (Express.js, NestJS, or similar)
• Familiarity with Web3.js or other blockchain libraries
• Exposure to mobile offline storage and push notifications
• Knowledge of security best practices in mobile/web apps

Pro Tip: Tips for Application Success

• Explore CryptoXpress before applying, take 2 minutes to download and try the app so you understand what we're building
• Show your enthusiasm for crypto, travel, and digital innovation
• Mention any self-learning initiatives or personal crypto experiments
• Be honest about what you don't know - we value growth mindsets

Job Purpose

We are looking for an energetic and self-starter software developer to join our product development practice as a Senior Software Engineer (SSE).

You will get to work with some of the best and knowledgeable tech talent in the financial world and you will build next generation digital services and platforms that will lead the transformation goals for our customers. You will work closely with the engineering, UX, product and test automation communities, as part of the agile team, to lead product design and development and to help the Digital Service Product Owner to deliver and maximize value.

You will drive engineering and architecture best practices for writing and encouraging others to write secure code and dev-ops process while getting opportunities for learning new business domain and topics, to work with industry SMEs and to learn new technology and behavioral skills.

Key Responsibilities

As a Full-stack Developer

• 8+ year’s professional experience in enterprise software design and development in an N-tier architecture environment;
• Understanding of 12-factor app framework is highly desirable
• Must have experience building web applications using .NET core 3.x (.NET 5.0 is better), Web API, HTML5, React OR other JS-based frameworks like Angular
• Must have experience with tools such as Jira, Github, Confluence (or other wiki), SonarQube (or similar), OWASP ZAP (or similar) and Snyk (or similar)
• Experience with data visualization libraries /framework like D3js, Plotly, HighCharts etc. will be an advantage
• Must have experience with SOA and Web Service standards (REST & JSON/SOAP & WSDL/WS-I Basic Profile), and IIS
• Understand the business requirements from the product owner(s)
• Design and implement the system from scratch & build enhancements, features request using modern application frameworks using C# and React with .NET Core, Web API, AWS services etc.
• Participate in both development & maintenance tasks
• Independently troubleshoot difficult and complex issues on production and other environments

As a Technical Lead in the pod

• Must have experience of working in an automated CI/CD environment and with fast moving teams using Scrum/Agile; Experience with AWS and other cloud providers is highly desirable
• Must have extensive experience with object oriented design principles. Ability to articulate the pros and cons of design/implementation options
• Participate in design review and peer code review
• Work collaboratively in a global setting, should be eager to learn new technologies
• Responsible for extending and maintaining existing codebase with focus on quality, re-usability, maintainability and consistency
• Coach teams on best practices and architecture design

As member of the Engineering community

• Must have extensive experience with object oriented design principles.
• Ability to articulate the pros and cons of design/implementation options
• Good understanding and knowledge of areas including but not limited to requirement gathering, designing, development, testing, maintenance, quality control etc.
• Stay up-to-date on latest developments in technology
• Learn and share learnings with the community

Behavioral Competencies

• A self-starter, excellent planner and executor and above all, a good team player
• Excellent communication skills and inter-personal skills are a must
• Must have organizational skills, including multi-task capability, priority setting and meeting deadlines
• Ability to build collaborative relationships and effectively leverage networks to mobilize resources
• Liking and initiative to learn business domain is highly desirable
• Likes dynamic and constantly evolving environment and requirements

1. Must have Experience in React, Nodejs.
2. Experience with the CI Systems.
3. Experience with any of the Cloud Platforms Such as GCP,AWS.
4. Experience with Continuous Integration environments.
5. Experience in end-to-end testing frameworkS Like Puppeteer / Cypress / Protractor/ Other selenium testing framework.
6. Experience with JavaScript Unit Testing Frameworks Like Jest/Mocha.
7. Experience in TypeScript.

• Experience - 3-5 yrs
• CTC to Offer - 10-15 Lacs
• Work Location - Mumbai / Chennai

Front End: React JS / Ionic Framework

Back End: Spring Boot / Java

Database: Relational Database

• Should have developed minimum 2 projects with the above tech stack end to end with each project duration of minimum of 6 months
• Should have developed REST/JSON APIs with Spring Boot
• Should be able to develop a module independently end to end
• Should be able to design a simple database
• Should be able to understand and clarify client requirements
• Should be able to write FSDs
• Should be able to write unit test cases manually or using tools
• Should have worked with Service-oriented architecture
• Should know about code maintenance, code review, unit testing

We are building a team whose area of focus will be web GUI development. This will be a horizontal team that will specialize in GUI development and will build GUIs for all our products. Our GUI development platform is a proprietary tool. It has an IDE (Integrated Development Environment) which comes with a rich library of widgets. It allows you to design the web page without having to go into details of the HTML/CSS, by using a drag and drop philosophy. Once a widget is in place on a page, one can define the database interactions of the widgets by defining the underlying table structure and SQL queries. In addition to SQL & database knowledge, the work also involves data manipulation using Java programming. Query performance and Java code performance and optimization will be very essential for work. So we are looking for good programmers with UI + Java + SQL background who are keen to take up GUI development as a specialization.

Company description:

We are a startup company based out of Mohali developing mobile and web applications that changes the way people use technology. We live in the realm of rising, ever-evolving technology. From the cassette tape to nanotech skeletons, we've come a long way. Splitting an atom is no big deal  and who'd have thought that we'd talk through airwaves? Change is inevitable, and the tide that brings it.

At Relinns, we breathe tech solutions and embrace innovation with open arms. With over 5 years of experience, we've had phenomenal growth which acts as a testimony to the knowledge we've come to gather over time. We have been fortunate enough to get an opportunity to work with clients such as Apollo Tyres, Khatabook, Shahi Exports, Manchester City Football Club, etc.

We invite you to join us in developing something new and innovative for this world.

• Immense scope for learning and development

• Work with an innovative and fun environment

• Expert in C#, http://asp.net/">ASP.NET MVC, .NET Core 3.1/.Net 5 ,Angular 8 +,Typescript, JavaScript and REST API Services, Entity Framework.
• Solid understanding of object-oriented programming techniques (Inheritance, interfacing, extensions, clean Architecture,Mediatr etc).
• Experience building reusable components and frontend libraries.              
• Ensuring the entire stack is designed and built for speed and scalability
• Manage the lifecycle of code development, from ideation to sprints to deployment.
• UI Technologies (Angular, React, Typescript)
• working with public cloud (Azure)

What do I need to be Eligible for this Role?

• 3+ years of experience in http://asp.net/">ASP.NET and 1+ years of experience in Angular 
• Azure SQL ,Azure Devops
•  Knowledge of containerization technologies such as Docker and Kubernetes is a plus.
• Excellent communication, organizational, and planning skills
• Working experience of Agile development methodologies and of DevOps integration
• Exposure to JIRA or other ALM tools to create a productive, high-quality developmen
• Working experience in swagger for API documentation and TEST UNIT in order to run them before building and release.
• Microservices
• C#, WCF Services, Windows Services, Web API, Entity Framework NET Core 3.1
• Web Services (XML, JSON, REST, SOAP)
• Messaging technologies(Kafka/MQ)
• In-memory databases (Redis)
• Relational databases (SQL server/DB2)