React.js Developer

JD: Flutter Developer – Fintech & Trading

About Us:

At Tradelab Technologies Pvt Ltd, we don’t just build web applications, we create highperformance trading platforms tailored for brokers and financial institutions. Our platforms

powerreal-time market analysis, ultra-low-latency trade execution, and seamless broker-client interactions. We work in a high-stakes, outcome-driven environment where brokers demand reliability, speed, and security. If you're an expert React developer who thrives on solving complex front-end engineering challenges in the brokerage and trading domain, this is the role for you.

What We Expect:

 Min 2 years of mobile development experience, with 1+ years in Flutter & Dart.

 Proven ability to build and scale real-time, high-performance fintech applications.

 A sharp eye for stunning UI/UX design that balances aesthetics with seamless functionality.

 Mastery over state management solutions (Provider, Riverpod, BLoC, or similar).

 Hands-on experience with real-time data streaming, push notifications, and WebSockets.

 Strong expertise in security, encryption, and compliance—you know fintech demands precision.

 A track record of integrating RESTful APIs, GraphQL, and third-party services into flawless mobile apps.

 A mindset that thrives under pressure—we work fast, and we expect results.

What You Will Do:

 Lead the development of world-class fintech mobile applications that redefine user expectations.

 Architect and optimize blazing-fast, low-latency Flutter applications for financial markets.

 Work with designers, backend engineers, and product teams to craft seamless, intuitive, and ultra

secure user experiences.

 Solve hard problems at scale—whether it’s optimizing performance, reducing load times, or ensuring

absolute security.

 Push the boundaries of mobile fintech innovation, from AI-powered insights to predictive analytics.

 Own your work end-to-end—no excuses, no hand-holding, just results.

Nice-to-Have Skills:

 Experience in high-frequency trading, stock markets, or financial data visualization.

 Contributionsto open-source Flutter projects or a portfolio of high-impact applications.

 Knowledge of AI-driven UX, machine learning integrations, or automation in mobile apps.

 A background in mentoring developers, leading mobile teams, or setting architectural standards.

Why Join Us?

 Work with some of the sharpest minds in fintech and mobile engineering.

 Build products that traders, investors, and financial professionals rely on daily.

 A culture that values bold innovation, fast execution, and pushing boundaries.

 Expect challenges, high expectations, and relentless pursuit of excellence.

 Take complete ownership—from ideation to deployment, every pixel and every line of code should

scream excellence.

 Competitive compensation, performance-driven growth, and a real opportunity to lead and shape the future of fintech mobile applications.

If you’re obsessed with performance, thrive under pressure, and are driven by results, we want you on our team.

This is your chance to solve some of the toughest engineering challenges in fintech. Step up. Apply now.

Recro is a developer-focused platform that was founded with the aim of seamlessly matching individual expertise with the right opportunities.

We empower talented developers by providing them with relevant experience at fast-growing startups based on technical competencies and aspirations. These opportunities have a significant impact on their career success and help them become their best self.

We are looking for a good JavaScript developer who is proficient with React.js. Your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux). You will ensure that these components and the overall application are robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important.

Responsibilities

• Developing new user-facing features using React.js
• Building reusable components and front-end libraries for future use
• Translating designs and wireframes into high-quality code
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers

Skills:

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Thorough understanding of React.js and its core principles
• Experience with popular React.js workflows (such as Flux or Redux)
• Familiarity with newer specifications of ECMAScript
• Experience with data structure libraries (e.g., Immutable.js)
• Knowledge of isomorphic React is a plus
• Familiarity with RESTful APIs
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Familiarity with modern front-end build pipelines and tools
• Ability to understand business requirements and translate them into technical requirements
• A knack for benchmarking and optimization
• Familiarity with code versioning tools (such as Git, SVN, and Mercurial)

Strong hands-on experience with ReactJS, Redux, TypeScript, HTML, Bootstrap, Material UI, CSS3/SCSS, Webpack, NPM, NVM, Visual Studio Code

Knowledge/Experience on Restful APIs integration.

Unit testing with Jasmine or an equivalent framework

Experience or Knowledge in developing complex reusable component libraries such as complex grids, spreadsheet components etc.,

Strong in UI/UX standards implementation

Understanding of browser fundamentals and Page Optimizations

Experience working with Git and Azure

We are looking for bright and extraordinary software developers to join our technology team. You will build next generation software used by some of the most sophisticated alternative asset managers, as well as architecting solutions to support new technical and business initiatives.

           What You'll Do

• Build awesome end user experience using a combination of UX design + Right UI frameworks.
• Work with the product team to understand the end user needs and build intuitive UI flows.
• Develop technical design documentation for frontend.
• Collaborate with backend team to discuss and close API contracts.
• Collaborate with non-technical stakeholders (Product Managers, Designers) to review usability, accessibility of the UI.
• Build reusable components.

What You'll Need

• A bachelor's degree in Engineering with 2-5 years of experience in IT industry
• 2+  years of web development technologies including HTML5 JavaScript, typescript, React, CSS, TDD
• Good understanding of UX design, usability, accessibility, look and feel consistency
• Good understanding of architectural principles, patterns, web performance
• Experience in latest trends ES6/7 Node.
• Working knowledge of Object-Oriented JavaScript and Functional JavaScript.
• Having experience/understanding of Material UI design and mobx are preferred
• Deep understanding in core web and browser concepts
• Strong communication and interpersonal skills

Arcesium and its affiliates do not discriminate in employment matters on the basis of race, color, religion, gender, gender identity, pregnancy, national origin, age, military service eligibility, veteran status, sexual orientation, marital status, disability, or any other category protected by law. Note that for us, this is more than just a legal boilerplate. We are genuinely committed to these principles, which form an important part of our corporate culture, and are eager to hear from extraordinarily well qualified individuals having a wide range of backgrounds and personal characteristics.

Responsibilities:

• Meeting with the design team to discuss application features and design ideas.
• Researching similar application designs and user interface modules.
• Creating a website and application design mockups with enhanced UI features.
• Presenting updated front-end designs for final sign-off.
• Writing the front-end code and building the user interface.
• Debugging code errors and troubleshooting software issues.
• Conducting live application tests and tweaks.
• Updating web applications in line with user trends.

Requirements:

• Bachelor's degree in computer science or equivalent practical experience.
• Understanding of OOPS concepts, Persistence, Threading.
• Good understanding of version control system (GIT).
• Knowledgeable in data structures and algorithms.
• Good understanding of web stack and how all the pieces fit together.

• 3+ years prior experience as a UI engineer.
• Familiarity with automated testing tools including Selenium, Jasmine, and Karma.
• In-depth knowledge of user interface models, application design, and website functionality.
• Proficient with front-end languages including HTML, JavaScript, and CSS.
• Familiarity with prototyping tools including InVision Studio, Balsamiq, and Sketch.
• Advanced problem-solving skills.

Good To Have:

• Competent in developing web apps using React.
• Prior experience of working in a product-based company.

• Prior experience of working in a startup.

Job Description:

The UI Engineer(4-7)  will design; develop front-end for AgroStar product solutions.

 Key areas of responsibility:

1. Responsible for core UI framework, implements and maintains it.
2. Operates effectively as an individual for quick turnaround of enhancements and fixes.
3. Responsible for the development of the front-end applications and components.
4. Responsible for architecture & design of the product.
5. Co-ordinate with the backend engineers & designers for requirement gathering of the product.
6. Responsible for creating POCs to design a scalable system.
7. Build reusable code and libraries for future use.
8. Responsible for quality assurance including web usability, accessibility, testing and debugging.

 As an ideal ‘Agstar UI Engineer’, you will need:

 3-7 years of prior hands-on experience in building responsive web interfaces for consumers

Significant experience with Git and GitHub including managing branches, merges, and administration

Ability to translate product requirements into functional code.

Ability to estimate the scope of work for sprint planning.

Top-notch programming skills.

Self-motivated and able to work in a small team with minimal supervision

Strong development experience on the following technologies -

HTML, CSS, Javascript, AJAX,  working with REST APIs.

Must be fluent in writing code in  ES6+ along with linters.

CSS preprocessor - SCSS/ LESS.

Front end frameworks/library such as ReactJS, Redux.

Web standards, Responsive design, and cross-browser compatibility, SEO, Accessibility.

We are looking for enthusiastic intrapreneurs who want to work at the ‘grass root’ level and want to make a difference to India’s biggest sector. We hope this excites you as much as us and looking forward to the next few conversations.

• Strong development experience of 2 years using front end technologies such as HTML,  JavaScript, CSS, JQuery, HTML5, React JS, Angular 4 or higher , Type Script
• Skilled at Object Oriented JavaScript and having a working knowledge of at least one of  the following MVC Frameworks (Angular, Ember, React etc.)
• In-depth understanding of the entire web development process (design, development, and deployment) 
• Understanding of common frontend design patterns for developing high performance, user friendly and robust applications