React.js Developer

Senior React Developer – Trading & Fintech (Broker-Focused Solutions)

About Us:

At Tradelab Technologies Pvt Ltd, we don’t just build web applications, we create high-performance trading platforms tailored for brokers and financial institutions. Our platforms power real-time market analysis, ultra-low-latency trade execution, and seamless broker-client interactions.

What We Expect:

• 2+ years of front-end development experience, with 2+ years specializing in React.js.
• Deep expertise in React, Next.js, TypeScript, and state management libraries (Redux, Recoil, Zustand, etc.).
• Proven experience in building and optimizing ultra-responsive, high-performance trading platforms for brokers.
• Strong understanding of financial data visualization, real-time charting, order book mechanics, and trade execution workflows.
• Hands-on experience with real-time data streaming, WebSockets, FIX protocol, and API integrations for brokerage services.
• In-depth knowledge of performance optimization, server-side rendering, and rendering strategies for trading dashboards.
• Security-conscious mindset—you know how to build secure, compliant fintech applications that handle sensitive brokerage and trading data.
• A problem-solving mentality that thrives under pressure—brokers depend on our platforms for seamless trade execution, and we deliver nothing less than perfection.

What You Will Do:

• Lead the front-end development of trading applications designed specifically for brokers and financial institutions.
• Architect and optimize blazing-fast, low-latency web applications that ensure brokers can execute trades with unmatched speed and accuracy.
• Design and implement high-performance data visualization components—live stock charts, trade analytics, real-time market depth, and complex order books.
• Work closely with brokers, backend engineers, and UX designers to craft seamless, intuitive, and highly secure trading solutions.
• Solve hard problems at scale—whether it’s optimizing execution speeds, handling high-frequency WebSocket updates, or ensuring zero downtime during peak trading hours.
• Innovate and experiment with cutting-edge front-end technologies to push the boundaries of brokerage solutions.
• Own your work end-to-end—from concept to deployment, ensuring traders and brokers get a flawless user experience.

Must-Have Skills:

• Proven expertise in Front-end development with React.Js
• Deep expertise in React, Next.js, TypeScript, and state management libraries (Redux, Recoil, Zustand, etc.).
• Proven experience in building and optimizing ultra-responsive, high-performance trading platforms for brokers.
• Strong understanding of financial data visualization, real-time charting, order book mechanics, and trade execution workflows.
• Hands-on experience with real-time data streaming, WebSockets, FIX protocol, and API integrations for brokerage services.

Nice-to-Have Skills:

• Experience working on brokerage trading platforms, order management systems (OMS), or risk management tools.
• Contributions to open-source React trading libraries or a portfolio of real-time financial applications.
• Knowledge of regulatory compliance, order execution policies, and broker risk management tools.
• A track record of leading front-end teams, mentoring developers, and driving architectural decisions.

Why Join Us?

• Work with elite engineers and brokerage professionals in the fast-moving world of trading technology.
• Build platforms that brokers, traders, and financial institutions depend on daily.
• A culture that values bold innovation, real-time execution, and pushing the limits of brokerage tech.
• Expect challenges, high expectations, and a relentless pursuit of performance and precision.
• Competitive compensation, performance-driven growth, and a real opportunity to lead and shape the future of trading web applications for brokers.

If you’re obsessed with performance, thrive under market pressure, and are driven by results, we want you on our team. This is your chance to solve some of the toughest front-end challenges in brokerage and fintech. Step up. Apply now.

Core responsibilities

•      Collaborate with product teams to more accurately define new features

•      Collaborate with UX in the building of a design system/component library

•      Ensure high performance of all systems developed

•      Aware of the relationship between development and business with a strong sense of ownership

•      Employ the latest techniques such as agile software development

•      Good knowledge of highly scalable server-side development

•      Basic working knowledge of Unix/Linux

•      Excellent problem solving and coding skills in Javascript/Angular

•      Strong interpersonal, communication and analytical skills

•      Should have the ability to express their design ideas and thoughts

Job Brief

•      JavaScript and angular expertise

•      Experience with libraries such as bootstrap, Ag-grid, formly, observables, and ngrx

•      You enjoy working with new technologies, and are curious and energetic

•      Experience working with REST APIs

•       Good understanding about authentication and security

•      Create and maintain various unit and integration tests

•      You enjoy working in a creative and agile environment that moves fast

•      Ability and interest in providing mentorship to junior members of the team

•      Write high quality code and Conduct code reviews

•      Being resourceful and detail-oriented, along with being an outside the box thinker!

•      Experience being a great team player, who work collaborative, and brings a positive attitude

What will you do?

• Developing new user-facing features using React & Redux

• Build modular layouts, reusable code and libraries for future use

• Refactor, optimize and improve the existing code base for maintenance and scale

• Use test-driven development and acceptance tests to ensure feature quality

• Design and implementation of low-latency, high-availability, and performant applications

• Optimize application for maximum speed and scalability

• Work closely with back-end developers to make sure the user experience is implemented as it was conceived

Skills Required

• Strong proficiency in JavaScript, object model, DOM manipulation and event handlers, data structures, algorithms, JSX, and Babel

• Complete understanding of ReactJS and its main fundamentals like JSX, Virtual DOM, component lifecycle, etc.

In-depth understanding of redux

• Understanding of RESTful APIs, HTML/CSS, ES6 (variables and scoping, array methods), code versioning tools like GIT, and NPM

• Good understanding of Promises, Async/ Await and Callbacks

• Should have good knowledge of Socket

• Understanding the nature of asynchronous programming and its quirks and workarounds

• In-depth knowledge of object-oriented programming

• Understanding of JavaScript Development on the server side using NodeJS and Express would be a plus

• Knowledge of ES6 would be a plus

• Should have good hands-on experience on MongoDB, designing optimized database structures using MongoDB and writing optimized queries for better performance

60 Decibels is a tech-powered impact measurement company that makes it easy to listen to the people who matter most. We've been in business as an independent entity since early 2019, when we spun out of the global Impact Investor Acumen.

We believe that the best way to understand social impact is by talking to the people experiencing that impact. It sounds obvious when you say it, but that is not the typical practice for many impact investors, corporations and foundations working to create social change. 

We collect social impact data directly from beneficiaries (customers / employees / suppliers) using our network of 1000+ trained research assistants in 75+ countries. We do it quickly and without the fuss typically associated with measuring social impact. Our research assistants speak directly to customers to understand their lived experience; and our team turns all this data into benchmarked social performance reports, with accompanying insights, to help our clients demonstrate and improve social performance. 

By making impact measurement simple, scalable, and comparable, we not only enable organizations to improve their products and services; we also help transform what it means to credibly measure impact, ensuring that the voices of those who matter most are always part of the story.

About the role: 

You’ll be an early engineer in a newly formed engineering team. This is a unique opportunity for you to learn, build, demonstrate, and subsequently own diverse components of our tech stack and evolve as we scale our business. As a core engineer in a small team, the role demands a high degree of self-drive and ownership, on a path to achieving outsized impact.

Your Primary Responsibility Will Be:

1) To advance our Integrated Data Capture And Insights Platform

2) To advance our web-based consumer products

In this role, you will:

• Work with a diverse multidisciplinary team across Engineering, Product & Operations, to translate product specs into clean, functional, production-ready code.
• Participate actively in defining of the systems architecture vision to better support our team’s needs
• Grow our technical capacity by mentoring other engineers and interviewing candidates
• Collaborate with team members to identify systems, practices & technologies that suit our needs the best
• Seek, learn, adopt and advocate industry best practices. Contribute towards the engineering culture
• Troubleshooting coding problems quickly and efficiently to ensure a productive workplace

About You: First and foremost, you bring compassion and dedication to this work because it matters to you.

You are a pragmatic and product-driven engineer who is interested in solving user problems and delivering value while taking into account tradeoffs between Business and Tech. You have a bias towards action: you get your hands dirty and actively tackle problems in a way that leads to the best outcomes and brings teams together. You successfully balance flexibility and rigour, using informed judgment to make decisions. You model critical thinking and introspection, taking strategic risks and growing from mistakes. You are decisive and bold, have a growth mindset, are an excellent communicator, and know the value of being a part of an effective team

Minimum Qualification:

• 4+ years of experience in software engineering building SaaS platforms & products, particularly frontend development
• Strong proficiency in JavaScript/TypeScript (ES6+), HTML, CSS and React. Working knowledge of other frameworks is desirable.
• Proficient in software design, modularity, testability and software quality
• Fast self-learner, with the willingness & interest to learn new technologies, languages & frameworks
• Strong problem-solving and decision-making skills

Additional desired qualifications:

• 4-7 years of overall experience in software engineering either as a Frontend engineer or a Fullstack engineer, with significant frontend experience
• Deep understanding of integrating with a variety of backends and APIs (ReST, GraphQL). Experience with node/Python/RubyOnRails is desirable
• Strong flair for usability, consistency, and balancing aesthetics with functional design.
• Experience working with data-intensive applications and data-visualisation libraries such as Chart.js, and D3.js is desirable
• Expertise in building debugging, improving the performance of web applications

Working with 60 Decibels

We are a fun, international and highly-motivated team who believes that team members should have the opportunity to expand their skills and career in a supportive environment. We offer a competitive salary, the opportunity to work flexibly and in a fun, supportive working environment. If this sounds like the role for you, get in touch!

60 Decibels is deeply committed to having a workplace that is inclusive and anti-discriminatory. We believe that our team must embody the compassion, listening, and sense of shared humanity that is so central to our goal as an organization. We are proud to be an Equal Opportunity employer and do not discriminate on the basis of race, religion, national origin, gender, sexual orientation age, marital status, veteran status, or disability.

As a growing company, we are building towards a more universally accessible workplace for our employees. At this time, we do use some cloud-based technologies that are not compatible with screen readers and other assistive devices. We would be happy to discuss accessibility at 60 Decibels in greater depth during the recruitment process.

 About our team and our culture: we are a fun and hardworking global team that is full of smart, mission-driven folks who combine an entrepreneurial spirit with a commitment to make a positive change in the world.  

We consistently hear from our clients that the best thing about 60 Decibels is the people. To get a feel for our slightly nerdy, not-take-ourselves-too-seriously vibe, check out our monthly newsletter, The Volume.

Compensation: 60 Decibels offers a competitive salary and benefits package and the opportunity to work in a flexible, fun and supportive environment. The salary range will be adjusted according to costs of living in our country offices. 

Extra Perks: We have an unlimited leave policy and 12 monthly recharge days, on the first Friday of each month. We are a globally distributed team and we give team members opportunities to cross-pollinate and visit our different offices. 

Want to get to know us a little better?

> Sign up to receive The Volume, our monthly collection of things worth reading.

> Visit our website at 60decibels.com.

> Read about our team values here. 

Qapita is a SaaS-Net startup with offices in India & Singapore. Qapita’s vision is to transform how equity is managed and traded in the private capital markets in this region. Qapita’s software solution seeks to automate the equity management process for startups including workflows around CapTables, ESOPs, Due-diligence, and transactions. Qapita’s market place solution seeks to facilitate liquidity to ESOP holders and shareholders via structured liquidity programs and secondary transactions. Qapita seeks to automate all processes for equity matters in private markets via its digital platform.

We are looking for a Senior Frontend Developer who is curious, craves for new challenges and loves to solve problems using latest technology. In this role, you will be responsible for developing and implementing user interface components using React.js concepts and workflows such as Redux, Flux, and Webpack.

You will also be responsible for profiling and improving front-end performance and documenting our front-end codebase.

Our Tech stack:

Frontend: React, Typescript, Html, SCSS

Backend: Linux (Ubuntu), ASP.NET Core, C#, Nginx, MongoDB, EventStoreDB

Responsibilities: As a Senior Frontend Developer, you will be

• Meeting with the development team to discuss user interface ideas and applications.

• Reviewing application requirements and interface designs.

• Identifying web-based user interactions.

• Developing and implementing highly-responsive user interface components using React concepts.

• Writing application interface code using TypeScript following React.js workflows.

• Troubleshooting interface software and debugging application code.

• Developing and implementing front-end architecture to support user interface concepts.

• Monitoring and improving front-end performance.

• Documenting application changes and developing updates.

Desired Skills and Experience :

• Bachelor's degree in Computer Science, Information Technology, or a similar field.

• Previous experience working as a React.js Developer (4+ years).

• In-depth knowledge of JavaScript, CSS, HTML and front-end languages.

• Knowledge of TypeScript a plus.

• Knowledge of React tools including React.js, Webpack, Redux.

• Knowledge of performance testing frameworks including Mocha and Jest.

• Experience with browser-based debugging and performance testing software.

• Excellent troubleshooting skills.

Requirements:

• Developing and implementing user interface components using React.js concepts and workflows.
• Developing user interface components and implementing them with a well-known React.js workflow.
• Building reusable components and front-end libraries for future use.
• Translating designs and wireframes into high-quality code
• In-depth knowledge of JavaScript and React concepts, excellent front-end coding skills, and a good understanding of progressive web applications.
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers.
• Develop a flexible and well-structured front-end architecture, along with the APIs to support the applications 

Peacock Engineering Ltd is a Gold-accredited IBM Premier Business Partner which has amassed over 300 person years of experience implementing business critical EAM (Enterprise Asset Management) solutions across a range of industries such as oil & gas, pharmaceuticals, utilities, facilities management, transport, and power generation. 

Peacock Engineering Ltd specialise in providing consultancy services and support for the IBM Maximo EAM software product and maintain a pool of highly experienced and capable consultants fully conversant with IBM Maximo and its functionality, capabilities, and opportunities for customisation to meet business need. 

Peacock Engineering’s Technical Services team is now looking for an experienced UI / Front End Developer who is proficient with React.js (16.8+) to join our international team of developers delivering innovative solutions to our major UK-based customers.

Your primary focus will be working on new user interface components which are modern, secure, performant, and easy to maintain - following well-known React.js workflows and recognised best practices.

You will coordinate with the rest of our multi-disciplined team working together on different layers of the solution architecture.  A commitment to collaborative problem solving, sophisticated design, and delivering a high-quality product is essential.

• Developing new user-facing features for our clients using React.js
• Translating functional requirements (User Stories/Tasks) and wireframes into high quality code with tests
• Working with architects, developers, and QA engineers to ensure that your work is testable, meets industry security standards and is written to deliver good performance/scalability.
• Perform application and solution development to meet project requirements.
• Develop and document detailed technical designs to meet business requirements.
• Manage multiple technical environments and support the development and testing processes.
• Identify areas of customization and optimization and provide solutions that meet the business requirements.

Experience working with the IBM Maximo software product within the following capacities:

• Tech. in Computer Science, Engineering or Business-related field and/or equivalent work experience.
• Thorough understanding of React.js and its core principles
• Minimum five (5) years of work experience in React application development.
• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Demonstrable expertise in software development in an Agile setting
• Ability to deliver well-tested code consistently in an Agile, CI/CD environment
• Experience with JavaScript Testing frameworks and principles (Jest preferable)
• Familiarity with newer specifications of ECMAScript
• Familiarity with RESTful APIs
• Knowledge of modern authentication/authorization mechanisms
• Familiarity with modern build pipelines and tools (Azure DevOps preferable)
• Experience with common front-end development tools such as Babel, Webpack/Parcel, NPM/Yarn, etc.
• Familiarity with Git
• Good time-management skills
• Great interpersonal and communication skills
• Good spoken & written English

• To bring industry knowledge world class capabilities innovation and cutting-edge technology to our clients in the Resources industry to deliver business value.
• To work with leading Resources client’s major customers and suppliers to develop and execute projects and reliability strategies.
• To harness extensive knowledge combined with an integrated suite of methods people and assets to deliver sustainable long-term solution.
• IBM MobileFirst certification
• JAVA/ SQL Skills

• Professional and committed, with a disciplined approach to work.
• Motivated and driven by finding and providing solutions to problems.
• Polite, tactful, helpful, empathic nature, able to deliver to the needs of customers.
• Has respect for others and their views.
• Technology minded and focused, enthusiastic about technologies.
• Analytical, able to raise from the detail and see the bigger picture.
• Dedicated to continually updating and upgrading own knowledge.
• Carries a mind-set of continuous improvement, constantly looking for better and more efficient ways of doing things.
• Values quality at the centre of all things in work.

Due to considerable amounts of virtual working and interaction with colleagues and customers in different physical locations internationally, it is essential that the successful applicant has the drive and ethic to succeed working in small teams physically but in larger efforts virtually.  Self-drive to communicate constantly using web collaboration and video conferencing is essential.

As an employee, you will be encouraged to continually develop your capability & attain certifications to reflect your growth as an individual.

• Develop and manage apps on React Native platform
• Analyse, code, debug, test, document & deploy applications
• Provide technical leadership and upgrade architecture design and solution to accommodate future expansion
• Ensure quality control processes are successfully employed.
• Experience in React-Native based app development is a must
• Experience in Mobile app development (Cross platform apps)
• Must have published at least 1 major React-Native app
• Knowledge of service workers implementation for Progressive Web Application (PWA)
• Demonstrated ability with HTML5, CSS3, Bootstrap, jQuery, and other JS frameworks React JS
• Development experience of UI (layouts, animations, etc.)
• Good understanding of Design and Architecture Patterns
• Understanding of iOS and Android Code signing process and deployment model
• Understanding of Unit Testing, Debugging Methodology used in React Native Apps
• Understanding on integration of native modules with React Native code
• Experience with caching and scaling techniques