React.js Developer

Position Overview: Front-End Developer (Next.js)

We are seeking an experienced Front-End Developer with strong hands-on expertise in Next.js and React.js. The ideal candidate will build and maintain scalable, responsive web applications using modern front-end technologies and best practices in performance, SEO, and rendering techniques.

Key Responsibilities

• Develop and maintain responsive, scalable web applications using React.js and Next.js
• Implement CSR, SSR, and SSG using Next.js best practices
• Build reusable, modular UI components following clean front-end architecture
• Integrate and manage REST APIs for data retrieval, caching, and error handling (React Query or similar)
• Optimize applications for performance, SEO, and accessibility
• Collaborate with backend engineers and UI/UX designers to deliver high-quality user interfaces
• Debug, test, and document code to ensure maintainability and scalability

Required Skills

• Strong knowledge of Next.js fundamentals (routing, rendering techniques, API routes)
• Proficiency with React Hooks and understanding of component lifecycle
• Solid experience integrating REST APIs and handling errors effectively
• Familiarity with state management libraries such as React Query, Redux, or Zustand
• Strong skills in JavaScript (ES6+), HTML5, and CSS3
• 7–10 years of front-end development experience

Responsibilities

• Build applications using JavaScript frameworks such as React.js, Vue.js or svelte.js

• Build reusable UI components, ensuring that UI code base is scalable and maintainable

• Ensure the technical feasibility of UI/UX designs

• Optimize application for maximum speed and scalability

• Good in writing unit test cases, and can follow test driven development approach

• Participate in user experience design and architecture initiatives

• Collaborate with other team members and stakeholders to ensure smooth delivery and elicit new

requirements

• Perform troubleshooting steps, if any, in the phase of implementation, customization, and

configuration

• Having good debugging skills and proficiency in tool to build next-generation web apps

Mandatory Skills

• Knowledge of Functional and OO JavaScript/ES6

• Built web Applications using HTML5, CSS3, and JavaScript with Frameworks like React.js(Hooks

and context API), Vue.Js and svelte.js

• Basic understanding of Typescript and type language concepts

• Clear fundamental understanding of server-side rendered apps, experience with frameworks like

Next,js or Nuxt.js is the Best

• Good understanding of lib and frameworks like Webpack (4.0), lodash, any charting lib like d3.js or

Victory

• Expertise in using JavaScript state Management libraries such as Redux or Mobx

• Prior experience in building responsive design layouts using a formal framework like Material UI.

• Familiarity with best practices (web security concepts, ensuring browser & device compatibility,

etc.)

• Experience in development and debugging tools for cross-browser issues

• Working knowledge of integrating with RESTful APIs for server-side functionality

• Ability to work well individually and in a group setting, under pressure and deadlines

Requirements

• B.Tech/ B.S. or M.Tech/ M.S. in Computer Science, IT or related field.

• 5-8 years of experience.

Desirable Skills

• Hands-on experience with using Git (handling branching and merging), any DevOps pipeline,

• Experience with Agile methodologies

Roles and Responsibilities :

• Lead the delivery of high quality, innovative, flexible, cost-optimized, and scalable technical solutions that meet business requirements
• Design, Develop, test, and maintain software applications with MVC architectures, Microservices, and scalable cloud-native apps.
• Perform hands-on coding and provide thoughtful code reviews
• Mentor and lead team members to continuously improve quality and productivity of deliverables
• Demonstrate ability to work within an agile team as well as collaborate with many other teams on design and implementation strategies. Follow SCRUM Agile Development methodology
• Effective Communication Skills- An ability to express your ideas to the recipient & Co-ordinate and communicate with cross-functional team along with the client's team
• Problem Solving, Hustler - Get Stuff Done, Self-Disciplined Open-minded, User-Focused, Adaptive
• Lean Principles & Analytical Thinking
• Project planning, timelines, and milestones for execution and deliverables
• Participate in the Evaluation Review of your team member

Primary Skills

• Experience in building an enterprise web application using ReactJS as the frontend framework
• Experience with Redux and React Hooks
• Expert in HTML5, CSS3
• Experience in Bootstrap4 or CSS pre-processor like Less or Sass is highly desirable
• Strong knowledge of best practices and modern web design trends is necessary.
• Some experience with modern web-based typography.
• Excel at rapid prototyping and at writing good code.
• Experience with testing/debugging in multiple browsers and platforms.
• Expertise in using JavaScript
• Should have worked on REST client and WebSockets
• Should be able to write Unit testing using any one of the frameworks like Cypress, Jasmine, Karma, Jest, Enzyme, or any other similar framework.
• Should have experience in either one of the Build scripts like Gulp or Grunt or Webpack
• Low-Latency UI, Page optimization, and bundle build+caching
• Problem-solving and debugging skills
• Component-based architecture

Intro

EAGLE Power Holdings aims to launch a portfolio of new energy retail brands, all of which enjoy the efficiency of a single technology platform. We want to do more than offer cheap "green" tariffs, and believe that our range of engaging brands can identify with shifts in consumer preferences (e.g. growth of EV usage), with the value of local communities, and with proactive support of broader ESG causes.

Our long-term strategy is technology-driven, and involves unlocking value through the digitalisation of processes around customer acquisition, engagement, and retention.

Developers at EAGLE flourish in an agile process where collaboration and ego-free communication is valued. We believe in developing working software throughout the entire product development process. We engage in product thinking as a team, and cross-functionality among product managers, designers, and domain experts is promoted.

How you fit in

Engineering is the executional function of EAGLE's software delivery wing. As a Senior Frontend Developer, you are expected to take control of complex B2C projects being built from scratch. Moreover, not only are you expected to write clean, tested, and maintainable code but you will also be a central part of a product team that iterates constantly, ships regularly, and learns continuously. You will have the creative freedom for learning, experimenting, and responsible risk-taking in a startup environment.

What your role consists of:

• Collaborate with engineers, UI/UX designers, and product owners to build & ship new features and maintain/enhance existing ones
• Design & develop engaging front-end and user interface solutions to address complex and valuable business problems
• Implement best practices of test-driven development, automated deployment, refactoring and code standards
• Tackle complex problems, consider multiple solutions, and determine the best course of action
• Assist with the API design, development, and documentation of our UI kit
• Debug production issues across services and multiple levels of the stack

• Help inform product prioritisation and scoping decisions by evaluating technical complexity and risk

• Improve engineering standards, tooling, and processes

• Maintain technical documentation

What you bring to this role:

• 3+ years experience working with JavaScript, HTML, CSS & React in a distributed, collaborative, agile environment while delivering solutions on a regular cadence
• An ownership mindset: you should look not only at what you’re asked to do, but ask why you’re doing it and how it impacts on the rest of the product, our customers, and whether it makes sense
• A deep understanding of React and an eye towards writing efficient, performant, and tested code
• Experience in core aspects of web application development, including design, development, performance, integration, analytics, usability, and accessibility
• Experience developing applications from the ground up
• Proven ability with interaction/UI design
• Excellent communication skills and ability to give and receive constructive feedback
• Passion for the whole product process. You will have your specific areas of focus, but we find those that are passionate about the bigger picture collaborate best with cross-functional teams
  
  

Nice to have

• Portfolio showcasing previous work with interaction/UI design

Where we are

While the company is registered in the UK, the software delivery wing is being built to be remote-first. Whether you prefer to be in situ or a digital nomad (or anything in between), you are welcome.

What’s in it for you

We offer competitive salaries based on prevailing rates in your local employment market, but there is further room to negotiate if you are the right candidate.
In addition to your basic package, you can expect to receive the following benefits:

• Flexible working hours
• Unlimited annual leave
• On-the-job coaching, and access to mentorship by industry and domain thought leaders
• Full or partial sponsorship for professional/skill development courses, certifications, and other learning opportunities (evaluated on a case-by-case basis)
• Monthly allowance package for remote working (coworking membership or cash allowance)

About EAGLE Power Holdings

In a nutshell: Transforming energy retail and supply through cutting-edge software and AI technology

The venture is in ‘stealth mode’ as we lay the foundations for blast-off. It has been launched by a team with a history of entrepreneurial successes. These include one in the climate change space which services the Californian and North America carbon markets, and another which provides highly refined machine learning software to the energy arena in Asia. Both companies were acquired last year. 

This start-up was launched in London at the end of 2020, and will focus on the deregulated energy market in GB. The mission is to discover, or invent, a viable business and operational model for energy retail within the near-zero-cost energy ecosystem that the world is moving towards. This transformation is driven by the ever-decreasing prices of renewables and alternative generation, and by the exponentially growing volumes of national energy system data. We believe these factors have yet to truly disrupt the market, and intend to accelerate the sharing of value back to consumers.

Senior Frontend Developer || CSS, HTML, JavaScript, React.js|| 3+ years exp 

• The UI developer will produce robust front end for advanced financial banking and trading applications connecting with server side using micro services
• 3+ years of relevant experience in front end development using React.JS.
• Strong knowledge of Web development technologies, including HTML5, CSS3 etc
• Should have a knowledge of java script libraries like ag-grid, datagrid, chart js, D3 js etc
• Strong experience in developing UI applications showing large amount of data in grid format.
• Must have good experience of testing frameworks like mocha/chai, jasmine etc. for React JS.
• Excellent knowledge of Java and spring, with experience of use in a professional environment