Sr Frontend Engineer

Job Title: React.js Developer

We are seeking a talented React.js Developer to build and maintain high-quality web applications. The ideal candidate should have strong experience in JavaScript/TypeScript, React.js, HTML, CSS, and state management (Redux/Context API). You will work closely with our team to develop responsive UIs, integrate APIs, and ensure performance optimization.

Requirements:

• 2+ years of experience in React.js development
• Strong knowledge of JavaScript (ES6+), React hooks, and component-based architecture
• Familiarity with RESTful APIs, Git, and modern front-end tools
• Bonus: Experience with Next.js, Tailwind, or testing frameworks

The Opportunity At Certa, we are building the AI-native Operating System for global enterprise relationships. We have the clients (Fortune 100/500) and the robust backend technology. Now, under the guidance of our new Head of Design, we are elevating our experience to match the best consumer products in the world. We are looking for our First Design Engineer. You are the "missing link" between our pragmatic engineering requirements and our ambitious design vision. You won't just implement tickets; you will define how our product feels.

The Role This is not a standard Frontend Engineer role, nor is it a Product Designer role. This role is equal parts: Craft-focused Frontend Engineering: You write production-grade code, but you obsess over the details that others miss. Systems Thinking: You don't just build components; you build the architecture (Design System) that allows the rest of the team to build beautiful UI faster. Figma-to-Code Mastery: You bridge the gap between static Figma files and dynamic browser realities, moving fluidly between design and implementation.

What You Will Do

1. Architect the Design System & UI Patterns Take ownership of our internal design system. You will treat it as an internal product, creating a type-safe, accessible, and composable library in React & TypeScript. Manage the tokens, components, patterns, documentation, and governance required to scale design across a remote engineering team. Bridge the gap between Figma Variables/Tokens and code, ensuring a single source of truth for our visual language.
2. Make AI-Native UX Feel Trustworthy & Human Implement interaction patterns specifically for AI workflows: streaming states, progressive disclosure, and optimistic UI. Build for "explainability" and human-in-the-loop controls, ensuring users trust the system even when it automates complex tasks. Make complexity feel simple—especially when the system is performing sophisticated "smart" operations in the background.
3. Maximize Output with AI-Assisted Tooling Hyper-automate the mundane: Use AI coding assistants (Cursor, Copilot, etc.) to handle boilerplate and scaffolding, allowing you to spend 80% of your time on the 20% of the "feel" and "craft." Build tooling and guardrails (linting rules, visual checks, component playground workflows) that help the team ship high-fidelity UI consistently.
4. Bridge Design & Code (Figma-First) Live in Figma: You are expected to be as comfortable in Figma as you are in VS Code. You’ll tweak layouts, design missing states, and refine prototypes yourself. Push performance beyond just metrics: focus on rendering, bundle size, perceived speed, and interaction responsiveness. Raise the bar on accessibility and cross-browser behavior, ensuring the product is usable by everyone.

Must Haves

1. Expert Figma Skills: This is a primary requirement. You should be fluent in auto-layout, components, variables, and prototyping. You view Figma as a design environment and a technical spec.
2. AI-Assisted Workflow: You are a "power user" of AI tools (Cursor, Copilot, v0, etc.). You know how to leverage AI to move faster without sacrificing the quality of the final output.
3. Strong Frontend Foundation: Deep expertise in React + TypeScript with a track record of shipping complex, data-heavy UIs in production.
4. Demonstrated UI Craft: A portfolio showing obsession with spacing, typography, interaction detail, and motion. You likely have a "Folder of Inspiration" from the best apps in the world.
5. Design System Experience: Strong experience building and maintaining a design system: tokens, components, patterns, and documentation.
6. Accessibility Expertise: You build keyboard-first UX, understand screen reader behavior, and enforce correct ARIA usage by default.
7. Modern Tooling: Experience with Vite and modern frontend tooling; comfortable setting up and customizing JS tooling/build systems.

Why You? (The "Craft" Factor)

1. You are inspired by the design-engineering cultures of companies like Linear, Vercel, Family, or Arc (The Browser Company).
2. You get annoyed when a modal closes without an exit animation.
3. You understand that latency is a UX problem, and you use optimistic UI updates to make the app feel instant.
4. You believe enterprise software doesn't have to look like a spreadsheet from 2005—it should feel as fluid as the best consumer apps.
5. You are an "AI-augmented" engineer who uses modern tools to do the work of three people while maintaining the taste of an artisan.

Job Summary

We are seeking a skilled Frontend Developer with expertise in React.js and React Flow to design and implement dynamic, interactive user interfaces. You will be responsible for building scalable web applications and visual workflows that empower users to interact with complex data and processes intuitively.

🛠️ Key Responsibilities

• Develop responsive and high-performance web applications using React.js
• Design and implement interactive flow-based UIs using React Flow
• Collaborate with UX/UI designers to translate wireframes into functional components
• Optimize components for maximum performance across devices and browsers
• Integrate RESTful APIs and manage application state using tools like Redux or Zustand
• Write clean, maintainable, and well-documented code
• Participate in code reviews, testing, and continuous integration processes

✅ Required Skills

• Strong proficiency in JavaScript (ES6+) and React.js
• Hands-on experience with React Flow for building node-based editors or workflow diagrams
• Familiarity with state management libraries (Redux, Zustand, Recoil)
• Experience with HTML5, CSS3, and modern CSS frameworks (e.g., Tailwind, Styled Components)
• Understanding of component lifecycle, hooks, and functional programming
• Knowledge of Git, CI/CD pipelines, and agile development practices

💡 Preferred Qualifications

• Experience with TypeScript
• Familiarity with backend integration (Node.js, GraphQL, etc.)
• Exposure to data visualization libraries (D3.js, Chart.js)
• Understanding of accessibility and performance optimization

 Extensive (4+ years) knowledge of web technologies and building large scale web applications​

· Strong proficiency in Java Script​

· Expertise in Object-oriented programming​

· Understanding the fully asynchronous behavior of React.js (Redux)

· Solid understanding of user-centered design principles and MVC/MVP/MVVM patterns specific​

to front- end development​

· Good in problem-solving skills​

· Good in English communication (verbal and written)

• ·       3+ Yrs Solid knowledge of frontend development with a minimum of 2 years of work on ReactJS,/ React native 
• ·       Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• ·       Strong & thorough understanding of Reactjs and its core principles
• ·       Experience with popular Reactjs workflows such as Redux
• ·       Knowledge of isomorphic React is a plus
• ·       Familiarity with RESTful APIs
• ·       Familiarity with modern front-end build pipelines and tools
• ·       High coding standards - understanding of test coverage best practices & test pyramid concept
• ·       Familiar with Continuous Delivery approach
• ·       Experience with Distributed and Concurrent Systems, knowing the tradeoffs between stateful/stateless and synchronous/asynchronous architectures
• ·       Passion about technology and its relationship with product and user experience
• ·       Ability to work independently - identify problems, create plans and implement solutions to them

• Lead multiple client projects in the organization. 
• Define & build technical architecture for projects. 
• Introduce & ensure right coding standards within the team and ensure that it is maintained in all the projects. 
• Ensure the quality delivery of projects. 
• Ensure applications are confirmed to security guidelines wherever required. 
• ​Assist pre-sales/sales team for converting raw requirements from potential clients to functional solutions. 
• Train fellow team members to impose the best practices available. 
• Work on improving and managing processes within the team. 
• Implement innovative ideas throughout the team to improve the overall efficiency and quality of the team. 
• Ensure proper communication & collaboration within the team 

• 5+ Years of experience in developing large scale applications. 
• Solid Domain Knowledge and experience with various Design Patterns & Data Modelling 
• Must be well-aware of the latest technological advancements for relevant platforms. 
• Should have Research Oriented Approach 
• Solid at Logical thinking and Problem solving 
• Solid understanding of Coding Standards, Code Review processes and delivery of quality products 
• Experience with various Tools used in Development, Tests & Deployments. 
• Sound knowledge of DevOps and CI/CD Pipeline Tools 
• Solid experience with Git Workflow on Enterprise projects and larger teams 
• Should be good at documentation at project level and code level 
• Should have solid experience with Agile Methodology and process 
• Should have good understanding on Software UX 
• Proficient with communication and good at making judgments 

Expected Outcomes

• Growing the team and retaining talent, thus, creating an inspiring environment for the team members. 
• Creating more leadership within the team along with mentoring and guiding new joiners and experienced developers. 
• Creating growth plans for the team and preparing training guides for other team members. 
• Refining processes in the team on a regular basis to ensure quality delivery of projects- such as coding standards, project collaboration, code review processes etc. 
• Improving overall efficiency and team productivity by introducing new methodologies and ideas in the team. 
• Working on R&D and employing innovative technologies in the company. 
• Streamlining processes which will result in saving time and cost optimization 
• Ensuring code review healthiness and shipping superior quality code 

• Unlimited learning and growth opportunities 
• A collaborative and cheerful work environment 
• Exceptional reward and recognition policy  
• Outstanding compensation  
• Flexible work hours  
• Opportunity to make an impact as your work will directly contribute to our business strategy.
  ​

At Nickelfox, you have a chance to craft a career path as unique as you are and become the best version of YOU. You will be part of a team with a ‘no limits’ mindset in an inclusive, people-focused culture. And we’re counting on your unique perspective to help Nickelfox grow even faster.  

Are you passionate about tech? Dedicated to learning? Come, join us to build an extraordinary experience for yourself and a dignified working world for all. 
 

What makes Nickelfox a great place for you?

In Nickelfox, you’ll join a team whose passion for technology and understanding of business has driven the company to serve clients across 25+ countries in just five years. We partner with our customers to fuel their growth story and enable them to make the right decisions with our customized technology services and insights. All in all, we are passionate to see our customers win the day. This is the reason why 80% of our business comes from repeat clients.  

Our mission is to provide dignified employment and an environment that recognizes the uniqueness of every individual and values their expertise, and contribution. We have a culture that encourages everyone to bring their authentic selves to work. Our people enjoy a collaborative work environment with exceptional training and career development. If you like working with a curious, youthful, high-performing team, Nickelfox is the place for you.

About us:
Equal parts creative agency, engineering firm, and consultancy, Grappus has a reputation of doing things differently. We work with brands big and small, far and wide, helping them understand, prototype and deploy a broad range of custom tech. We value design and we cringe at bad UX. Each project is a clean slate, we don’t have frameworks, or any pre-made formulas. We’re not here to just grow big, make money and win awards. We’re here to crack the process of building truly innovative products from scratch. Products that make people say ‘damn’.

People at Grappus usually experience a highly accelerated career growth well beyond the narrow constraints of their ‘job description’. Here, the growth ladder is tailored to you. It operates exactly as fast as you can manage to grow. We think it's a waste when smart people are unable to make an impact. Our aim is to unleash your potential by giving you massive challenges and the freedom to solve them.

We’re in a fluid world, where we don’t know what technologies we’ll use next, or the projects we’ll work on. We’re actively searching for ways to shine a light on our blind spots, whether it is in the products we want to build, the problems we like to solve, or the company culture we try to create. That’s what makes life at Grappus so exciting. Grappus is an ongoing experiment and you are a part of it. We'll be a different company a few years from now because you are going to change it for the better. We can’t wait to see where you take us.

About the role:
We are seeking a Sr. Frontend Developer who has a knack for coming up with creative solutions to unique problems, planning development cycles and writing technical documentation while leading a team of developers. You can get in where needed to write clean, reusable, and performant code, with creative sensibilities to push projects towards perfection. You should have good time management skills and be able to work both autonomously and collaboratively with a cross-discipline team of product managers, strategists, UX designers, art directors, and developers. Most importantly, you have an eye for detail and the ability to make beautiful designs come to life through code.

What we’d like to see:
● Ability to write elegant and readable code
● Excellent problem solving skill and love technical challenges
● Lead a team of developers and showcase managerial skills
● Comfortable working in a team-oriented and collaborative environment
● Strong understanding of Agile and Lean software development processes and practices
● Stays plugged into emerging technologies/ industry trends and applies them proactively
● Knowledge of software best practices, like test driven development and continuous integration

Must have:
● BE/ B.Tech in Computer Science or a related field or equivalent practical experience
● Proven working experience in frontend programming for a minimum of 3 years
● Good understanding of frameworks like Bootstrap, Backbone, ReactJS, Redux and libraries like jQuery, LESS and Ajax
● Knowledge of performance testing frameworks including Mocha and Jest
● Experience with browser-based debugging and performance testing software
● Strong understanding of server-side scripting and Javascript frameworks, including jQuery
● Aggressive problem diagnosis and creative problem solving skills and client handling skills
● Ability to work and thrive in a fast-paced environment, learn rapidly and master diverse web technologies and techniques
● Experience with coaching and mentoring junior web developers
● Experience in working with a variety of external frameworks and libraries
● Proven experience integrating with, along with a deep understanding of, service-based Web APIs including REST and/or GraphQL
● Good knowledge of User Interface patterns and techniques to solve common UI problems

Nice to have:
● Familiarity and experience using a variety of architectural design patterns
● Personal projects or contributions to the open source community
● Knowledge of modern authorization mechanisms, such as JSON Web Token
● Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
● Strong organizational skills to juggle multiple tasks within the constraints of timelines
● Team player (those great personality types that people love to work with)
● Great communication skills

Why you’ll love it here:
(Besides working with our team with infinite charm)

● We have no fixed work timings or leave policy, you can take unlimited leaves and start your day whenever you want. (Just make sure others in your team don’t suffer)
● We don’t track these hours you put in or ask you to fill time sheets. We don’t believe in
micromanaging, if you’re struggling, ask for help. If someone else is, offer some support.
● We never mind if people make mistakes or screw up in any way, and offer full encouragement to help people learn fast by failing fast.
● We always encourage people to be completely candid, raise alarms, or log complaints
anonymously in our feedback tool, no matter how harsh.
● We are a ‘Work from Anywhere’ company, since passionate, driven people can work from
anywhere they want; their homes, or cafes, or mountains, or beaches, anywhere.
● We have a 15-day notice period. We want to build a place where people work willingly and passionately.

Designation: Angular / Frontend / Ui / UX Developer

Office Timing: Flexible (Day/Night shift, WFH & WFO)

Office Location: Ambala Cantt.

Experience: 3 – 5 yrs.

Essential Duties /Responsibilities/ Skill Set:

• Translation of the UI/UX design wireframes to actual code that will produce visual elements of custom analytics products and wide web applications.
• Take an active role on both sides and defining how the application looks as well as how it works.
• Experience developing new user-facing features.
• Experience in Angular Material, Angular 12 & Above, HTML, jQuery, JavaScript, Bootstrap.
• Knowledge of working with API integration using Swagger, Postman etc.
• Knowledge of working with Angular unit test frameworks Jasmine and Karma.
• Expert level experience in Angular is needed.
• Strong 3+ years of experience with JavaScript, HTML5, and CSS3, and writing cross-browser compatible code.
• Experience building reusable code and libraries for future use.
• Ensuring the technical feasibility of UI/UX designs.
• Optimize application for maximum speed and scalability.
• Assure that all user input is validated before submitting to back-end
• Collaborate with other team members and stakeholders.
• Experience/Knowledge of working with online productivity & collaborative tools like Invision, Figma is a plus.
• Knowledge in Python/Django Framework, and Azure Cloud is a plus.
  
  

Desired Skills:

• Strong UI/UX and design experience with the ability to simplify complex scenarios to the average user without losing functionality.
• Knowledgeable in web standards and responsive design.
• Familiarity with Agile project management principles.
• Confidence to drive assignments to completion.

• ReactJS
• AngularJS HTML/
• CSS
• Javascript/jQuery
• AWS Knowledge
• Microservices and Nanoservices along with a monolith.

• If you want to work on a high scale production grade mission-critical app in a fun, relaxed
• and sometimes crazy environment
• Opportunity to work in the region's ONLY AWS Certified Advanced consulting partner with a
• chance to get trained by AWS solution architects and get certified.