Frontend Developer

We are seeking a skilled Senior UI Developer to join our dynamic team. The ideal candidate will have extensive experience in designing and developing user-friendly, visually appealing, and responsive web interfaces. You will work closely with UX designers, backend developers, and product managers to translate design concepts into functional UI components while ensuring high performance, scalability, and accessibility.

Key Responsibilities:

Design and develop scalable, responsive, and performant user interface components.

Define and enforce UI coding standards, best practices, and guidelines.

Collaborate with UX designers to translate wireframes and prototypes into high-quality code.

Work closely with product managers to understand requirements and translate them into technical solutions.

Mentor and coach UI developers, providing guidance and support on technical challenges.

Conduct code reviews to ensure code quality, performance, and adherence to design principles.

Stay updated with the latest UI trends, technologies, and best practices.

Drive innovation and continuous improvement within the UI development process.

Required Skills and Qualifications:

Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent work experience).

Proven experience (>8 years) as a UI developer with expertise in HTML5, CSS3, JavaScript/TypeScript

Proven experience in front-end frameworks React (must), Angular(good to have), Vue.js(good to have).

Solid understanding of responsive web design, accessibility, and cross-browser compatibility.

Strong problem-solving skills and ability to troubleshoot complex issues.

Excellent communication skills with the ability to collaborate effectively with cross-functional teams.

Experience with version control systems (e.g., Git) and CI/CD pipelines.

Experience with UI testing frameworks and tools (e.g., Jest, Cypress) is a plus.

Knowledge of UX design principles and familiarity with UX design tools (e.g., Sketch, Adobe XD) is desirable.

Ability to prioritize and manage multiple tasks in a fast-paced environment. Experience building a UI for multi-tenant SaaS platform. Experience building UI with user level customization, feature flags Experience optimizing for performance and faster Time To Frist Byte and streaming.

We are looking for a Senior UI Developer who is expert in React and good to have other frameworks like Angular etc (but not a must) and who can guide the rest of the UI team and interface with cross functional teams

Job Types: Full-time, Permanent

We are seeking a highly motivated Software Development Engineer with expertise in building scalable, extensible and user-friendly web applications. You will work with a fast paced Product Engineering team to build efficient and reusable web applications for mobile and fixed devices. 

What you’ll do:

• Architect, Design, Code reviews and build scalable applications.
• You will be engaged in identifying and addressing performance bottlenecks, and collaborate with other team members to innovate current/new products. 
• Identify, communicate and implement best practices for application engineering. 
• Ensure high scalability and performance

• You will advocate for good, clean, well-documented and performing code; define and follow standards and best practices for front-end development.

We’d love for you to have:

• Experience: 1-3 yrs recent experience of working in a scalable web product firm
• Education: B.Tech/M.Tech  in Computer Science from Top ranked colleges in India
• Excellent software development skills in developing web applications over client-side frameworks - Backbone, React (preferred) and/or angular frameworks (preferred); and server-side frameworks like node.js
• Excellent programming skills in object-oriented, modularised JavaScript, Typescript (preferred)
• Strong knowledge and working experience in server-side Event-driven programming using Node.js
• Excellent programming skills in Javascript,  jQuery, AJAX, YUI.
• Passion for writing optimized code using JS best practices  and design patterns
• Experience with JS or Java-based Unit/Integration Testing using Selenium, Appium, Selendroid
• Hands-on experience in building scalable web applications
• Excellent problem solving and debugging skills
• Good Knowledge of version control - GIT (preferred)
• Experience with the full software development lifecycle, design, develop, debug, document, and deliver (especially in a multiple site organization)
• Strong verbal and written communication skills
• Ability to deliver great results in an agile development
• Good to have: Working knowledge of web standards (i.e., REST) and OOPS
• Good to have: Experience in Data Structures, Algorithms and their optimization

Even if you don’t meet all of these qualifications above, we’d still love to hear from you. Tell us about your unique qualifications in your cover letter.

CaaStle is committed to equality of opportunity in employment. It has been and will continue to be the policy of CaaStle to provide full and equal employment opportunities to all employees and candidates for employment without regard to race, color, religion, national or ethnic origin, veteran status, age, sexual orientation, gender identity, or physical or mental disability. This policy applies to all terms, conditions and privileges of employment, such as those pertaining to training, transfer, promotion, compensation and recreational programs.

Senior developers only

Min 5 years of real experience 

Front End/Web react.js

Remote work

(We prefer individual developers over agencies or IT providers)

Job Description: We are looking for a UI Developer HTML & CSS Developer responsible for the client side of our service. Your primary focus will be to implement a complete user interface in the form of a desktop and mobile web app, with a focus on performance.

Key Skills: HTML5, CSS3, Bootstrap, Jquery and JavaScript.

React.js, HTML5, CSS3, Javascript
Client side scripting
Experience in responsive design, PWA, asynchronous request handling, complex front end displays like flowchart, graphs etc.
Knowledge of JSON/XML
Knowledge of Web Fundamentals, Browser Working, REST API
State Management with Redux
Latest APIs of HTML5

• Overall 3+  years of software development experience in building web-based and highly scalable applications. 

• Excellent understanding of core computer science concepts like algorithms, data structure, system design, OOP, etc. 

• Deep knowledge and development expertise in React Native/ReactJS 

• Hands-on coding experience in developing multi platform (iOS & Android) mobile applications with REST APIs.

• Experience working as a Full stack developer is a big plus.

• Experience in building single page applications or Javascript heavy front end applications in ReactJS is a big plus.

• Experience working in cloud environments with CI/CD and infrastructure automation is a big plus.

• Experience working in an agile team with software engineering practices like automated testing, test-driven-development, continuous integration, etc is a big plus. 

• Strong oral and written communication.

About Company: Spica Systems (https://spicasys.com )

Spica Systems is a Silicon Valley based start-up, established in 2019 and are recognized as experts in building products and providing R& DandSoftware Development services in wide range of leading-edge technologies such as LTE, 5G, Cloud Services (Public -AWS, AZURE, GCP, Private -Openstack) and Kubernetes. Ithasa highly scalable and secured 5G Packet Core Network, orchestrated by ML powered Kubernetes platform, which can be deployed in various multi cloud modealong with a test tool. Headquartered in San Jose, California, we have our R& D centre in Sector V, Salt Lake Kolkata.

• Looking for a Software developer who will work on the product's Web UI side
• Hands on and working experience with React JS
• Experience in WebUI using Javascript technology.
• Experience: 2-4 years of React development in a team environment
• In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
• Knowledge of REACT tools including React.js, Webpack, Redux.
• Experience with user interface design. Knowledge of performance testing frameworks including Mocha and Jest.
• Experience with browser-based debugging and performance testing software.

Education: Bachelors/Masters in Computer Science, IT or Mathematics or Engineering

Traits: Quick learner, open minded, willing to learn

Your Responsibilities

• You will be a rockstar front end engineer bringing to life designs and solutions created in collaboration with designers and product managers. You will be responsible for converting the requirements to fast, optimised, usable interfaces, loved by our users.
• You will be the main source of knowledge on everything “front end” related and guide the team to make correct technical decisions to ensure the speed and scale of the solutions deployed.
• Collaborate daily with back-end developers and web designers to improve the usability
• You will be a key person in ensuring that agile processes created by the team are adhered to and you actively contribute to the improvement of these processes. You will be responsible for estimating your tasks and ensuring that promised timelines are met.
• You will be responsible for the performance, security, scalability, reusability and quality of the applications under you. You will collaborate with senior engineering managers/architects to refine & improve your solutions. You will cascade the same culture across the team by supporting and mentoring team members, helping build truly scalable applications
• You will need to collaborate closely with product managers, designers and business stakeholders to achieve predictable results at a rapid pace. 
• You will be able to handle competing priorities and chart the best course of action for yourself and your team members ensuring blockers are removed
• You will help in attracting and evaluating tech talent to help build the engineering brand of the organization.

Desired background & skills

• 3-9 years of experience as an engineer at top tier digital product companies across consumer or SMB. 
• 3+ years of experience in working on front end JS frameworks like React/Angular/Vue
• Excellent knowledge of working with responsive and adaptive designs. Expert in HTML5, JAVAScript, JQuery & CSS. Basic knowledge of SEO.
• Experience of design collaboration tools such as Zeplin, Figma, XD, Invision. 
• Bonus if either you’re a full stack developer with knowledge of the back end or have experience with cross-platform mobile technologies such as React Native or Flutter.
• You have strong problem-solving skills, data structures and algorithms. 
• Passion to work in an exciting, fast-paced environment. conscientious, curious, hard-working individual who craves accountability and loves to solve complex problems.
• You get a kick out of people using and loving your produced outcome.