

Certa (getcerta.com) is a Silicon Valley-based tech product start-up that is automating the vendor, supplier, and other stakeholder onboarding processes (think background checks, agreements, and the works) for companies across industries and geographies. With multiple Fortune 500 and Fortune 1000 clients, at Certa's tech team, you will be working on stuff that is changing the way huge companies do business.
Must Haves:
- Experience developing enterprise-grade quality software.
- 3+ years of experience building large-scale front-end applications using React.
- 3+ years of experience using type-safe JavaScript-based languages, such as TypeScript.
- Understanding of modern frontend ecosystems, including Bundling(preferably using vite), Linting, Testing and Releasing
- Success with mentoring mid-level & junior Engineers.
- Experience in Agile software development methodologies.
- Experience writing automated tests (e.g., Vitetest, Cypress, Jest, Testing Library).
- Experience in building, scaling & maintaining a design system from scratch.
- Experience in improving rendering as well as delivery performance for front-end applications.
- Experience in writing semantic HTML.
- Experience in building scalable, responsive, and cross-browser-compatible web applications.
- Experience in a peak-performance organization, preferably a tech startup.
- Experience working with a remote team.
- Data analysis experience, and understanding of how analytics can help with product decisions.
Bonus:
- Experience building integrations and data synchronizations with event pub/sub-models.
- Experience with WebGL
- Experience in building offline applications using Web Workers
- Open source contributions.
- Running his/her own blog.
- Experience with building 100% keyboard and screen reader-accessible applications.
- Experience setting up and customizing JavaScript tooling and building systems.

About Certa
About
Certa’s no-code platform makes it easy to digitize and manage the lifecycle of all your suppliers, partners, and customers. With automated onboarding, contract lifecycle management, and ESG management, Certa eliminates the procurement bottleneck and allows companies to onboard third-parties 3x faster.
Tech stack


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- Proficiency in Angular (v8+) and TypeScript.
- Strong knowledge of HTML5, CSS3, and JavaScript/ES6+.
- Hands-on experience with RxJS for reactive programming.
- Experience with state management libraries like NgRx or similar.
- Familiarity with RESTful APIs and JSON data structures.
- Understanding of authentication and authorization mechanisms (OAuth, JWT).
- Experience with Angular CLI for project setup and management.
- Proficiency in browser developer tools for debugging.
- Strong experience with Jasmine, Karma, or other testing frameworks.
- Familiarity with build tools like Webpack or Vite.
Front end developer | Angular, CSS + .NET
Are you...
- Interested in working at a successful, well-funded scale-up where every team member can make a huge contribution?
- Keen to make software that people will use every single day to make their lives easier?
- Excited to work on greenfield projects with responsibility and independence?
- Ready to develop and use your skills across our frontend, backend and mobile offerings?
- Meticulous about quality, and gifted with a strong desire to write beautiful code?
About the company
KeyNest solves the key exchange problem for Airbnb users. Our worldwide network of over 4,000 shops store keys so that Airbnb guests / cleaners / contractors can pick them up whenever is convenient for them. As a global partner of Airbnb we’ve checked-in over 2 million guests.
Why we need you
As the entire Airbnb ecosystem increasingly relies on KeyNest, our customers expect us to integrate additional features without reducing the ease of use that our customers love. This is why we continue to invest in beautiful, intuitive user interfaces that integrate with every tool and are used by our customers, their guests and staff, as well as our own staff.
A product manager, a team lead, two full-stack developers, one mobile developer, and a UX designer make up our product team. Who will serve as your mentor. We are looking for a developer who cares about how their code affects users so that we can work together.
With a genuine passion for high quality work, attention to detail and readiness to own your own projects, you will be looking for a new and exciting challenge which allows you to use your experience to drive change and maintain the high standards of our organisation.
Our Tech Stack
- C# MVC modern tech stack
- .Net Core
- Front end web in TypeScript & Angular
- Test Driven Development (TDD) and follow SOLID design principles.
- EF 6.0
- SQL Server 2017
- Agile experience (Scrum, Kanban)
- TFS
- Cloud hosted in Azure with micro-services architecture
Your qualities
- Proficiency with Javascript & Angular.
- Proficiency with HTML/CSS. Being able to create Figma designs from scratch.
- You have experience with back end technologies such as .NET Core.
- Track record of building great products
- You’ll love the idea of being a big part of a small team. Current team size is 5.
- Motivation and ambition to succeed in a fast-paced environment
- Not afraid to take on responsibilities
What we offer
- Crucial role in a funded, dynamic & fast-growing scale-up shaking up the sharing economy
- Competitive salary based on relevant experience
- Flexible working for our most committed staff
- Unparalleled opportunities to develop your career as the company develops rapidly
If you want to join the KeyNest team, please get in touch – we look forward to meeting you.
We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

About us:
HappyFox is a software-as-a-service (SaaS) support platform. We offer an enterprise-grade help desk ticketing system and intuitively designed live chat software.
We serve over 12,000 companies in 70+ countries. HappyFox is used by companies that span across education, media, e-commerce, retail, information technology, manufacturing, non-profit, government and many other verticals that have an internal or external support function.
To know more, Visit! - https://www.happyfox.com/
We’re looking for an experienced Technical Lead – Frontend Engineer to join our growing engineering team to help build and maintain HappyFox’s product offerings.
What you can expect as a Technical Lead at HappyFox:
- You will consistently ship features and improvements and lead a team of engineers working on our product roadmap.
- You will oversee software architecture, Git workflows, and CI/CD processes and perform code reviews to ensure exceptional code quality.
- You will actively work towards identifying, minimizing, and managing technical debt in the codebase.
- You will improve the development experience and the quality of the codebase.
- You will define our internal standards for coding style, maintainability, and best practices for a large-scale web application.
- You will uphold the best practices and coding standards for the team through code review and technical feedback.
- You will take responsibility for key technical architecture and design decisions.
- You will take ownership of the stability and performance of the services that you work on.
- You will contribute to the strategic vision and long-term roadmap in your area of expertise.
You should apply if:
- You have 2+ years of experience in a technical lead role designing and building single-page web applications.
- You have 8+ years of relevant professional experience in building web applications with javascript frameworks like Ember.js or React.js.
- You have deep knowledge of HTML, CSS, and JavaScript
- You have experience building single-page apps and a good understanding of the best practices and coding patterns.
- You have a passion to dig into technically complex problems to troubleshoot and figure out a solution.
- You have a desire to continuously improve and ship the best quality product.
- You have a pragmatic approach to making sure technical decisions align with actual business needs.
- You have a good understanding of the trade-offs when building for product value, reliability, or performance.
- You have excellent communication skills with the ability to discuss and explain your point of view clearly and effectively.


• Technical end-to-end design for stories by collaborating with business analyst/product owner, technical architect and clients
• Implement stories end-to-end, which includes Frontend, Backends for Frontend (BFF), Caching and also service orchestration in some cases) using best engineering practices like test-driven development, SOLID principles and consideration of non-functional requirements like performance, scalability, security or cloud readiness (as applicable) at the story level
• Automates testing at unit, module and integration level as needed using tools relevant for the platform (e.g. Jasmine, Jest, Karma, Webdriver.io etc.)
• Focus on quality by implementing best practices like logging, calling out technical debt, meeting KPIs using code quality tools like SonarQube, ESLint (customize and sync with Sonar), Stylelint/Sasslint and so on.
• Hands-on with automating redundant work, like common component structure, both in terms of scaffolding as well as using the right design patterns / creating abstractions.
• Mentor junior engineers in helping review code, guiding on technical decision making
Key Requirements:
• 4-9 years’ experience
• Hands-on knowledge of HTML5, CSS3, JavaScript
• Hands-on experience working with Object Oriented JavaScript (OOJS), JavaScript - and practical uses in building complex interactive experiences, primarily with ECMAScript 2015+. You should be up-to-date with new specifications (different stages), and also, using transpilers like Babel to use features from all stages
• Good understanding of creational and structural design patterns in JavaScript
• Experience working with Single Page Applications (SPA) with universal rendering capabilities.
• Good understanding of React.js, its core principles - lifecycle methods, virtual DOM etc. and at least 6 – 12 months hands-on experience with the same
• Understanding of one-way data flow and the Flux architecture.
• Understanding of stateful (container) vs stateless (presentational) components and how to break down the application page into components
• Core understanding of how React’s state management works out of the box.
• Understanding of different CSS architectures that go hand-in-hand with React.js application development. Pros and cons of component-level CSS vs global and where to apply each
• Thorough understanding of Webpack bundler (version 2+).
• Good understanding of the Web Components standard.
• Hands-on experience with building Progressive Web Apps (PWAs) on any framework.
• Hands-on experience with Frontend Performance Optimization – especially in a React application with respect to resource loading strategy, CPU/Memory profiling on the browser.
• Hands-on experience with test-driven development using Jest or equivalent. Familiar with snapshot testing, code coverage. Experience working with utilities like Enzyme
• Experience using fluid grids, and building responsive/adaptive websites using Bootstrap etc.
• Understanding of SEO and accessibility and making it part of the development workflow
• Moderate to Strong graphics manipulation/optimization skills using Photoshop is a plus.

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 REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.
● Experience with user interface design.
● Knowledge of isomorphic React is a plus
● Familiarity with RESTful APIs
• Developing eCommerce sites on Shopify platform
• Migrating websites from other eCommerce platforms to Shopify
• Extending Shopify’s functionalities to next level using storefront APIs, liquid programming, meta fields, etc
• Integrating third-party and platform supported apps in the sites
• Setting up payment integration, shipping methods and taxes in Shopify platform
• Page speed optimization of Shopify sites
• Implementing SEO/CRO best practices in Shopify sites
• Transforming complex layout PSDs into pixel-perfect presentation-layer HTML5/CSS3 templates
• Creating responsive website designs
• Working under tight deadlines
• Handling multiple projects at the same time
• Producing high quality of work with a strong focus on detail
• Thoroughly QA work prior to submission

Builds reusable components and front-end libraries for future use.
Experience with popular React.js workflows (such as Flux or Redux).
Familiarity with RESTful APIs.

Job Description
We are looking for a great 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. 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
- SAAS Experience is a plus
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
- Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
- 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)




