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Fullstack Javascript Developer Saas And Payments

🌐 Remote💼 Full-time💰 $35,000–$35,000🗓 2026-07-26

Core

Building SaaS products for seamless Open Banking payments across e-commerce, in-store, and invoice scenarios.

Role type

Fullstack JavaScript Developer

Builds

Open Banking payment solutions for online, e-commerce, and in-store transactions

Domain

Fintech / Payments

Deliverable

production ML models | product features

Required skills

Node.js, Express, React.js, MySQL, Postgres, MongoDB, Redis, Jest, Mocha, Gitflow, TDD, BDD

Preferred skills

API Blueprint, StoryBook

Technologies

Node.js, Express, React.js, MySQL, Postgres, MongoDB, Redis, Jest, Mocha, GCP

Responsibilities

Develop backend services using Node.js and Express; Build frontend interfaces with React.js; Design and manage databases (MySQL, Postgres, MongoDB, Redis); Write unit and integration tests using Jest and Mocha; Implement code practices including Gitflow, TDD, and BDD.

Seniority

Mid-level (5+ years experience)

Rewrite
## About the role Set up in December 2019, fena is a well-funded startup in fintech and payments. Fena powers up seamless access to Open Banking. Fena offers Open Banking payments for online, e-commerce and in-store transactions. We are looking for a Fullstack JavaScript Developer with some experience in payments. So if you are a go-getter who would like to embark on the journey with a relatively new business; then we would love to have a chat with you. ## Responsibilities - Backend Development using Nodejs, Express, GCP, and REST APIs - Frontend Development using React.js - Database Management with MySQL, Postgres, MongoDB, and Redis - Testing implementation using Jest and Mocha - Adherence to code practices including Gitflow, TDD, BDD, documentation, and tooling (e.g., API Blueprint, StoryBook) ## Requirements - At least 5 years of experience in the following areas: - Backend Experience: Nodejs, Express, GCP, REST APIs - Frontend Experience: React.js - Database Experience: MySQL, Postgres, MongoDB, Redis - Testing Experience: Jest, Mocha - Code Practices: Gitflow, TDD, BDD, documentation and tooling (e.g., API Blueprint, StoryBook) ## What we offer - Generous equity in the company - Company pension - Flexible working hours - Flexible remote working - Ability to grow the team as the company is scaling ## About the company Fena - Seamless access to Open Banking payments We believe that costly card payments and outdated infrastructure shouldn't hamper businesses, and with Fena, they don't. Fena (formerly Faizpay) is rapidly growing, using new regulations to enable seamless access to Open Banking. London based, but with staff across the globe, we are building products for customers across multiple geographies. Our solutions are built to improve payments for for everyone. Business of all sizes can save up to 85% vs card payment fees, reduce fraud, and improve the user experience with technology designed for the modern day. Some example use cases include: - eCommerce: Easy to install solutions requiring only a few lines of code, or plug-ins for solutions like WooCommerce, merchants can quickly add open banking payments to their checkout to reduce their costs, remove chargebacks, and minimise fraud. - Small Retailers: In-store or in-person payments using our merchant app. Removes the need for a card terminal, instead using a mobile and QR code. Retailers can accept bank transfers as seamlessly as card payments for a fraction of the cost. - Invoice Payments: Users can insert a QR code or payment link onto invoices to ensure they receive the right amount, every time. Generate these payment requests manually, or connect your account via API to automatically generate requests.
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