Senior Software Engineer

NewDay; London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading financial technology company in London seeks a Mid-Senior level engineer to develop impactful applications using React and Node.js. This full-time position offers the opportunity to innovate and enhance products while contributing to an inclusive work culture. Candidates should have a strong background in testing, Agile methodologies, and experience with CI/CD pipelines.

Qualifications

• Proven experience in crafting robust, scalable interfaces with React and TypeScript.
• Strong skills in developing high-performance services using Node.js.
• Experience in writing semantic, accessible front-end code.
• Hands-on experience with CI/CD pipelines and modern deployment patterns.

Responsibilities

• Build and deliver impactful business-critical applications.
• Create innovative features to enhance existing products.

Skills

React expertise

Node.js

Testing skills

Front-end code development

RESTful APIs integration

Agile methodologies

Azure cloud services

Test Driven Development (TDD)

Automated testing with Playwright

Monorepos management

CI/CD pipeline management

Storybook knowledge

Job description

Overview

NewDay is building an extraordinary engineering team enabled by modern technology. We empower our people to contribute to an inclusive culture, to thrive, and to grow as engineers. We serve close to 5 million customers across the UK with a purpose to help people move forward with credit. Our technology platform and mobile apps are central to our mission.

How will your role contribute at NewDay?

What you will be doing

• Building and delivering business-critical applications that make a real impact for our customers
• Creating innovative new features that level-up our existing products

Your Skills and Experience

• Proven React expertise with TypeScript to craft robust, scalable interfaces
• Node.js for developing high-performance services and APIs
• Solid track record in testing — from code quality and security to customer journeys and accessibility
• Deep understanding of writing semantic, accessible, and modular front-end code that lasts
• Skilled in integrating with services via RESTful APIs
• Hands-on experience with agile software development methodologies
• Familiarity with Azure cloud services and modern deployment patterns
• Experience applying TDD (Test Driven Development) for rock-solid code
• Practical skills with Playwright for automated end-to-end testing
• Comfort working with monorepos using tools like Turborepo or Nx
• Hands-on experience setting up and running CI/CD pipelines
• Knowledge of Storybook, atomic design principles, and design language systems

Equality and Diversity

We are an equal opportunity employer and value diversity at our company. We want all our colleagues to feel able to bring their whole selves to work. We will not discriminate on the basis of age, physical or mental disability, gender reassignment, marriage and civil partnership, pregnancy and maternity, race (including colour, nationality, and ethnic or national origin), religion or belief, sex and sexual orientation. We will ensure that individuals with disabilities are provided reasonable adjustments to participate in the application and interview process.

Role Details

• Seniority level: Mid-Senior level
• Employment type: Full-time
• Job function: Engineering and Information Technology

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