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Senior Frontend Engineer

Job in Greater London, London, Greater London, EC1A, England, UK
Listing for: Zilch
Full Time, Part Time position
Listed on 2026-01-13
Job specializations:
  • Software Development
    Software Engineer, Full Stack Developer
Job Description & How to Apply Below
Location: Greater London

Senior Frontend Engineer

Join to apply for the Senior Frontend Engineer role at Zilch

Zilch is a payment tech company on a mission to create the most empowering way to pay for anything, anywhere. Combining the best of debit, credit and savings, we give our customers the option to earn instant cashback or spread the cost of pricier purchases, completely interest free and with no late fees.

We started in 2018 with a small team and a big dream—to make credit accessible to all. Since then, we’ve achieved double unicorn status and taken on more than 5 million customers. There are some exciting projects coming up and we’ve got big growth plans.

About the Role

We are on the lookout for an individual who is filled with energy, someone who radiates enthusiasm and a passion for software development. We are looking for an FE Software Engineer IV who puts their all into their work, crafting exceptional code. Our ideal candidate is not just interested in software but lives and breathes it, and consistently maintains the highest standards of quality.

This individual should be comfortable setting the standard for others, pushing forward technical innovation and bringing their vast experience to Zilch’s Mobile App to keep us performing at the highest level. We’re looking for someone who can demonstrate a goal‑oriented approach to their work without compromising on quality.

Day-to-day Responsibilities Will Include
  • Working in an agile environment with multiple team members on user stories that deliver significant impact for our customers.
  • Taking the lead in technically designing and refining improvements to our Mobile App, including performance improvements, memory optimisation, seamless animations and complex 3rd party integrations.
  • Building mobile components that are rock-solid, secure, well-tested, and highly performant.
  • Continually improving our code, our systems, our practices, and our knowledge utilising experience gained throughout your career.
  • Working with our APIs and back-end components to ensure we store and process information securely and effectively.
  • Improving our mobile developer experience internally and streamlining our app test and deployment processes.
  • Assist in ad-hoc development and technology related duties.
What We’re Looking For
  • 6+ years’ overall experience.
  • 4+ years’ experience in Typescript development.
  • 4+ years’ using React

    JS.
  • 4+ years’ developing iOS and Android react native apps.
  • Happy to work on‑site in our London Victoria office 3 days per week.
Bonus Skills
  • Exposure to other mobile development systems & languages.
  • Bridging React Native to native code.
  • Mobile testing frameworks including Appium and Maestro.
  • Contract testing frameworks including Pact Flow.
  • App deployment technology including Firebase, Code Push and Bitrise.
  • Exposure to Styled Components.
  • Experience with AWS, AWS Lambda.
  • Experience with Content Management Systems, especially Content Stack.
Compensation & Savings
  • Pension scheme.
  • Death in Service scheme.
  • Income Protection.
  • Permanent employees enjoy access to our Share Options Scheme.
  • 5% back on in‑app purchases.
  • £200 for WFH Setup.
Health & Wellbeing
  • Private Medical Insurance including GP consultations (video, telephone or face‑to‑face).
  • Prescribed medication.
  • In‑patient, day‑patient and out‑patient care.
  • Mental health support.
  • Optical, dental & audiological cover.
  • Physiotherapy.
  • Advanced cancer cover.
  • Menopause support.
  • Employee Assistance Programme including:
    • Unlimited mental health sessions.
    • 24/7 remote GP & physiotherapy.
    • 24/7 helpline for emotional & practical support.
  • Savings & discounts on everyday shopping.
  • 1:1 personalised well‑being consultations.
  • Gym membership discounts.
Family Friendly Policies
  • Enhanced maternity pay.
  • Enhanced paternity pay.
  • Enhanced adoption pay.
  • Enhanced shared parental leave.
Learning & Development
  • Professional Qualifications.
  • Professional Memberships.
  • Learning Suite for e‑courses.
  • Internal Training Programmes.
  • FCA & Regulatory training.
Workplace Perks
  • Hybrid Working.
  • Casual dress code.
  • Workplace socials.
  • Healthy snacks.
Seniority Level

Mid‑Senior level

Employment Type

Contract

Job Function

Engineering and Information Technology

Additional Information

Referrals increase your chances of interviewing at Zilch by 2x.

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Position Requirements
10+ Years work experience
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