Hiring.Camp

Senior Software Engineer

Capitalontap

·

May 19, 2026

Location
London · London, Greater London, England, United Kingdom
Workplace
Hybrid
Department
IT
Seniority
Senior
Source
Greenhouse

Description

We’re Capital on Tap 👋
💳 Capital on Tap started because small businesses were underserved. Big banks were slow, their products weren't fit for purpose, and small business owners often couldn't access what they needed. We set out to fix that.

Today we're a financial platform - not just a credit card company. We offer a best-in-class business credit card, SME-focused spend management platform, a savings product that hit £1 billion in funds within its first year, and a growing suite of tools and financial products that make running a small business easier. 

1,000+ employees, £20bn in annual card spend, 200,000+ customers, 17,000+ Trustpilot reviews averaging 4.7 stars, and we're profitable. We’ve done a pretty good job so far, but we’re just getting started! 

🏡🏢This is a hybrid role, our engineering teams work from our London (Moorgate) office Office 2 days per week.

What You’ll Be Doing
We’re looking for Senior Full stack Engineers to help us build the best credit card and payment products for small businesses. If you’re looking for an environment where you’re given the freedom to make empowered decisions, research new technologies, and learn/share knowledge with your peers. Then keep on reading!

  • You’ll build robust and scalable solutions using .Net technology
  • From the first line of code to production, monitoring, and continuous improvement - you’ll own the SDLC
  • You’ll craft slick, responsive user interfaces with modern JavaScript frameworks (React), making sure our products don’t just work, they feel great to use
  • Teamwork makes the dream work - you’ll partner with Product Managers, QA’s, and fellow Software Engineers
  • You’ll build bulletproof unit and integration tests to keep our software sharp and our users happy
  • Bugs happen. When they do, you’ll be ready to troubleshoot and tweak as needed
  • You’ll bridge the gap between tech speak and business goals, ensuring everyone’s on the same page and moving forward together

We’re Looking For 🔎
Required skills:

  • A minimum of 5+ years hands-on experience in C#, .Net Core, SQL Server, ideally JavaScript and React also!
  • Good testing practices, in both Unit and Integration testing
  • Good understanding of database technologies
  • Experience in using Agile development practices
  • A passion for learning new skills and technologies
  • A proactive, supportive, and collaborative team player

Our Tech Stack

  • Backend: C#, .Net, .Net Core
  • Frontend: React, JavaScript
  • Mobile: Flutter, Dart
  • Databases: SQL Server, MongoDB
  • Cloud: Azure & GCP

Interview Process 🤝

  • First stage: 30-minute intro, CV review, and values with a Talent Partner
  • Second stage: 45-minute “Tech Chat” with a Team Manager
  • Final stage: 90-minute Code Pairing + 30-minute Values Interview

Diversity & Inclusion 🌈
We welcome, consider and encourage applications from anyone who shares our commitment to inclusivity. Join us in creating a space where authenticity thrives, and everyone can do their best work.

Great Work Deserves Great Perks

We try not to take ourselves too seriously (all the time) so we make sure our office is decked out with a pool table, arcade machine, beer tap, and a couple of office dogs thrown in for good measure. Check out our benefits:
🏥 Private Healthcare including dental and opticians services through Vitality
✈️ Worldwide travel insurance through Vitality
🎁 Anniversary Rewards (£250, £500, £750, 4-week fully paid sabbatical)
👛 Salary Sacrifice Pension Scheme up to 7% match
🚘 Octopus EV Salary Sacrifice Scheme
🏖️ 28 days holiday (plus bank holidays)
📖 Annual Learning and Wellbeing Budget
👪 Enhanced Parental Leave
🚲 Cycle to Work Scheme
🚂 Season Ticket Loan
💬 6 free therapy sessions per year
🐶 Dog Friendly Offices
🍫 Free drinks and snacks in our offices

 

Other Info
👍Check out our ‘Top Tips’ for interviewing.
✔️Keep updated on new job opportunities by following us on Linkedin.
📧Email [email protected] if you have any questions.

Excited to work here? Apply!
If you’d like to progress your career within our fast growing, profitable fintech then click apply and we will aim to get back to you within 3 working days (during busy periods this could take up to 5 working days.)

Skills

JavaScriptDartReactAzureGCPSQLMongoDBSQL ServerFlutterAgile

Similar Jobs

30

Senior Software Engineer

Renaissancelearning Nam · Remote - US · Remote

Today

Sr. Software Engineer

Rincon Research Corporation · Centennial, CO +3

Today

Sr. Software Engineer

Dialpad · Buenos Aires, Argentina +1

Today

Senior Software Engineer

CSC · Buffalo Grove, IL, United States, US · Remote

Today

Senior Software Engineer

NielsenIQ · Chennai, TN, India · Hybrid

Today

Sr Software Engineer

ServiceNow · Hyderabad, India · Hybrid

Today

Senior Software Engineer

Unframe · Tel Aviv-Yafo, Tel Aviv District, Israel

Today

Sr Software Engineer

Sinch · Spain, ES

Today

Senior Software Engineer

Pearson · United States, US · Remote

Today

Senior Software Engineer

Akamai · Poland, PL · Remote

Today

Senior Software Engineer

Newbridge · Singapore

Today

Senior Software Engineer

NielsenIQ · Chennai, TN, India

Yesterday

Senior Software Engineer

Ladders · New York, NY · Hybrid

Yesterday

Senior Software Engineer

SkySpecs · Hyderabad, IN

Yesterday

Sr Software Engineer

Blueorigin · WA - Landmark (Ride East), United States of America

Yesterday

Senior, Software Engineer

Walmart · (USA) TX DALLAS 11571 HOME OFFICE, United States of America · Remote, Onsite

Yesterday

Senior Software Engineer

Trimedx · US IN Indianapolis - Central Office, United States of America

Yesterday

Senior Software Engineer

AutoDesk · APAC - India - Pune

Yesterday

Senior Software Engineer

Wf · 111443-IND-HYDERABAD-INTL HYD WF CENTRE BLK B8 Twr-4, India

Yesterday

Senior Software Engineer

Cisco · IRL-GALWAY, Ireland · Hybrid

Yesterday

Senior Software Engineer

Usbank · Chennai, India

Yesterday

Senior Software Engineer

Stryker is one of the · Haryana, Gurugram International Techpark, Block I Phase 1 Floors G, 3, 4, 5, India · Hybrid

Yesterday

Senior Software Developer

SOTI is · Galway, Ireland · Hybrid

Yesterday

Senior Software Engineer

Sglottery · HR India Bangalore

Yesterday

Sr Software Engineer

Sabre · India - Bangalore-Navigator Bldg · Hybrid

Yesterday

Senior Software Engineer

Mastercard · Pune, India

Yesterday

Senior Software Engineer

BorgWarner is · Shanghai CTC (Minhang) - China

Yesterday

Senior Software Engineer

Usbank · Chennai, India

Yesterday

Senior Software Engineer

Alarmcom · Tysons, Virginia

Yesterday

Senior Software Engineer

Uber Freight · Chicago, IL 60607, United States · Remote, Hybrid

Yesterday
Senior Software Engineer at Capitalontap | Hiring.Camp