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Remote role · full-sta

Full Stack Software Engineer

Capital on Tap

SalaryEUR 40,000–55,000 / year
Before you apply

Role details

The practical picture
Base compensation

EUR 40,000–55,000 / year

Work arrangement
Hybrid
Employment
Full-time

Work & location

Office locations
Matosinhos, Portugal, Matosinhos, PT

Experience & eligibility

Experience
A minimum of 3+ years hands-on experience in C#, .Net Core, SQL Server

Inside the role

Qualifications
C# .Net Core SQL Server JavaScript React Unit and Integration testing practices
Hiring specifics1 detail
Open positions
1
Role signal brief

The role, at a glance

Extracted from the source posting · 92% confidence

Full stack engineer position in a fintech platform building credit card and payment products for small businesses. The role requires a minimum of 3 years of experience in C#, .Net Core, and SQL Server, and is hybrid with 2 days per week at the Matosinhos office.

Compensation
EUR 40,000–55,000 / year

What you need

  • C#
  • .Net Core
  • SQL Server
  • JavaScript
  • React
  • Unit and Integration testing practices

What you will own

  • Build robust and scalable solutions using .Net technology
  • Own the SDLC from the first line of code to production, monitoring, and continuous improvement
  • Craft responsive user interfaces with modern JavaScript frameworks (React)
  • Partner with Product Managers, QA’s, and fellow Software Engineers
  • Build unit and integration tests
  • Troubleshoot and tweak software as needed
Core skills
C#.Net CoreSQL ServerReactJavaScriptAzureGCPAgile
Internal freshness window ends Oct 17, 2026
View source evidence
  • department “Department: IT”
  • salary “Salary: €40,000-55,000”
  • workplace_type “This is a hybrid role, our engineering teams work from our Matosinhos office Office 2 days per week.”
  • location “This is a hybrid role, our engineering teams work from our Matosinhos office Office 2 days per week.”
  • must_have “A minimum of 3+ years hands-on experience in C#, .Net Core, SQL Server, ideally JavaScript and React also!”
  • experience_months “A minimum of 3+ years hands-on experience in C#, .Net Core, SQL Server, ideally JavaScript and React also!”
  • total_job_openings “This is a multiple-headcount role”
  • attendance_requirement “our engineering teams work from our Matosinhos office Office 2 days per week.”
  • benefits “Private Healthcare through AdvanceCare; Anniversary Rewards (€280, €570, €860, 4-week fully paid sabbatical); Paid Car Parking; 36 days holiday; Annual Learning and Wellbeing Budget; 6 free therapy sessions per year”
  • job_locations “our engineering teams work from our Matosinhos office”
c#.net coresql serverreact
Role brief

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 Matosinhos office Office 2 days per week.

Salary: €40,000-55,000

This is a multiple-headcount role, so please don't be put off if you've seen it advertised for a while.

What You’ll Be Doing
We’re looking for 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 3+ 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

Check out our benefits:

🏥 Private Healthcare through AdvanceCare
🎁 Anniversary Rewards (€280, €570, €860, 4-week fully paid sabbatical)

🚘 Paid Car Parking

🏖️ 36 days holiday (inclusive of public holidays with public holidays carried over if they fall on a weekend)
📖 Annual Learning and Wellbeing Budget
💬 6 free therapy sessions per year
🍫 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 careers@capitalontap.com 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.)