Flagstone Group LTD

Associate Fullstack Engineer

United Kingdom

Hybrid

Full Time

#Engineering

#Financial Technology

#Software Development

#C#

#.NET Core

#JavaScript

#React

#Cloud Development

#RESTful API

#TDD

#SQL Server

#Domain Driven Design

Flagstone Group LTD is looking for a Associate Fullstack Engineer

Full Time Junior Hybrid United Kingdom Engineering Financial Technology Software Development C#.NET Core JavaScript React Cloud Development RESTful API TDD SQL Server Domain Driven Design English Hybrid work Flexible hours Learning budget

You'll join Flagstone, an online savings platform that helps individuals, businesses, and charities manage and grow their cash. We're a profitable, collaborative team that values kindness, respect, and continuous growth while reshaping financial technology.

What you'll be doing

Contribute to the design, development, and upkeep of reliable systems that support our business goals.
Work closely with engineers, product managers, and other teams to turn business needs into working technology solutions.
Write clean, maintainable code, take part in code reviews, and help deliver features from initial design through to deployment.

What you'll bring

We look for engineers who enjoy writing code, learning quickly, and solving problems. Commercial experience with C# and .NET Core is important, along with front-end skills in JavaScript, CSS, HTML, and React. Familiarity with cloud development, RESTful API design, SQL Server, and TDD will help you succeed. Knowledge of Domain Driven Design, SOLID principles, or event-driven architectures is useful but not required. Above all, you should be a supportive team player who communicates clearly with both technical and non-technical colleagues and is eager to grow.

What you'll get

We offer hybrid working with at least one day each week in our London office, flexible hours, and a £1,000 annual learning budget. Health coverage includes private medical insurance through AXA, a medical cash plan for dental and optical costs, life insurance worth four times your salary, and income protection. Retirement support comes through matched pension contributions up to 5 percent. Time-off benefits include 25 days of holiday plus bank holidays, well-being days, and volunteering days, along with enhanced maternity, paternity, and adoption pay. Additional perks cover a competitive bonus scheme, a flexible benefits budget, salary-sacrifice options for cars and tech, mental-wellness support through Spill, and a three-month “Around the World” remote-work arrangement.

Flagstone Group LTD

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Associate Fullstack Engineer at Flagstone Group LTD