Senior Developer Contractor Opportunity UK ·

Juniper Education Group; United Kingdom; Remote; GBP 80,000 - 100,000; Full time

Job summary

Juniper Education is seeking a Senior .NET Developer for an 8–12 week freelance contract to enhance their EdTech product, Tracker. This role involves writing efficient code, optimizing databases, and collaborating with a cross-functional team to deliver meaningful improvements in a remote-first environment.

Qualifications

• Proven experience as a Senior .NET Developer.
• Strong skills in SQL and database optimisation.
• A pragmatic, delivery-focused mindset.

Responsibilities

• Writing clean, efficient, well-tested code in .NET.
• Optimising databases and improving performance.
• Collaborating with designers, testers, and product managers.

Skills

C#

.NET Core

SQL

Database optimisation

Communication

Job description

Senior .NET Developer (Freelance Contract – 8–12 Weeks)

Make Tech for Good Happen. Fast.

Are you a passionate freelance .NET developer who thrives on creating impact quickly? Want to build something that genuinely improves lives—and see the results of your work in weeks, not months?

We’ve got the perfect challenge for you.

Juniper Education is on a mission to transform the way schools support their pupils and staff. Right now, we're looking for a Senior .NET Developer to help us accelerate improvements to one of our flagship EdTech products—Tracker, a powerful suite used across the UK education system for pupil assessment and progress tracking.

The Role
This is an 8–12 week contract where you’ll be hands-on with delivering real improvements to tools used by thousands of teachers. You’ll work closely with a talented, cross-functional team, and your work will directly enhance outcomes for educators and learners.

As a backend specialist, you’ll be:

Writing clean, efficient, well-tested code in .NET

Optimising databases and improving performance

Contributing ideas and technical insight from day one

Collaborating with designers, testers, and product managers

Helping us push out fast, meaningful releases

You’ll need to bring:

Proven experience as a Senior .NET Developer (C#, .NET Core)

Strong skills in SQL and database optimisation

A pragmatic, delivery-focused mindset

Great communication skills—you’ll be part of a remote-first team

Passion for building tech that does good in the world

Why Juniper?
We’re not just building software—we’re creating more Child-Time. Our products help schools reduce admin so teachers can do what they do best: teach.

You’ll join a team that values:

Positive, can-do energy

Strong engineering principles

Honest feedback and fast iteration

Autonomy and ownership (no micro-managing here!)

Make your mark on a meaningful product—in just a matter of weeks.

Contract Length: 8–12 weeks
Location: Remote (UK-based)
Type: Freelance / Contractor