Contract Senior Software Engineer (C#)

YLD is a software engineering and design consultancy focused on creating digital capabilities and fostering a culture of learning.

YLD.io

Employee count: 51-200

PT and GB only

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We're a remote-first consultancy specialising in software engineering, product design, and data. As a Senior Software Engineer at YLD, you'll be part of a client team building innovative products. We're looking for someone curious, passionate, driven, and enthusiastic.

Requirements

Experience in implementing high-quality cloud software solutions, i.e. Azure, AWS, GCP
An awareness of a variety of cloud architectures
A good understanding of consistency, reliability, scalability of systems without downtime
An understanding of design patterns and API design
Experience in system design, design patterns, API design and implementation of large scale distributed systems in the cloud, from IaaS containers to PaaS
Experience in system reliability and stability patterns
Hands-on experience with both SQL and NoSQL databases
The know-how to write readable, idiomatic, and maintainable C#
Experience implementing sophisticated API products
Experience with agile methodologies

Benefits

Flexible working and work–life balance as standard for all employees

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About the job

Apply before

Jan 13, 2026

Posted on

Nov 14, 2025

Job type

Contractor

Experience level

Senior

Location requirements

Portugal

United Kingdom

Hiring timezones

Portugal +/- 0 hours, and 1 other timezone

About YLD.io

Learn more about YLD.io and their company culture.

View company profile

Creating digital capabilities for you, that last beyond us. We are a software engineering and design consultancy that focuses on building capabilities in digital technologies. Our services cover various aspects, including software engineering, digital product design, and data science.

Our work encompasses multiple industry sectors where we help in developing end-to-end experiences with service integrations, scaling electric vehicle (EV) charging infrastructure for net-zero emissions, and building automatic energy trading capabilities. We are dedicated to accelerating scientific progress through innovation while enhancing growth with technologies powered by Python. Furthermore, we focus on building a multi-brand design system to ensure scalable efficiency and consistency across all projects. We are committed to fostering a progressive culture of learning within our teams, allowing our engineers to make substantial contributions to the open-source community.

Tech stack

Learn about the tools and technologies that YLD.io uses to build, market, and sell its products.

View tech stack

Node.js

JavaScript

Python

SQL

Kubernetes

Docker

YLD.io employees can create an account to update this tech stack.

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Please let YLD.io know you found this job on Himalayas. This helps us grow!

Apply now