Full Stack Developer

Leep Talent Limited; Greater London; On-site; GBP 55,000 - 75,000; Full time

Job summary

Leep Talent Limited is seeking a proficient Full Stack Developer to contribute to a global digital transformation. You will develop and maintain React front-ends and server-side APIs using .NET/C#, while building integrations with Salesforce and Celigo.

The role covers cloud, database, and email templates, with collaboration across agile teams to deliver high-quality user experiences. The ideal candidate has 3+ years in full stack roles, strong OOP knowledge, and hands-on experience with AWS,

Qualifications

• Minimum 3 years' experience in a Full Stack Development role.
• Strong understanding of software development principles and object-oriented programming.
• Commercial experience with React, .NET/C#, RESTful APIs, AWS (Lambda, API Gateway), SQL Server (T-SQL), HTML5/CSS/LESS/SASS, JavaScript/jQuery.
• Experience working with server-side MVC applications.
• Understanding of responsive design, accessibility, and web performance best practices.
• Experience developing HTML email templates.
• Strong troubleshooting and problem-solving skills.

Responsibilities

• Develop and maintain React applications and user-facing digital platforms.
• Build, support, and enhance APIs and backend services using .NET/C# and Node.js.
• Work with AWS Lambda and API Gateway to support serverless application development.
• Develop and maintain integrations between Salesforce and internal systems using Celigo.
• Write, optimise, and troubleshoot SQL queries, stored procedures, and database processes.
• Support Salesforce development using Apex and Aura Components.
• Deliver responsive, accessible, and high-performing front-end experiences.
• Implement designs from internal and external creative teams.
• Create and maintain HTML email templates for B2C and B2B communications.
• Integrate third-party services and social media platforms via APIs.
• Lead technical SEO implementation and optimisation initiatives.
• Participate in Agile ceremonies, sprint planning, and collaborative development activities.
• Improve usability, accessibility, and performance of internal web-based applications.

Skills

React

.NET/C#

RESTful APIs

AWS (Lambda, API Gateway)

SQL Server (T-SQL)

HTML5/CSS/LESS/SASS

JavaScript/jQuery

Server-side MVC

Accessibility & Web performance

HTML email templates

Troubleshooting

Tools

Salesforce

Celigo

Job description

Full Stack Developer

Join an Iconic Global Brand Undergoing Digital Transformation

We are a globally recognised multimedia organisation with a rich heritage and an exciting future. As we continue a significant programme of digital transformation, we're looking for a talented Full Stack Developer to help build and enhance the digital products, platforms, and integrations that power our global audience and internal operations.

This is an excellent opportunity for a developer who enjoys working across the full technology stack and thrives in a collaborative, agile environment. You'll be involved in a wide variety of projects spanning web applications, cloud technologies, APIs, Salesforce integrations, and business-critical systems.

The Role

As a Full Stack Developer, you will play a key role in developing, maintaining, and improving a range of digital platforms and services. You'll work closely with developers, designers, and business stakeholders to deliver innovative solutions and exceptional user experiences.

Key Responsibilities

• Develop and maintain React applications and user-facing digital platforms.Build, support, and enhance APIs and backend services using .NET/C# and Node.js.
• Work with AWS Lambda and API Gateway to support serverless application development.
• Develop and maintain integrations between Salesforce and internal systems using Celigo.
• Write, optimise, and troubleshoot SQL queries, stored procedures, and database processes.
• Support Salesforce development using Apex and Aura Components.
• Deliver responsive, accessible, and high-performing front-end experiences.
• Implement designs from internal and external creative teams.
• Create and maintain HTML email templates for both B2C and B2B communications.
• Integrate third-party services and social media platforms via APIs.
• Lead technical SEO implementation and optimisation initiatives.
• Participate in Agile ceremonies, sprint planning, and collaborative development activities.
• Improve the usability, accessibility, and performance of internal web-based applications.

About You

You are a creative problem solver with a passion for technology and continuous learning. You enjoy working across multiple technologies, taking ownership of solutions, and contributing to projects that make a real impact.

Essential Skills & Experience

• Minimum 3 years' experience in a Full Stack Development role.
• Strong understanding of software development principles and object-oriented programming.
• Commercial experience with:
  • React / .NET / C#
  • RESTful API development
  • AWS, including Lambda and API Gateway
  • SQL Server (T-SQL, Stored Procedures and Views)
  • HTML5, CSS, LESS and SASS
  • JavaScript and jQuery
• Experience working with server-side MVC applications.
• Understanding of responsive design, accessibility, and web performance best practices.
• Experience developing HTML email templates.
• Strong troubleshooting and problem-solving skills

Why Join Us?

• Work on a diverse range of exciting digital products and platforms.
• Be part of an ambitious digital transformation programme.
• Gain exposure to modern technologies and cloud-based solutions.
• Collaborate with a passionate and supportive team.
• Enjoy excellent opportunities for professional growth and development.