Senior MuleSoft Developer

Senior MuleSoft Developer

Full-Time 63000 - 77000 £ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Architect and deploy enterprise-grade integrations using MuleSoft's Anypoint Platform.
  • Company: Join Gen25, a leading digital transformation consultancy and Salesforce Summit Partner.
  • Benefits: Competitive salary, pension contributions, flexible hybrid working, and career development opportunities.
  • Other info: Enjoy a collaborative culture with regular team socials and modern workspace facilities.
  • Why this job: Lead innovative integration projects and shape the future of digital environments.
  • Qualifications: 5+ years in MuleSoft integration, strong coding skills, and excellent communication.

The predicted salary is between 63000 - 77000 £ per year.

As a Senior MuleSoft Developer, you will sit at the centre of our technical delivery team in London. You will architect, build, and deploy enterprise-grade integrations on the MuleSoft Anypoint Platform, connecting complex backend ecosystems (Salesforce, SAP, legacy databases, REST/SOAP web services) using MuleSoft’s API-Led Connectivity framework (System, Process, and Experience layers). You will work closely with Solution Architects, Salesforce Consultants, and client stakeholders to translate complex business needs into secure, performant, and scalable solutions.

Key Responsibilities

  • API-Led Integration & Build: Design, develop, and test System, Process, and Experience APIs using Anypoint Studio, RAML, and DataWeave 2.0.
  • Architecture & Governance: Establish integration patterns, reusable data models, security policies (OAuth 2.0, mTLS, JWT), and error-handling strategies across CloudHub and Runtime environments.
  • DevOps & Testing: Implement robust MUnit test suites (>80% coverage) and automated CI/CD pipelines (Git, Maven, Jenkins/GitHub Actions) for zero-downtime releases.
  • Technical Leadership: Conduct rigorous code reviews, enforce coding standards, and guide other developers within the practice.
  • Client & Stakeholder Collaboration: Lead discovery sessions, document source-to-target field mappings, and articulate technical decisions clearly to technical and business audiences.

Essential Experience & Skills

  • Proven Track Record: 5+ years of hands-on integration development experience with the MuleSoft Anypoint Platform.
  • Core Languages: Deep expertise in DataWeave 2.0, RAML/OAS, and core Java/Object-Oriented Programming principles.
  • Integrations: Strong background in REST, SOAP, JSON, XML, event-driven messaging (Kafka, JMS), and connector configs (Salesforce, Database, HTTP).
  • Delivery: Experience working in Agile/Scrum environments with version control tools (Git) and CI/CD tools.
  • Communication: Exceptional verbal and written communication skills in UK English.
  • Eligibility: Unrestricted Right to Work in the UK (UK Passport, Indefinite Leave to Remain, or settled status).
  • Certifications: Active MuleSoft Certified Developer (Level 1 or 2), MCIA (Integration Architect), or MCPA (Platform Architect) certifications.
  • Hands-on experience: with Salesforce platform integrations (Sales/Service Cloud, Data Cloud) or AWS.
  • Experience: with CloudHub 2.0 or Runtime Fabric (RTF).

What we offer

  • Competitive Salary & Package: Excellent base salary reflective of senior experience, pension contributions, and performance-related incentives.
  • Career Path & Certifications: Sponsorship to gain advanced MuleSoft and Salesforce certifications.
  • Hybrid Working Model: Flexible working arrangements combining working from home with collaborative team days at our Southwark office.
  • Agile Culture: A flat, collaborative culture where your voice shapes engineering practices and solution architectures.
  • Perks & Socials: Regular team socials, 25 days annual leave + bank holidays, and modern workspace facilities.

Please Note: Applicants must have existing, permanent, and unrestricted legal right to work in the United Kingdom prior to applying. Gen25 Ltd cannot provide visa sponsorship or visa transfers for this role.

Gen25 is an innovative digital transformation consultancy and official Salesforce Summit Partner. We build high-performing digital environments for leading brands, combining deep expertise across Salesforce, AWS, and MuleSoft. At Gen25, we champion clean code, API-led architecture, agile teamwork, and automated CI/CD pipelines. We are expanding our UK integration practice and are looking for an experienced Senior MuleSoft Developer to lead the technical delivery of multi-cloud enterprise integration solutions.

Senior MuleSoft Developer employer: Gen25

Gen25 is an exceptional employer, offering a dynamic and collaborative work culture in the heart of London. As a Senior MuleSoft Developer, you will benefit from a competitive salary, flexible hybrid working arrangements, and opportunities for professional growth through advanced certifications. Join us to be part of a forward-thinking team that values your input and fosters innovation in digital transformation.

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Contact Details:

Gen25 Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior MuleSoft Developer

Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Gen25 or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Gen25.

Tap into Online Developer Communities

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Explore Job Boards Specifically for Tech Roles

Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Gen25 that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!

We think you need these skills to ace Senior MuleSoft Developer

MuleSoft Anypoint Platform
API-Led Connectivity
Anypoint Studio
DataWeave 2.0
RAML/OAS
Java/Object-Oriented Programming
REST

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Gen25.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Gen25 and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at Gen25

Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Gen25 uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.