Integration Developer – Boomi

Integration Developer – Boomi | Elite 3E | IntappSenior Level | Fully Remote | International Law Firm

We're working with a prominent London-based law firm undergoing a significant period of technology transformation. As they continue to modernise and connect their core legal and financial platforms, they're looking for a Senior Integration Developer to take ownership of their integration landscape and drive it forward.

This is a fully remote, senior-level role with real autonomy — you'll be working across a mature and complex tech stack, not just maintaining what's there but shaping what comes next.

The Role

You'll be the integration subject matter expert, responsible for designing, building, and maintaining integrations across the firm's key platforms — primarily Boomi, Elite 3E, and Intapp. You'll work closely with IT leadership, finance, and operations stakeholders to translate business requirements into robust integration solutions, and you'll bring the experience to challenge and improve existing architecture where needed.

What You'll Be Doing

• Designing and delivering end-to-end integration solutions using Boomi AtomSphere


• Building and maintaining integrations between Elite 3E, Intapp, and wider firm systems


• Developing and managing REST/SOAP APIs and web services, including authentication protocols such as OAuth 2.0 and SAML


• Working with Azure Integration Services — including Logic Apps, API Management, Service Bus, and Event Grid


• Working with SQL databases and handling complex data transformations (JSON, XML)


• Writing clean, maintainable code in Python or similar languages to support integration workflows


• Contributing to integration strategy and technical architecture decisions


• Providing technical guidance and acting as a point of escalation for integration issues


• Collaborating with vendors and third-party consultants where required

• 5+ years of hands-on Boomi development experience


• Strong working knowledge of Elite 3E and/or Intapp (both highly desirable)


• Solid understanding of REST and SOAP APIs, EDI, and data mapping


• Experience with Azure Integration Services and the broader Azure ecosystem


• Strong grasp of API authentication — OAuth 2.0, SAML, and related standards


• Coding proficiency in Python or equivalent (Groovy, JavaScript)


• Proficiency in SQL and experience working with relational databases


• Ability to work independently, manage your own priorities, and communicate clearly with non-technical stakeholders

• Experience in a law firm or professional services environment


• Exposure to iManage or other legal document management systems


• Experience with MuleSoft or other iPaaS platforms

• Fully remote working


• Senior-level compensation (salary details on application)


• A genuinely complex and interesting integration landscape


• Real influence over architecture and technology decisions

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