Integration Architect
What the work looks like, the stacks behind the title, what each level means and the training that helps, then how interviews run and how to prepare for each step.
What an integration architect actually does
An architect who designs how the systems of a company exchange data, with APIs, events and integration platforms that stay reliable at scale.
An integration architect designs how the applications of a company talk to each other: the ERP, the CRM, the data platform and the custom applications. They choose between APIs, events and file exchanges, and they set the integration standards.
They work with integration platforms such as MuleSoft, Boomi or SAP BTP, and with event streaming tools such as Kafka. They plan API management, error handling and monitoring so that integrations stay reliable.
More and more teams also work with AI coding tools such as Claude Code, Cursor or GitHub Copilot, and expect engineers to use them with judgment.
- Designing the integration of a new application
- A review of an API or an event design
- Fixing a failed integration with a team
- Updating the integration standards
- A meeting with a vendor on the integration platform
The same title, very different stacks
Most integration searches are defined first by the integration style of the company, then by the ground every integration architect shares.
What each level means in practice
Titles vary from one company to the next. What changes from one level to the next is the scope you own and the decisions you take.
- Builds integrations designed by an architect
- Learns the platforms, the systems and the standards
- Writes and tests flows with review
- Designs integrations for a project on their own
- Takes choices on APIs, events and files
- Works directly with application teams
- Designs integrations across many systems
- Leads choices on platforms and governance
- Mentors other architects and developers
- Sets the integration strategy of the company
- Leads choices on vendors and standards
- Writes the guidance others build on
The paths into the role, and what really counts
Companies look first at integrations you designed and that run at scale. Platform certifications help, especially at partners and consulting firms.
- Engineering school or master's in computer scienceThe most common path in France, and often expected by large companies.
- University degree in computer scienceA common path in the US and in Europe.
- Integration development firstMost integration architects start as integration developers.
- Solution architecture firstSolution architects who specialise in integration also move into the role.
Our view: for this role, an integration landscape you designed and can walk through often says more than any certificate.
A conversation with a senior tech recruiter
Your first interview is with one of our senior tech recruiters, who knows the role, the platforms and the levels in this guide. The conversation covers your own work through real examples, and the architecture cases come later, with the company. Before the call, we send you the six themes we will cover so you can prepare your examples.
- What you owned yourselfThe integrations, APIs or platforms you were responsible for, and your own part in the team's work.
- Your environment and its constraintsNumber of systems, data volume, legacy systems, security or deadlines: what shaped your technical choices.
- The decisions you madeAPIs, events or files, which platform and which standards, the options you compared and the reasons for your choice.
- The impact of your workWhat changed thanks to your work, with numbers when you have them: integrations delivered, errors reduced, time saved or costs.
- How you work with other teamsYour work with application teams, vendors, security and architects, and how you settle a disagreement.
- What you want nextThe kind of systems, scale and scope you are looking for in your next role.
- Integrations at scale
- API governance
- Reliability
The same ground for every candidate. For a given role, every candidate answers the same final questions, built with the hiring manager around what the role really needs.
Ready for the next steps. After our call, we tell you how the company runs its interviews, who you will meet at each step and what each step is meant to assess.
What the company will assess, step by step
Each company runs its own process, and we walk you through its steps before you start. Integration architecture processes often combine the steps below, and the depth expected at each step grows with your level.
- An integration caseSeveral systems to connect, and the design you would propose, with APIs, events, errors and monitoring.
- A deep dive on your past workOne integration landscape you designed, discussed in depth: the context, your choices and the results.
- A technical discussionQuestions on API design, event-driven patterns, security and error handling.
- Meeting the manager and the teamHow you work, how you take decisions with others and what the team expects in your first months.
- Integration ArchitectYou design clean integrations, explain each choice in simple words and think about errors and monitoring.
- SeniorYou lead the design, weigh APIs, events and costs, and point out risks before you are asked.
- Lead and PrincipalYou run most of the interview as a peer, think about the whole integration landscape and connect it to the strategy of the company.
How to prepare as an integration architect
Practical advice for each step of an integration architecture process, from the way you introduce yourself to the questions you ask at the end of each interview.
Start with the integrations you worked on, their context and your part in them. Mention your main methods and tools in one sentence, then close with what you want next.
For each one, prepare the context, the constraints, your decision, the options you set aside, the result and what you would change today. Say "we" for the team and "I" for your own part.
Practise drawing an integration landscape you designed, with the systems, the flows and the error handling.
Prepare when you would use an API, an event or a file, with one real example of each.
Prepare how you monitored integrations and handled failures, with one incident you solved.
Rules on AI coding assistants differ from one company to the next, and sometimes from one step to the next. Ask before each step, and when they are allowed, explain what you ask the tool and how you check its output.
- Walk us through an integration landscape you designed.
- When do you choose events over APIs?
- How do you handle errors and retries in integrations?
- How do you govern hundreds of APIs?
- Which integration platforms does the company use?
- How many systems and integrations are there today?
- Who owns the APIs and their standards?
- How are integration incidents handled?
- Which projects are planned this year?
- How does the team use AI coding tools day to day?
Where integration architects come from, and where they go
The roles people most often hold before this one, and the ones they most often move to.
Many integration architects start as integration developers, and some become heads of architecture.