A growing SaaS company may need help getting customers live, designing complex solutions or connecting systems. Those are related problems, but they do not always need the same hire.
The Microsoft Learn guide to the solutions architect role describes understanding client needs and planning technical solutions, which helps distinguish architecture from day-to-day implementation and integration delivery.
This article explains what an Implementation Consultant, a Solutions Architect and an Integration Engineer each do, where the roles overlap, and how to decide who to hire first.
The one-line difference
- Implementation Consultant: gets the customer live and using the product
- Solutions Architect: designs how the product fits the customer's wider technical environment
- Integration Engineer: builds and maintains the technical connections between your product and the customer's systems
That's the tidy version. The messy reality is that at a ten-person SaaS company one person does all three, and at a 500-person company each has a team and a manager.
Implementation Consultant
The Implementation Consultant owns the customer's journey from signed contract to a working, adopted product. They run the project plan, configure the product, manage data migration, train users and make sure the customer reaches its first real result.
Typical background: professional services, consulting, customer success, or a technical project management role.
What good looks like: calm under pressure, strong at managing stakeholders on the customer side, and able to say no to scope creep without damaging the relationship.
Warning sign: they run an excellent project but the customer never adopts the product. A go-live is not the same as value.
Solutions Architect
The Solutions Architect works at the design level. They map the customer's systems, security needs and data flows and decide how the product should sit within them. In many companies they work before the sale (shaping a technical proposal) and carry on into delivery for complex accounts.
Typical background: software engineering, enterprise architecture or senior pre-sales.
What good looks like: they make complex environments understandable, and their designs survive contact with the customer's IT team.
Warning sign: beautiful diagrams that nobody builds. An architect who never touches delivery loses credibility fast.
A Solutions Engineer usually focuses on the technical sales process; a Solutions Architect focuses on the design of the solution.
Integration Engineer
The Integration Engineer builds the plumbing. They write and test the API connections, webhooks, data pipelines and middleware that link your product to the customer's CRM, ERP, payments or data warehouse.
Typical background: software engineering, with a strong API and data focus.
What good looks like: reliable, documented integrations that don't break when the customer upgrades another system.
Warning sign: custom one-off code for every customer, which creates a maintenance burden that grows with each deal.
Side-by-side comparison
| Comparison | Implementation Consultant | Solutions Architect | Integration Engineer |
|---|---|---|---|
| Main question | How do we get this customer live? | What is the right design? | How do we connect these systems? |
| Stage | Post-sale | Pre-sale to delivery | Post-sale, sometimes pre-sale |
| Writes code | Rarely | Sometimes | Yes |
| Customer contact | Constant | Frequent early, then occasional | Technical contacts |
| Measured on | Time to value, adoption | Quality of design, win rate on complex deals | Integration reliability, delivery time |
Who to hire first
The answer depends on where your friction is.
| If your problem is… | Hire first |
|---|---|
| Customers sign but take too long to go live | Implementation Consultant |
| Deals stall on technical or security questions | Solutions Architect or Solutions Engineer |
| Every customer needs custom connections | Integration Engineer |
| You have all three problems and one pair of hands | A senior hybrid, then specialise |
How the team grows
A common path for a growing SaaS company looks like this.
- Stage one: one hybrid person handles pre-sales and implementation
- Stage two: split pre-sales (Solutions Engineers) from delivery (Implementation Consultants)
- Stage three: add an Integration Engineer once integration work is repeated across customers
- Stage four: add a Solutions Architect for large or regulated customers
- Stage five: a head of professional services or customer delivery to run the group
The mistake is jumping to stage four too early. A Solutions Architect with no implementation team to hand the design to becomes an expensive diagrammer.
Hiring mistakes that cost months
- Using the titles interchangeably in adverts. Candidates self-select wrongly and your shortlist is full of the wrong profile.
- Hiring consultants for a technical gap. If the job is writing integrations, hire an engineer.
- Ignoring the handover. Whoever sells, scopes and delivers needs a clean process between them.
- Underpaying delivery roles. Implementation talent knows its value, and the best people leave when they see sales colleagues paid more for work they inherit.
How we help
We recruit Implementation Consultants, Solutions Architects, Integration Engineers and the wider delivery family for SaaS and AI companies in the UK and US. See the Solutions & Implementation recruitment page or book a call and we'll help you decide which role comes first.
Related hiring guides
- How to Hire a Forward Deployed Engineer: A Playbook for SaaS and AI Companies
- Why Your Solutions Engineer Hire Is Taking Months (and How to Fix It)
- Why Your Recruiter Keeps Sending the Wrong CVs (and How to Fix It)
Explore our Solutions & Implementation recruitment service or contact Wundertalent to discuss your hiring needs.