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How to Evaluate Outsourced Development When You Can't Read Code

Priit Kallas

You hired a development team to build your product. They send weekly updates. The invoices arrive on time. The demos look good. But when it comes to outsourced code quality, you have no idea whether the code is solid or held together with duct tape.

This isn’t a hypothetical concern. After 20 years of building software and running a development agency, I’ve seen both sides of this relationship. Good teams that deliver excellent code. And teams that deliver something that works today but becomes a nightmare to maintain tomorrow. From the outside, both look the same.

If you can’t read code yourself, here’s how to tell which one you’ve got.

Why this is hard

The information asymmetry between client and developer is massive. Your dev team knows everything about the code. You know nothing. And the only way to learn more is to ask the same people whose work you’re trying to evaluate.

That creates a trust problem. Not because your team is dishonest, but because even good developers have blind spots. They’ll tell you the architecture is fine because they built it and they understand it. They won’t mention that nobody else can, or that half the dependencies haven’t been updated in a year.

You need an independent perspective.

5 warning signs you can spot without technical knowledge

1. “It works, don’t touch it”

If the team resists changes to certain parts of the system, that’s a signal. Good code is designed to be changed. If modifying one area risks breaking something else, the architecture has problems.

What to ask: “If we needed to swap out the payment provider, how long would it take?” If the answer is “weeks” or the team looks uncomfortable, that area of the code is tightly coupled.

2. Every estimate is “it depends”

Some things genuinely depend on other factors. But if every feature estimate comes back as uncertain, the team may not fully understand their own codebase. Well-structured projects allow developers to estimate with reasonable confidence because changes are predictable.

What to ask: “What’s the range on this? Best case and worst case?” If the spread is 3x or more (e.g., “somewhere between 1 week and 3 weeks”), the codebase has unpredictable complexity.

3. Bugs keep coming back

If the same type of bug appears in different parts of the application, there’s a structural problem. Either the code is duplicated (fix it in one place, but there are three other copies), or there’s no automated testing catching regressions.

What to ask: “How many of our last 10 bugs were in areas we’ve fixed before?” Recurring bugs in the same modules indicate untested code paths.

4. New developers take forever to get productive

If it takes a new developer more than two weeks to make their first meaningful contribution, the codebase is probably poorly documented, overly complex, or both. This affects you directly because it means you’re paying for ramp-up time and you’re locked into whoever currently knows the system.

What to ask: “If we added a developer tomorrow, how long before they could work independently?” Over two weeks is a red flag.

5. No visibility into project health

If the only insight you get into your project is “it’s going well” in a weekly standup, you’re flying blind. Professional development teams track health metrics, even basic ones like test coverage, deployment frequency, and dependency status.

What to ask: “Can you show me a dashboard or report on our project’s health?” If none exists, ask why.

What to check at each project milestone

At kickoff

  • Is the team using version control (Git)? This is non-negotiable.
  • Will you have access to the repository? You should.
  • What testing approach will they use? “We’ll add tests later” means no tests.

At first delivery

  • Run a code health analysis. This is the cheapest time to catch problems.
  • Check dependency freshness. Are they building on up-to-date foundations?
  • Ask for a simple architecture diagram. If the team can’t produce one, they’re building without a plan.

At each milestone

  • Compare the current health to the previous check. Is the score going up, down, or sideways?
  • Ask about technical debt. Good teams acknowledge it and have a plan. Bad teams pretend it doesn’t exist.
  • Review the test coverage on critical business logic. Payment flows, user data handling, core features.

At handover

  • Get an independent health report before accepting the final delivery.
  • Verify that documentation exists for deployment, configuration, and architecture.
  • Check knowledge concentration. If only one developer worked on the project, make sure they’ve documented enough for someone else to take over.

How to get an independent assessment

You have three options:

Option 1: Hire a code audit consultant. A senior engineer reviews the codebase manually and writes a report. Thorough but expensive ($6,000-30,000 depending on project size) and slow (2-6 weeks). Best for high-stakes situations like M&A due diligence.

Option 2: Ask a trusted developer friend. If you know an experienced developer who isn’t on the project, ask them to take a look. Cheap but informal and hard to repeat consistently. Good for a gut check, not for ongoing monitoring.

Option 3: Run an automated code health analysis. Tools like StackGrit connect to your repository and produce a structured health report covering architecture, code quality, security, dependencies, test coverage, and team knowledge distribution. Results in under two hours, written in plain language for non-technical readers. You can share the report link with your team (or a new team) without them needing an account.

For most outsourced projects, Option 3 is the right starting point. It’s fast, affordable, and gives you a baseline you can track over time. If the automated report surfaces serious concerns, you can escalate to a consultant for the areas that need human judgment.

The agency perspective

Worth noting: independent code health reports aren’t just for clients checking up on their team. Smart agencies use them proactively.

An agency that includes a StackGrit health report in every project handover is saying “we have nothing to hide.” That builds trust faster than any sales deck. And if a client ever questions the quality of the work, the historical reports tell the story.

If your agency doesn’t offer this, ask them why. If they’re confident in their work, they should welcome the transparency.

The cost of finding out late

A security vulnerability found during development costs hours to fix. Found after launch, it costs weeks plus reputation damage. An architectural problem caught in month 2 is a refactor. Caught in month 12, it’s a rewrite.

An independent code health check costs less than a single hour of your development team’s time. Not checking means finding out the hard way.


Want to see where your outsourced project stands? Connect your repository and get a plain-language health report in under two hours. Your first analysis is free, no credit card.

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