What Went Wrong? A Tech Director’s Hard‑Learned Lessons on Team Control

I was an unqualified technical director for nearly three months, leading a team of over 20 people drawn from a 40‑person R&D group to expand the company’s business.

Project and Team Background

Four projects were delivered in three months without a formal project manager, only three intern PMs.

One intern PM had nearly a year on a small continuous project (3 people), another had a month on a 4‑person project, and the third had six months on two medium‑size projects (7 people).

The developers were relatively young, the most experienced having only three years.

The team was split evenly between senior and junior members, with over half having joined the company less than a year ago.

All four projects were built on the same client‑provided base version (or framework).

The client’s base framework was over a decade old; the front‑end used an obscure technology with a steep learning curve.

The framework was chaotic, containing nearly 2,000 tables and a mix of business code that had to be used.

Development and debugging environments were difficult to configure; the project had to run on Linux with remote debugging, and each build took more than ten minutes.

Coordination with other departments in the large client’s R&D division consumed more than half of the effort, requiring frequent cross‑team hand‑offs.

Error One: Overestimating Team Capability

I assumed I knew the team well, but my assessment was superficial; past stable projects gave me a false sense of confidence.

The team struggled to adapt to a completely new environment, wasting time in the first two weeks without delivering any output.

For example, a newcomer (A) with three months of experience could not write basic multi‑table SQL, yet I placed him in a critical role; another developer (B) lacked risk awareness, causing repeated delays.

Reflection:

Comprehensive assessment and feedback are essential.

Our biggest personnel issues stemmed from a flawed evaluation system that placed people in unsuitable roles.

A static view of colleagues leads to misjudgment; observing daily performance across a full project provides a clearer picture.

Multiple perspectives are needed; relying on a single opinion caused major mis‑judgments.

People change over time; past experience should not lock someone into a fixed role.

Continuous follow‑up and guidance are required to help teammates improve.

Do not assign people to tasks solely based on past performance; objective evaluation of the whole history is necessary.

Error Two: Underestimating Project Difficulty

All four projects required integration with client‑developed middleware, ActiveX plugins, and various hardware devices, a domain we had never tackled.

Documentation for middleware and hardware was nonexistent, forcing us to reverse‑engineer code or chase other departments for answers.

The front‑end used a 2006 framework that was extremely outdated; we misjudged the learning curve, causing severe delays.

Cross‑department communication was far more difficult than expected; we spent hours locating hardware specifications and lacked guidance on code integration.

The client’s framework contained nearly 2,000 tables and millions of lines of legacy code, with multiple customized modules, making feature discovery extremely hard.

Reflection:

Experience is valuable but can be dangerous if taken as gospel.

More questioning could have revealed missing documentation earlier.

Actively seek additional information; incomplete data leads to misguided decisions.

Identify and confirm unknowns with the right contacts.

Identify core challenges early.

Use elimination to isolate critical functionalities and map business architecture.

Error Three: Tactical Mistake – Taking on Too Many Projects

Accepting more projects than the team could handle was a strategic error, though the decision involved trade‑offs.

Project acceptance should be a careful analysis of feasibility and resource availability before committing.

Reflection:

Resource scarcity is inevitable; never assume a project will have the ideal staff.

Managing a project is like playing cards—winning with a weak hand demonstrates true skill.

Error Four: Management Is Not Easy

When no one could lead a project, I stepped in, losing the ability to coordinate across multiple projects.

Management demands dedicated effort, especially communication and coordination in heavily interdependent projects.

Once immersed in a project's details, I could not maintain oversight of other projects.

Delegation is important, but regular checks are essential to ensure deliverables are complete and not re‑worked.

Key Lessons Learned

Establish a comprehensive assessment and feedback system to truly understand the team.

Do not rely solely on past experience; communication outweighs everything.

Reflect on each tactical mistake to ensure precise action next time.

Assign dedicated managers to avoid getting trapped in development details, which poses a fatal risk.