About.
Accessnavigator is a mentorship practice built around one idea — that manual software testing is a craft, not a checklist. We work with people who want to understand it properly.
Testing is specific work
Founded in 2023, Accessnavigator grew from a straightforward observation: most testing resources teach syntax and skip judgment. Knowing how to write a test case is not the same as knowing which cases matter.
We run online mentorship sessions that follow a client's actual work — not a generic curriculum. If you're testing a payment flow, that's what we examine. Real context produces useful feedback.
Progress here is measured in decisions, not certificates. The goal is a mentee who can look at an unfamiliar system and know where to start — and why.
Where mentees typically start
Confidence in test design, defect classification, and exploratory coverage — tracked across a typical 3-month engagement.
Mentorship format
1-on-1
Every session is private and structured around the mentee's current project or role.
Delivery
Online
Clients from any region, consistent session quality regardless of time zone.
Focus area
Manual QA
Test planning, exploratory testing, defect reporting, and validation strategy.
The people behind the sessions
Practitioners, not presenters
Dorian Kessler
Senior Mentor — Test Strategy
Dorian spent eleven years in QA across fintech and logistics software before moving into mentorship full-time. He's particularly focused on boundary analysis and how teams decide what not to test.
Currently accepting new mentees
Callum Osei
Mentor — Defect Lifecycle & Reporting
Callum's background is in enterprise CRM testing where defect communication was as important as defect discovery. He works with mentees on writing reports that developers actually read.
Available for new engagementsHow we work
Three things that don't change
Continuity over cohorts
We don't run batches or intakes. Each mentee has a continuous relationship with one mentor — same person, same context, session after session.
Specificity as a standard
Generic advice is easy to give and hard to use. Every recommendation we make is tied to something the mentee is actually working on — a test plan, a bug report, a conversation with a developer.
Honest progress tracking
We tell mentees when something isn't working. That includes our own approach. If a session format isn't producing useful outcomes, we change it — without waiting to be asked.
