Most large organizations (corporations, international NGOs, UN agencies, governments) now use Applicant Tracking Systems (ATS) to filter applications before a human reviewer ever sees them. Understanding how these systems work is no longer optional.
What ATS Systems Actually Do
An ATS scans your submitted documents and scores them against the job description. The core mechanism is keyword matching, comparing the words and phrases in your application against those in the job description.
Applications that score below a threshold are filtered out automatically. The hiring manager never sees them.
This means your CV could be excellent and still never reach a human reader, simply because you used different words than the job description used.
How to Optimize for ATS Without Gaming the System
Mirror the job description language
If the job description says "project management," use "project management," not "managing projects." If it says "stakeholder engagement," use that phrase, not "working with partners."
Read the job description carefully. Make a list of the skills, tools, and phrases it uses. Then check your CV and cover letter against that list.
Use standard section headers
ATS systems are often confused by creative formatting or non-standard headers. Use conventional section titles: Work Experience, Education, Skills, Certifications. Headers like "My Journey" or "What I Bring" may not be parsed correctly.
Avoid tables, graphics, and text boxes
Most ATS systems cannot read text inside tables, text boxes, or images. If your CV uses these elements, the content inside them may be completely invisible to the system.
Use a simple, clean, linear format. Columns are sometimes fine, but test carefully.
Submit as Word (.docx) when given the option
PDF formatting can sometimes confuse older ATS parsers. When an application portal gives you a choice, .docx is generally more reliably parsed. (Exception: if the format requires PDF and provides a clear upload field, PDF is fine.)
Spell out acronyms
The ATS may not know that "NYSC" means "National Youth Service Corps" or that "MOU" means "Memorandum of Understanding." Write both versions at least once: "National Youth Service Corps (NYSC)."
The Human Test
ATS optimization should never come at the cost of readability. After optimizing your CV for keywords, read it again as if you're the hiring manager. Does it still read naturally? Is it clear and compelling?
A CV that passes the ATS but reads as a keyword dump will be rejected by the human reviewer. You're optimizing for two audiences.
When ATS Doesn't Apply
Small organizations, startups, and many NGOs don't use ATS at all. Someone reads every application. In those contexts, standard CV best practices apply, and keyword stuffing will actually hurt you.
Fellowship and scholarship applications also rarely use ATS. They're screened by program officers. For those, focus entirely on the human reader, not keyword density.
A Quick Checklist Before Submitting
- [ ] Have I matched key phrases from the job description in my CV?
- [ ] Are my section headers standard and clear?
- [ ] Is my CV free of tables, text boxes, and graphics?
- [ ] Have I spelled out all acronyms at least once?
- [ ] Does my CV still read naturally and compellingly?
The ATS is not an adversary. It's a filter you can understand and prepare for. Once you know how it works, passing it is mostly a matter of careful language matching.