Refinery Shift Logs
Client: Coastal RefineryOil refining · Tema
Coastal Refinery control room, Tema · Careful, safety-first
Coastal Refinery's shift logs go to the safety auditors every quarter. The new ETL job transposes them: zigzag rows on nights, shuffled columns on days. The audit is next week.
Who you'll work with
Ada MensahYour lead
Engineering Lead
Dry, warm underneath, short sentences. Notices how you did. Never gushes.
Engineer Akua Boateng
Control Room Lead, Coastal Refinery
Exact, calm, safety above all.
Tunde Bakare
Senior Developer
Friendly rival. Competitive banter, always generous in the end.
The client's system
Night and day exports
Rail fence on night shifts, keyword columnar on day shifts, and a final pipeline that hides a transposition between encodings.
6 tickets in the sequence · every developer gets unique keys and tests · the rules come out in the tickets
Opens in
…- Pay / ticket
- 40–80
- Band
- 2,500+
- Scored tickets
- 6
- Your time
- 120h
0 devs on this contract
Performance bonus · top 10
+220 gems to 1st
- #1+220
- #2+150
- #3+110
- #4+44
- #5+44
- #6–10+44 each
Ship 3+ tickets for a +15 completion bonus.
The shortlist stays hidden until wrap-up. Only the first 6 tickets count.