Mobile Money Receipts
Client: KwikPayMobile money agent network · Accra
KwikPay office, Osu, Accra · Busy, month-end
KwikPay runs 3,000 mobile money agents. Their receipt vendor keys every file, and month-end reconciliation is in a week. Agents are nervous and so is finance.
Who you'll work with
Ada MensahYour lead
Engineering Lead
Dry, warm underneath, short sentences. Notices how you did. Never gushes.
Ruth Amankwah
Finance Manager, KwikPay
Sharp, calm, counts in her head.
Eli Dzamesi
Engineer at the receipt vendor
Helpful, overshares about the architecture.
Tunde Bakare
Senior Developer
Friendly rival. Competitive banter, always generous in the end.
The client's system
Receipt vendor
Vigenère per agent region, repeating-key XOR on the float log, and a substitution alphabet on archived receipts.
6 tickets in the sequence · every developer gets unique keys and tests · the rules come out in the tickets
Opens in
…- Pay / ticket
- 12–30
- Band
- 0–999
- Scored tickets
- 6
- Your time
- 72h
0 devs on this contract
Performance bonus · top 10
+40 gems to 1st
- #1+40
- #2+28
- #3+20
- #4+10
- #5+10
- #6–10+10 each
Ship 2+ tickets for a +6 completion bonus.
The shortlist stays hidden until wrap-up. Only the first 6 tickets count.