Billing Layers
Client: Savanna TelecomMobile network operator · Tamale
Savanna Telecom NOC, Tamale · Technical, wry
Savanna Telecom's call records pass through mediation servers bought in 2009, 2014 and 2021. Each wraps records in its own encoding, and now business customers are getting invoices for calls to the moon.
Who you'll work with
Ada MensahYour lead
Engineering Lead
Dry, warm underneath, short sentences. Notices how you did. Never gushes.
Zakaria Iddrisu
Billing Systems Lead, Savanna Telecom
Thorough, apologetic about the legacy.
Hajia Fati
NOC Manager, Savanna Telecom
Brisk, sharp, misses nothing.
The client's system
Mediation layers
Stacked encodings per server generation, with headers that list the chain, only the steps, or nothing at all.
6 tickets in the sequence · every developer gets unique keys and tests · the rules come out in the tickets
Opens in
…- Pay / ticket
- 30–65
- Band
- 1,500–4,999
- Scored tickets
- 6
- Your time
- 120h
0 devs on this contract
Performance bonus · top 10
+180 gems to 1st
- #1+180
- #2+120
- #3+90
- #4+36
- #5+36
- #6–10+36 each
Ship 3+ tickets for a +12 completion bonus.
The shortlist stays hidden until wrap-up. Only the first 6 tickets count.