Business and Finance

Backend / Reverse Engineer, Payments at Mono

Mono helps businesses in Africa access financial accounts for financial data and payments. Businesses of all sizes in Africa use our platform to retrieve account details, transactions and move money, reliably and securely, including Carbon, Renmoney, Inflow Finance, Tangerine Insurance, and many others.

In almost a year, we’ve introduced a steady cadence of innovations, such as statement pages, a no-code tool to retrieve bank statements, and much more. We’ve connected to 10% of all active bank accounts in Nigeria, and our investors include YCombinator, Entree Capital, and others.

We are recruiting to fill the position below:

Job Title: Backend / Reverse Engineer, Payments

Location: Nigeria
Job Type: Full time

Job Description

  • We’re looking for a senior backend engineer with experience in reverse engineering or custom web scraping to join the Bank Transfers team.
  • This team is responsible for Mono’s bank transfer APIs and our mission is to reimagine how consumers and fintechs move money in a convenient and secure way.
  • As a reverse engineer, you will be using advanced techniques to access previously inaccessible financial accounts. We use a set of approaches, among which the analysis of consumer Android applications to infer implicit network APIs and endpoints.
  • The right candidate will need to be very familiar with how Android Apps work behind the scenes, the Android runtime, and techniques such as decompilation, deobfuscation, and network traffic analysis. Cryptographic knowledge (PKI, Symmetric and Asymmetric encryption, certificates handling) will also be highly valuable.


  • Perform network traffic analysis and infer implicit APIs from institutions’ web and mobile apps.
  • Develop and evaluate bank-level encryption schemes (AES, RSA) and android APK reverse engineering.
  • Develop web scraping pipelines via Javascript.
  • Apply your knowledge set to fetch data from multiple sources, cleanse it and build APIs on top of it.
  • Understand and be able to reverse engineer authentication processes both in web and mobile apps.
  • Build solutions to stay on top of reliability and data quality
  • 4+ years of experience as a software engineer
  • Experience with data retrieval and reverse engineering technology.
  • Sound Knowledge in bypassing Bot Detection Techniques Experience using HTTP Proxy techniques to protects web scrapers against site ban, IP leak, browser crash, CAPTCHA, and proxy failure.
  • Ability to be nimble, proactive, and comfortable working with minimal specifications.
  • Experience designing and developing RESTful APIs
  • Can develop data extracting and processing using raw and programmatic techniques without scrapy or Puppeteer.
  • Are comfortable with ambiguity and poorly defined complex problems
  • Are innovative, push technical boundaries, and are excited to solve problems that have never been solved before
  • Communicate in a clear and direct manner
  • Can self manage, set an implementation schedule, and manage communication with team members and stakeholders
  • Can mentor other engineers and lead by example
  • Take an evidence-based and data-driven approach to making decisions


  • Stock options
  • Flexible working hours
  • Remote friendly
  • Access to mental health service
  • Health Insurance
  • Training Budget
  • Team building events
  • Bank holidays swap inside the same month
  • Fitness/ wellness stipends
  • Yearly offsite
  • Fresh fruit every week, all-you-can-drink tea and coffee
  • Free lunch
  • Friday happy hours

How to Apply
Interested and qualified candidates should:
Click here to apply online

Application Instructions – Read carefully!

  • Please make sure you proofread everything as we are a company that really cares about attention to detail!
  • Once you’re done applying, please complete this assessment test. Take your time to get ready; it takes 15 minutes to complete but it’s a little challenging and fast-paced.

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