1. Role Title & Level
Frontend Engineer
Senior (6+ years of experience)
2.
Engagement Summary
·
Engagement
Type: Contract / Secondment
·
Squad
Context: Embedded within the Visa–client joint Tech
Squad; responsible for frontend feature delivery, app UI integration, and push
provisioning flows
·
Expected
Duration: [12 months]
· Primary Location:
[Nairobi, Kenya] — Expectation of days in the office will be confirmed by your
Hiring Manager
· Sprint Cadence:
Fortnightly agile sprints
· Reporting Line:
[Reports to Technical Program Manager, TPM]
3. Role Purpose
We are looking for a Senior Frontend Engineer
to play a critical role in building high-quality, elegant and responsive user
experience using the latest front-end technologies. Embedded within a cross-functional tech
squad, this role works in close collaboration with backend engineers, UX/UI
designers, and the Scrum Master to deliver high-quality features iteratively
within sprint cycles.
4. Key Responsibilities
·
Implement
frontend features and enhancements for push provisioning flows within the
M-Pesa app, including wallet provisioning UI, token management screens, and
user consent flows.
·
Integrate
CYBS (CyberSource) payment services into the M-Pesa application frontend,
implementing required UI components and user flows to specification.
·
Execute
frontend test scripts for acquiring/payment acceptance flows, including
UI-level functional tests and end-to-end test scenarios
·
Collaborate
with the UI/UX Designer to translate wireframes, prototypes, and design
specifications into pixel-accurate, responsive, and accessible frontend
implementations.
·
Implement
analytics and event-tracking instrumentation within the app frontend to support
digital lift measurement and data-driven campaign tracking.
·
Ensure
frontend code meets performance standards: app load time, rendering
performance, and network efficiency benchmarks defined in the project's
performance budget.
·
Build
and maintain frontend unit and integration tests; contribute to automated UI
testing frameworks where applicable.
·
Work
with Backend Engineers to agree and consume backend API contracts; surface and
resolve API integration issues at the frontend layer.
·
Support
knowledge transfer by producing component documentation, frontend integration
guides, and onboarding materials for internal team frontend engineering
counterparts.
5. Measurable Outcomes & Deliverables
First 30 Days
·
Development
environment configured; app codebase reviewed; understanding existing frontend
architecture documented.
·
First
sprint frontend deliverables completed and reviewed (per sprint plan); code
merged to agreed branch.
·
Analytics
instrumentation plan produced (in collaboration with Data Scientist): event
taxonomy defined, tracking library confirmed.
·
Frontend
technical approach document produced for push provisioning flow implementation.
·
Device/OS
test matrix agreed and documented.
Days 31–60
·
Push
provisioning UI components implemented and validated in sandbox/development
environment.
·
CYBS
integration frontend components: at least one payment flow UI built and tested
against sandbox backend.
·
Analytics
events implemented and validated for at least two key user journeys (e.g., card
provisioning, payment initiation).
·
Achieve
≥ 70% frontend unit test coverage on all new code delivered to date
· Document a component library inventory of
reusable frontend components built to date
Days 61–90
·
Push
provisioning frontend flows signed off by UI/UX Designer and Product Owner;
functional tests passing across agreed device matrix.
·
CYBS
integration frontend completed and UAT-ready; test script evidence documented.
·
Full
analytics instrumentation live in staging; digital lift tracking validated
end-to-end with Data Scientist.
·
Frontend
integration guide produced and handed over to client frontend engineering team.
·
At
least two knowledge transfer sessions delivered to client frontend developers.
Ongoing KPIs
·
Deliver
frontend features in line with sprint commitments and agreed designs.
·
Maintain
high UI quality through effective testing and early identification of defects.
·
Ensure
optimal performance and smooth user experience across key customer journeys.
·
Build
frontend components that are accessible, usable, and aligned with agreed
standards.
·
Collaborate
effectively with design, backend, and data counterparts to support endtoend feature delivery
6. Stakeholders & Ways of Working
Agile Ceremonies: All sprint ceremonies; participate in technical
refinement for frontend stories; daily stand-ups.
Reporting Cadence:
·
Sprint-level:
frontend delivery status at sprint review.
·
Ad-hoc:
technical blockers escalated to Backend Engineers or Scrum Master within 4
hours.
Cross-Functional Touchpoints:
·
UI/UX
Designer (design handoff, specification review, usability feedback).
·
Backend
Engineers (API contracts, data models, integration testing).
·
Data
Scientist (analytics event taxonomy, tracking validation).
·
API
Integration Engineer (frontend-side API integration support).
·
QA
team (test execution, device testing, UAT).
7.
Required Skills & Experience
·
Extensive
frontend/mobile engineering experience, including production-grade mobile app
development (Android, iOS, or React Native / Flutter cross-platform).
·
At
least 3 years in payments, fintech, or mobile money application development.
·
Experience
with frontend architecture design, component library strategy, and technical
leadership.
·
Proficiency
in native Android (Kotlin/Java) / native iOS (Swift) or equivalent
·
Experience
consuming RESTful APIs and handling complex async data flows in frontend/mobile
applications.
·
Familiarity
with mobile app testing frameworks and UI test automation.
·
Strong
understanding of mobile performance optimisation and network efficiency.
·
Experience
implementing third-party SDK or payment gateway integrations within mobile
apps.
·
Working
knowledge of analytics/event-tracking SDK integration (Firebase, Mixpanel, or
equivalent).
8. Preferred / Nice-to-Have Skills
·
Direct
experience with M-Pesa app development or comparable super-app / mobile wallet
platforms.
·
Familiarity
with push provisioning flows, digital wallet standards (e.g., Google Pay, Apple
Pay SDK integration).
·
Experience
with CYBS (CyberSource) mobile SDK or payment form integration.
·
Knowledge
of accessibility standards (WCAG) in mobile contexts.
·
Familiarity
with A/B testing frameworks and feature flagging tools.
·
Experience
with offline-first or low-connectivity mobile app design patterns (relevant for
emerging markets context).
9.
Tools & Technologies
·
Mobile
frameworks: Kotlin / Swift or equivalent
·
Design
collaboration: Figma or equivalent
·
Analytics:
Firebase Analytics, Mixpanel, or equivalent
·
Testing:
Detox, Espresso, XCTest, or equivalent mobile test frameworks
·
API
testing support: Postman or equivalent
·
Version
control: Git (GitHub / GitLab / Bitbucket)
·
CI/CD:
Fastlane / GitHub Actions / Bitrise / equivalent mobile CI
·
Performance
profiling: Android Profiler / Xcode Instruments / equivalent
·
Issue
tracking: Jira / Azure DevOps
·
Documentation:
Confluence / SharePoint
10.
Contract/Secondment Notes
·
This
is a contract/secondment engagement. The resource must comply with all
applicable information security, data protection, and confidentiality
obligations, including secure coding standards for payment-handling
applications.
·
Performance
will be assessed on a deliverables basis, with formal reviews at 30, 60, and 90
days.
·
Knowledge
transfer to client's in-house frontend engineering team is a standing
obligation throughout the engagement.
