Financial systems & integration
Digital banking, payment interoperability, and event-driven services.
- C#
- ASP.NET Core
- Go
- ISO 20022
- ISO 8583
- SMPP
- Kafka
- REST APIs
Financial systems · Data · AI
Hello, I’m Marius.
I build financial systems, payment integrations, and AI-powered workflows that teams can run in production. 13+ years connecting hands-on engineering with technical leadership across Africa, Europe, Japan, and the United States.
I lead the eight-person Digital Factory team at UMWALIMU SACCO, with responsibility for digital banking delivery, integrations, and production operations. Alongside this permanent role, I work as a Forward Deployed Engineer consultant at Hence Technologies, translating client requirements into production AI and data solutions.
My work spans payment interoperability, event-driven services, backend APIs, full-stack applications, and Palantir Foundry integrations. I stay close to implementation: tracing contracts, reviewing code, resolving production issues, and helping teams ship maintainable systems.
I hold a Master's in Information Systems from Kobe Institute of Computing, Japan. Teaching at WiredIn Academy and mentoring through African Leadership International / The Room have made developing other engineers a lasting part of my work.
Master of Science in Information Systems — Kobe Institute of Computing
Bachelor of Science in Computer Engineering — University of Rwanda
African Business Education (ABE) Initiative — Master's Degree and Internship Program
Japanese-Language Proficiency Test (JLPT) N4
Cisco Certified Network Associate (CCNA)
Permanent leadership at UMWALIMU SACCO, alongside a separate consulting engagement.
Permanent employment · Team of 8
UMWALIMU SACCO
Jun 2023 — Present
Kigali headquarters · Remote from Accra, Ghana
Lead an eight-person team responsible for the design, delivery, integration, and production operation of digital banking and business solutions.
Concurrent consultancy
Hence Technologies Ltd.
Jun 2025 — Present
London, UK — Remote (Accra, Ghana)
Implement production AI and data solutions for Hence Legal, working directly with stakeholders across the United States, Europe, and Africa.
Experience
Employment, concurrent consulting, and client deployments since 2013. Expand a role for its scope and technologies.
Kigali headquarters · Remote from Accra, Ghana
Lead an eight-person team responsible for the design, delivery, integration, and production operation of digital banking and business solutions.
London, UK — Remote (Accra, Ghana)
Implement production AI and data solutions for Hence Legal, working directly with stakeholders across the United States, Europe, and Africa.
Musanze, Rwanda — Remote (Accra, Ghana)
Led technical delivery for the Jambo360 platform, partnering closely with the CTO on architecture, code quality, and on-time milestone execution.
Kigali, Rwanda
Led delivery across international clients in Japan, the Netherlands, France, and Rwanda; owned requirements, design, implementation, and mentoring of junior developers.
Remote · United States
Contributed to software delivery for Audacy through the WiredIn–Cardinal Peak partnership.
Remote · United States
Designed microservices for live audio streaming and ad serving; resolved production issues across modern services and legacy systems. Worked with Kafka, Confluent, and AWS MSK, MQ, SQS, and EKS.
Remote · Netherlands
Delivered software engineering work across two assignments for a Netherlands-based client while employed by WiredIn.
Kigali, Rwanda
Trained students on programming fundamentals through advanced concepts as part of WiredIn Academy's programming curriculum.
Cybercity, Mauritius
Mentored Tech Career Catalyst (TCC) participants as part of The Room's Global Tech Expert team, contributing to the growth of Africa's upcoming tech talent.
Kigali, Rwanda
Supported product performance, data operations, and integrations across VSDC, POS, and ERP systems; contributed to international deployments and data warehouse operations as DBA Consultant and CTO Assistant.
Tokyo, Japan
Developed an IoT solution across web, mobile, and REST APIs, including supporting hardware artifacts within a Japanese business environment.
Kigali, Rwanda
Worked as a bridge engineer for Japanese clients, translating requirements and coordinating delivery, quality assurance, and communication across Rwanda and Japan.
Kigali, Rwanda
Led ten support specialists across client organizations, coordinating assignments, escalations, service quality, and client communication. Automated support workflows and built a bug-reporting tool.
Kigali, Rwanda
Contributed to Ishyiga inventory optimization, including stockout management and purchase forecasting, alongside business and clinic-management software.
Selected delivery across financial systems, AI and data platforms, and distributed services
Unruly Corporation · Deployed through Hence
Delivered a Palantir Foundry stack migration, connecting application code, runtime services, authentication, and ontology-backed data for a client deployment.
Credit Jambo Ltd.
Led technical development of a digital financial solutions platform, establishing code quality practices and coordinating delivery milestones with the CTO.
UMWALIMU SACCO
Directed digital banking modernization, including the revamp of internet and mobile banking, eKash and Educard integrations, online loan applications, and IFRS 9 expected credit loss (ECL) automation.
UMWALIMU SACCO · Project leadership
Directed delivery of the online loan application platform, enabling teachers to apply for loans remotely.
UMWALIMU SACCO · Integration leadership
Led Educard integration work at UMWALIMU SACCO as part of the digital banking portfolio.
IremboPay · Contribution through WiredIn
Contributed to the IremboPay payment gateway project while working at WiredIn.
UMWALIMU SACCO • MTN • MINEDUC • MINICOFIN
Led integrations for school-fees and Dusangire Lunch school-feeding collections, connecting banking and telecom payment workflows in Rwanda.
Audacy / AmperWave · WiredIn–Cardinal Peak partnership
Designed and implemented enterprise-scale microservices for live audio streaming and ad serving, debugging across legacy systems and adopting AWS-native services.
Earlier projects across IoT, mobile, and personal R&D
Rexvirt • WiredIn
Started during a Tokyo internship, evolved from ICHIGOJAM and Arduino hardware into a tablet application that manages queues in customer service settings.
Personal Project
A modular point-of-sale system built around microservices to support seamless transaction processing and demonstrate scalable architecture patterns.
Rexvirt • WiredIn
IoT-based retail engagement project using smart interfaces to optimize customer interactions and create a streamlined shopping experience.
Personal Project
Service ranking system based on sentiment analysis. Aggregates reviews from online platforms and uses the Wilson Score confidence interval for balanced rankings.
Personal Project
Interactive tool for practicing Rwandan driving theory exam questions, with real-time feedback and exam-condition timers, sourced via a web crawler over the Rwanda Traffic Guide.
Strategic, hands-on services that help teams move from idea to reliable production
Practical expertise shaped by banking, client delivery, and production operations.
Digital banking, payment interoperability, and event-driven services.
Client-facing applications, production AI workflows, and connected data platforms.
Databases, messaging, containerized services, and repeatable releases.
From requirements and architecture to team development and production operation.
Academic background, certifications, and published research
Kobe Institute of Computing, Graduate School of Information Technology
Kobe, Japan · Oct 2017 — Sep 2019
University of Rwanda, College of Sciences and Technology (formerly KIST)
Kigali, Rwanda · Jan 2010 — Sep 2013
African Business Education (ABE) Initiative — Master's Degree and Internship Program
JICA / Japan Government · 2017
Japanese-Language Proficiency Test (JLPT) N4
Japan Foundation
Cisco Certified Network Associate (CCNA)
Cisco
The Impact of Sentiment Analysis on Social Media to Assess Customer Satisfaction: The Case of Rwanda
2019 IEEE 4th International Conference on Big Data Analytics (ICBDA), Suzhou, China — pp. 356–359
DOI: 10.1109/ICBDA.2019.871321I’m always interested in hearing about new projects and opportunities. Whether you need a technical leader, consultant, or mentor, let’s connect.