Duke Nyamongo - CBS Software Billing Engineer

Q: Where is Duke based?

Duke is based in Nairobi, Kenya and prefers 100% remote projects.

Q: What languages does Duke speak?

Duke speaks the following languages: English (Native), Swahili (Native) .

Q: How many years of experience does Duke have?

Duke has at least 8 years of experience. During this time, Duke has worked in at least 6 different roles and for 7 different companies . The average length of individual experience is 1 year and 1 month . Note that Duke may not have shared all experience and actually has more experience.

Q: What is Duke's latest experience?

Duke's most recent position is CBS Software Billing Engineer at Safaricom PLC .

Q: What companies has Duke worked for in recent years?

In recent years, Duke has worked for Safaricom PLC , Springboard , Data Integrated Limited , and Uzaonline .

Q: Which industries is Duke most experienced in?

Duke is most experienced in industries like Information Technology , Education , and Telecommunication . Duke also has some experience in Tourism .

Q: Which business areas is Duke most experienced in?

Duke is most experienced in business areas like Information Technology , Product Development , and Quality Assurance . Duke also has some experience in Business Intelligence and Project Management .

Q: Which industries has Duke worked in recently?

Duke has recently worked in industries like Education , Telecommunication , and Information Technology .

Q: Which business areas has Duke worked in recently?

Duke has recently worked in business areas like Information Technology , Product Development , and Quality Assurance .

Recommended expert

Nairobi, Kenya

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Experience

Mar 2023 - Jun 2025

2 years 4 months

Nairobi, Kenya

CBS Software Billing Engineer

Safaricom PLC

Designed, configured, and deployed 6+ new products within 4 months, enhancing system performance and establishing early-stage data pipelines to support billing accuracy improvements of 20%.
Conducted System Integration Tests (SIT) and User Acceptance Testing (UAT), resolving 15+ critical customer issues while validating backend API integrations.
Collaborated with cross-functional teams to optimize product delivery and ensure accurate flow of operational data.
Leveraged Linux/Unix and database management skills to maintain data integrity and uphold security best practices.

Jun 2022 - Jun 2025

3 years 1 month

United States

Software Engineer Mentor

Springboard

Mentored 30+ students in software engineering, achieving a 67% increase in technical proficiency while emphasizing scalable API development and robust data pipeline concepts.
Provided hands-on guidance in Python (Flask), React, SQL, and NoSQL, aiding students in building maintainable and efficient backend systems.
Reviewed and evaluated student projects, offering actionable feedback on coding practices and system design to improve long-term architectural decisions.
Fostered a collaborative learning environment through online forums, webinars, and group discussions, aligning with agile methodologies.

May 2022 - Dec 2022

8 months

Nairobi, Kenya

Senior Backend Software Engineer

Data Integrated Limited

Developed a data analysis platform using Python, Django, and PostgreSQL, enabling actionable insights and establishing foundational data pipelines for business analytics.
Architected scalable data infrastructure on AWS (S3, EC2, Redshift), reducing data processing time by 30% and optimizing backend performance.
Automated workflows using Apache Airflow to streamline production operations and reduce operational load by 25%.
Deployed machine learning models with Docker and Kubernetes, ensuring real-time inference and secure, scalable application environments.

Jan 2021 - Apr 2022

1 year 4 months

Nairobi, Kenya

Software Engineer

Uzaonline

Engineered a directory listing system using React.js, Django, and PostgreSQL, significantly improving user experience and backend data retrieval processes.
Automated backend API deployments using AWS Lambda, GCP, and CircleCI, cutting deployment time by 40% while supporting agile release cycles.
Designed RESTful APIs with Django Rest Framework, enhancing application performance and facilitating secure data exchanges.
Conducted unit testing with Pytest, reducing buggy features by 90% and ensuring reliable production operations.

Jul 2019 - Dec 2020

1 year 6 months

Nairobi, Kenya

Software Engineer

Kodi Mobile Limited

Developed a financial data visualization dashboard using React.js, Django, and PostgreSQL, empowering stakeholders with clear business insights.
Optimized database performance, achieving 20% faster query response times and supporting reliable data pipeline operations.
Collaborated with cross-functional teams to deliver cloud-based web applications on AWS, ensuring scalability, security, and adherence to backend best practices.

Jun 2018 - Jun 2019

1 year 1 month

Nairobi, Kenya

Backend Software Engineer

Sky-Swift Limited

Contributed to a hotel booking engine using Django, FastAPI, and PostgreSQL, integrating payment and flight booking features while upholding data security standards.
Advanced from junior to mid-level developer by successfully leading a team project, improving code efficiency, mentoring junior developers, and reinforcing back-end API development principles.

Mar 2017 - Dec 2017

10 months

Nairobi, Kenya

Data Analyst

Lokyatech Limited

Conducted exploratory data analysis (EDA) and created data visualizations using Python, R, and Tableau to support data-driven decision-making.
Assisted in data mining and machine learning model development, improving predictive accuracy by 15% and contributing to evolving data pipeline workflows.

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Education, Telecommunication, and Tourism.

Information Technology

Education

Telecommunication

Tourism

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Quality Assurance, Business Intelligence, and Project Management.

Information Technology

Product Development

Quality Assurance

Business Intelligence

Project Management

Summary

Backend Software Engineer with 6+ years of experience, specializing in Python-driven scalable systems and data pipeline design. Proven ability to architect complex data infrastructures and deploy robust solutions in Kubernetes and cloud environments. Demonstrated success in mentoring teams and reducing operational load through process automation and strategic integrations.

Skills

Languages: Python, Javascript, Typescript, Sql
Frameworks: Django, Flask, Fastapi, Express.Js, React.Js, Node.Js
Databases: Postgresql, Mysql, Mongodb, Redis
Cloud/Devops: Aws (S3, Ec2, Lambda, Cloudwatch), Docker, Kubernetes, Ci/Cd (Circleci)
Tools: Git, Nginx, Apacheairflow, Rabbitmq, Pytest, Jest, Ansible, Vagrant, Linux, Jenkins, Terraform, Gitops
Data & Methodologies: Data Pipelines, Agile Environment

Languages

English

Native

Swahili

Native

Education

Jomo Kenyatta University of Agriculture and Technology (JKUAT)

BSc., Mathematics and Computer Science · Mathematics and Computer Science · Juja, Kenya

Certifications & licenses

ICS Certificate, Computing

St. Anne's College

Statistics

Experience

Total positions 7

Experience in Information Technology 5.5 y

Avg length 1 y 6 m

Longest experience 3 y

Global Experience

Countries worked in 2 (Kenya, United States)

Primary country Kenya

Expertise

Recent roles CBS Software Billing Engineer, Software Engineer Mentor, Senior Backend Software Engineer

Main industries Information Technology, Education, Telecommunication

Main business areas Information Technology, Product Development, Quality Assurance

Qualifications

Highest degree Bachelor

Certifications earned 1

Profile

Created

November 2025

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Frequently asked questions

Have questions? Find more information here.

Where is Duke based?

Duke is based in Nairobi, Kenya and prefers 100% remote projects.

What languages does Duke speak?

Duke speaks the following languages: English (Native), Swahili (Native).

How many years of experience does Duke have?

Duke has at least 8 years of experience. During this time, Duke has worked in at least 6 different roles and for 7 different companies. The average length of individual experience is 1 year and 1 month. Note that Duke may not have shared all experience and actually has more experience.

What roles would Duke be best suited for?

Based on recent experience, Duke would be well-suited for roles such as: CBS Software Billing Engineer, Software Engineer Mentor, Senior Backend Software Engineer.

What is Duke's latest experience?

Duke's most recent position is CBS Software Billing Engineer at Safaricom PLC.

What companies has Duke worked for in recent years?

In recent years, Duke has worked for Safaricom PLC, Springboard, Data Integrated Limited, and Uzaonline.

Which industries is Duke most experienced in?

Duke is most experienced in industries like Information Technology, Education, and Telecommunication. Duke also has some experience in Tourism.

Which business areas is Duke most experienced in?

Duke is most experienced in business areas like Information Technology, Product Development, and Quality Assurance. Duke also has some experience in Business Intelligence and Project Management.

Which industries has Duke worked in recently?

Duke has recently worked in industries like Education, Telecommunication, and Information Technology.

Which business areas has Duke worked in recently?

Duke has recently worked in business areas like Information Technology, Product Development, and Quality Assurance.

What is Duke's education?

Duke holds a Bachelor in Mathematics and Computer Science from Jomo Kenyatta University of Agriculture and Technology (JKUAT).

Does Duke have any certificates?

Duke has 1 certificate: ICS Certificate, Computing.

What is the availability of Duke?

Duke is immediately available full-time for suitable projects.

What is the rate of Duke?

Duke's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.