Joshwa Otieno

Joshwa Otieno

About

Detail

Python Delveloper || Data Engineer || Data Scientist
Nairobi County, Kenya
Contact Joshwa regarding: 
Flexible work
Starting at USD55.5/hour

Timeline

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Résumé

Jobs verified_user 0% verified
  • JamboPay
    Software Developer
    JamboPay
    Feb 2024 - Current (2 years 6 months)
    Design and develop scalable REST APIs and data services for financial-technology products using Python, Django, MySQL, PostgreSQL, TypeScript, and Angular. Own database design and normalization, including defining relationships, constraints, and indexes; manage migrations; and build transaction-safe CRUD and financial workflows. Oversee data pipelines and warehouses for analytics, system-performance refactoring, automated unit testing, and production troubleshooting. Collaborate across product, frontend, backend, and data teams to deliver secure, maintainable, user-facing financial workflows for ERP, school-management, and operational dashboards.
  • Upwork
    Software Engineer
    Upwork
    Feb 2023 - Current (3 years 6 months)
    - I'm using technologies and programming languages like Python and JavaScript alongside framworks like Django, Flask and React to build web apps, websites and System administration interfaces and backends. - I also work with ERPs like ERPNext and Oodo.
  • L
    Software Programmer
    Lambada
    Jun 2020 - Jan 2023 (2 years 8 months)
    API & Web Application Development: -Architected and developed robust Python-based APIs, serving as the backbone for seamless data exchange. -Crafted dynamic web applications using Django and Flask, prioritizing a user-centric approach. Data Pipeline Optimization: -Designed and maintained efficient data pipelines using Python's data manipulation libraries like NumPy, Pandas, and SciKit Learn. Transformed raw data into actionable insights, enhancing decision-making and business agility. Docker Integration for Scalability: -Implemented Docker for containerization, ensuring consistent deployment across diverse environments. Streamlined development processes, enhancing scalability and system resilience. ERP Integration (ERPNext & Odoo): - Suc
  • L
    Software Engineer
    LAMBADA ESTUDIO
    Apr 2020 - Jan 2023 (2 years 10 months)
    Developed and deployed RESTful APIs and backend services with Python and Django, designed cloud-based processing with AWS Lambda, and collaborated with cloud and frontend teams using TypeScript and Angular. Improved scalability, security, and maintainability through clean architecture, automated unit testing, performance optimization, and remediation of software vulnerabilities.
Education verified_user 0% verified
  • Rongo University
    Bachelor's degree in Applied Statistics, Applied Statistics
    Rongo University
    Aug 2016 - Apr 2020 (3 years 9 months)
Projects (professional or personal) verified_user 0% verified
  • A
    Asante Mobile Finance App
    May 2026 - Current (3 months)
    Built a production-grade Flutter mobile finance app for Android and iOS that parses M-Pesa and bank SMS, reconciles wallets and transactions, de-duplicates cross-channel records, imports thousands of messages, sends Firebase notifications, and provides analytics and background-sync workflows. Hardened it with 58 automated tests, real-world parser validation, and polished UX.
  • z
    Car wash management system
    zitrion
    Jan 2026 - Current (7 months)
    I worked on the system from inception: drafting the problem and solutions and creating the mvp to cater for the specific challenges car wash owners were having. At the end I built a functioning product that is being used by hundreds of carwash owners, serving thousands of customers per day. project is hosted at https://tiptooapp.com
  • R
    RevelationsHub AI Podcast Clipper
    Dec 2025 - Current (8 months)
    Built an AI media-processing SaaS that ingests long-form podcasts and generates short clips. Implemented a Next.js, React, and TypeScript frontend, FastAPI and Python services, Stripe billing, and Inngest background pipelines for upload, processing, and export. Designed asynchronous job orchestration, progress and status UX, API boundaries, and production troubleshooting paths.
  • G
    GiftFlow Full-Stack SaaS
    Nov 2025 - Current (9 months)
    Built and deployed a full-stack gift-planning SaaS with Next.js, TypeScript, Clerk authentication, Prisma, PostgreSQL, and Convex. Delivered collaborative gift selection and claiming, credit workflows, an admin and feedback system, transactional email, sharing flows, deployment documentation, production monitoring, and iterative bug fixes across user onboarding and notifications.
  • C
    ChurchSys Operations Platform
    Aug 2025 - Current (1 year)
    Built a multi-tenant church operations platform with Next.js, TypeScript, Clerk, and Convex for member records, giving and financial workflows, events, administrative dashboards, and role-based access. Designed the data model, operational UI, integrations, and production-ready workflows to replace fragmented manual processes.
  • A
    Advanced School Management System
    Sep 2023 - Current (2 years 11 months)
    Designed, implemented, tested, and deployed a Django/PostgreSQL school management system for administrators to manage student and staff records, academic results, and finances. Built database models, administrative UI, superuser workflows, automated tests, Git-based version history, deployment configuration, and project documentation.