Dosubi Joshua

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Founder, CEO/CTO

Tracehut Innovations

Apr 2024 - Jan 2025 (10 months)

• Developed and managed a high-performance REST API using C# .NET Core and Swagger, reducing API response time by 40% and supporting 2,000+ concurrent users. Managed and mentored one C# engineer. • Led the development of the Tracehut XP mobile app (iOS & Android), setting up the Flutter foundation and overseeing two Flutter engineers. Successfully launched the app, increasing user sign-ups by 60% within the first 3 months. • Built the frontend and admin dashboard using NodeJS, TypeScript, and ReactJS, optimizing UI performance and reducing page load time by 35%, resulting in improved user engagement. Managed one frontend developer. • Implemented SignalR for real-time data updates, cutting notification delivery time from 2 seconds to und

C

Director of Engineering

Coresight Research

Aug 2021 - Feb 2023 (1 year 7 months)

• Led and managed a 14-member team (6 full-stack engineers, 2 data analysts, 2 product owners, 2 UI/UX engineers, 2 QA testers) to develop data-driven web applications using Azure, WordPress, NodeJS, ReactJS, and Python/Django. • Built Coresight's homepage using WordPress + Elementor, increasing website traffic by 50% within 3 months. • Developed a Python-based data scraper tool, collecting millions of targeted data points, enhancing business intelligence capabilities. • Created a logic script using Azure Logic Apps, automating 100% of scheduled cron jobs, reducing manual interventions. • Built a store opening/closing tracker web app, analyzing retail trends across 10,000+ stores, using Tableau for data visualization and NodeJS + React

Senior Software Developer

Flutterwave

Aug 2021 - Mar 2024 (2 years 8 months)

• Developed and optimized a high-performance REST API for an event platform using C# .NET Core and Swagger, reducing API response time by 40% and handling over 10,000 requests per minute. • Built and managed the backend for the event platform using ASP .NET Core, ensuring 99.9% uptime and improving scalability. • Designed and implemented a REST API for a USSD platform, reducing latency from 2 seconds to under 300ms, improving user experience. • Containerized multiple CakePHP applications using Docker, improving deployment speed by 50% and reducing server costs by 30%. • Developed a ticket barcode validation app in Android Studio, processing over 50,000+ ticket scans per month. • Led backend API integrations with financial services, en

C

Director of Engineering

Centricity AI

Apr 2020 - Jul 2021 (1 year 4 months)

• Developed a Chrome extension using NodeJS and ReactJS, increasing platform adoption by 60% within 6 months. • Automated deployments by setting up a Bitbucket pipeline, reducing deployment time by 50%, and enabling seamless file transfers to AWS S3. • Built the backend for the Chrome extension using Django (serverless) with PostgreSQL, improving API response time by 45%. • Designed AWS Lambda cron jobs, automating annotation-to-CSV conversion, saving 10+ hours per week in manual processing. • Optimized database performance using AWS DynamoDB, reducing query execution time by 30%. • Managed large-scale data banks using GCP & BigQuery, processing terabytes of data for analytics. • Created interactive data visualizations in Looker, ena

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Full-Stack Developer

Maxfront

Mar 2020 - Jul 2021 (1 year 5 months)

• Analyzed and visualized 'Cardio Fitness' data using R and R Markdown, generating actionable insights that improved fitness recommendations by 30%. • Applied probability, ANOVA, and hypothesis testing to solve a 'cold storage problem', reducing storage losses by 20% through data-driven decision-making. • Designed interactive dashboards using Tableau, enhancing data presentation for stakeholders. • Developed an online educational content management app using C# .NET Core, deployed on Azure, supporting 100+ active users monthly.

A

Full-Stack Developer

Afritickets

Apr 2018 - Jan 2020 (1 year 10 months)

• Built a REST API using NodeJS, tested with VueJS, supporting over 500,000 ticket transactions annually. • Set up Digital Ocean Droplet, optimizing server resource allocation and reducing downtime by 40%. • Developed a scalable backend using CakePHP API, with a NodeJS + ReactJS frontend, improving system response time by 35%. • Integrated 3 payment gateways (Paystack, Rave, Interswitch), ensuring 99.9% transaction success rate and increasing checkout speed by 50%. • Developed two Android apps in Android Studio: ◦ Ticket barcode validation app, scanning 10,000+ tickets per month. ◦ Event creation & ticket purchase app, increasing user engagement by 60%.

Y

Full-Stack Developer

Yandi

Apr 2017 - Apr 2018 (1 year 1 month)

• Developed an e-commerce platform and admin dashboard using PHP, handling over 5,000 monthly transactions. • Built a WordPress-based e-commerce site, increasing sales by 45% within the first 6 months. • Developed 'CLAIR Chatbot' using PHP, automating customer interactions and reducing support response time by 50%

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Full-Stack Developer

Ultrabrains (UBIIT)

Sep 2015 - Feb 2017 (1 year 6 months)

• Taught over 300+ professionals and NYSC students in ICT courses (Java, MATLAB, HTML, CSS, MySQL, Networking). • Instructed 200+ professionals in Management courses (Project Management, Customer Relationship Management, Health & Safety). • Developed a full-featured school portal using PHP and JavaScript, reducing manual student registration workload by 70%. • Designed the company website from scratch using PHP, increasing online visibility by 50%.

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Head Instructor

LAUTECH ICT

Feb 2012 - May 2015 (3 years 4 months)

• Trained 500+ students & professionals in ICT courses (Java, MATLAB, HTML, CSS, MySQL, Networking). • Designed structured training materials, improving course completion rates by 30%.

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Dosubi Joshua

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