Selasie Sepenu

Software Engineer

I love building software that feels intentional, scalable, and human-centered.

From backend systems that just work to interfaces that flow seamlessly, I care about every layer of what makes technology meaningful.

I’m a software engineer passionate about crafting reliable systems and shaping how technology connects people. Over the past few years, I’ve worked across startups and engineering teams — building tools, mentoring peers, and learning from some of the best.

I believe great engineering sits at the intersection of logic, creativity, and empathy. Whether it’s designing smooth web experiences, architecting APIs, or improving performance, I enjoy solving problems that make a measurable impact.

When I’m not building or debugging, I’m probably mentoring new developers, playing music, or talking to my favorite person😊.

Seest thou a man diligent in his business? he shall stand before kings; he shall not stand before mean men
- Proverbs 22:29

My Work Experience

Software Engineer

Dimax Digital

Jan '25 – Present

Developed the landing page for the product
Leading frontend engineering on the project

TypeScript

React

Next.js

Node.js

Laravel

PostgreSQL

Docker

AWS

Software Engineer

Polymorph Labs

Mar '25 – Present

Implemented UI and logic fixes for the University of Ghana’s Department of Computer Science website, integrating Strapi CMS at some sections for dynamic content management and improved site maintainability
Resolved critical bug fixes across the university admission management console, improving functionality and user experience while maintaining system stability.
Developed an optimized export feature for the university’s admissions system, preventing duplicate exports and implementing pagination and performance enhancements for bulk data downloads.
Reduced data export time by 50%, cutting average export duration from 15–20 minutes to 7–10 minutes, significantly improving system efficiency and user experience.
Built a proof-of-concept walkthrough component for ECG’s internal console, streamlining user onboarding and reducing instructional video length from 8–10 minutes to just 1–2 minutes.
Assisting in mentoring an intern in mastering HTML, CSS, and JavaScript, fostering team growth and knowledge sharing within the engineering department.

TypeScript

React

Next.js

Node.js

GraphQL

MongoDB

RabbitMQ

Docker

Vitest

Strapi

AWS

Software Engineer

Turntabl

Jun '25– Sept '25

Serves as the team lead and fullstack engineer ensuring that all requirement defined for the product WhisperBox were technically met
Built the entire POC demo backend in less than 12 hours and made key integrations on the frontend

TypeScript

Next.js

Node.js

Spring Boot

PostgreSQL

Docker

MongoDB

Software Engineer Fellow

Headstarter AI

Jun '24– Sept '24

Built 5+ AI apps and APIs using NextJS, Open AI, Pinecone, and Stripe API with 98% accuracy as seen by 1k users.
Developed projects from design to deployment leading 4+ engineering fellows using MVC design patterns
Coached by Amazon, Bloomberg, and Capital One engineers on Agile, CI/CD, Git, and microservice patterns

TypeScript

Next.js

RAG

Pinecone

Stripe

Open AI

Lead Product Engineer

Afrovivo

Apr '24 – Sept '24

Plan and strategize with the engineering and design team to help achieve set goals in time.
Reviewed initial backend infrastructure and planned redesign to suit product requirements while enhancing optimization and efficiency.
Perform intuitive code reviews and provide constructive feeback to team members to ensure best practices are followed.
Built first version of authentication and transaction labelling service
Built, deployed and documented an API that automates MailChimp audience subscription on our waitlist site.
Planned, strategized and analyze with other stakeholders and team to ensure the right system design and technologies were being used in building the backend infrastructure
Performed major product design changes that are instrumental in successfully delivering a product consumers love

TypeScript

React

Node.js

Next.js

Python

PostgreSQL

Docker

Frontend Engineer

Leadmonger

Apr '23 – Sept '24

Worked extensively and closely with a team of designers to develop visually appealing and highly responsive websites and web apps for clients.
Develop websites and web apps that meet the expectations of clients in both visuals aesthetics and functionality.
Had one-on-one interaction with clients while syncing with the team to develop exceptional products.
Conducted basic user experience research, considered feedback, and implemented it to enhance user experience on all platforms I built..

TypeScript

React

Frontend Engineer Trainee

Andela

Aug '23 – Sept '23

I was engaged in intense and extensive collaboration with both new and experienced devs to learn and work with the REACT JS library and Next JS framework. I interacted with a community of learners and technical mentors, completed assessments, and various tasks.

TypeScript

React

Next.js

Node.js

Test Driven Development

Featured Work

View All

Explainable AI

@explainable-backend

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API and CLI tool for generating interpretable model explanations (SHAP, LIME, Integrated Gradients) for tabular, text, and image data. Built with FastAPI, supports Docker deployment, outputs visual and narrative reports, and is easily extensible for custom models.

WhisperBox Engine

@whisper-box-demo-backend

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This backend provides a suggestion system for Turntabl, supporting anonymous suggestions, department management, and role-based access for super admins, department heads, and department admins. Built with TypeScript, Express, and MongoDB.

Thanos DNS

@dns-server

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Thanos is a high-performance, configurable DNS server that resolves domain names to IP addresses, supports caching for faster lookups, and allows custom domain routing and record management for local or enterprise networks.