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Tsungai Kaviya

@tsungaikaviya

Backend engineer at Teratech Solutions building T3rnel, an open-source Rust agent operating system with 3,000+ automated tests.

Zimbabwe

Message

What I'm looking for

I’m seeking fully remote backend roles.

At Teratech Solutions, I built T3rnel, an open-source agent operating system in Rust, as its sole architect and developer. It covers the kernel, runtime, memory, MCP, and an HTTP API, with 16 crates and more than 3,000 automated tests.

I also released T3rnel Browser to the Chrome Web Store and MCP servers to npm and other directories. I’m architecting Connekt, a modular Java 25 microservice SuperApp designed for 15 service categories across app, web, WhatsApp, SMS, and USSD.

At Equals Solutions, I delivered an arrears-management system with AI-based calling, user tracking, and OCR, using Java Spring and a stack that included Angular, PostgreSQL, Redis, and Weaviate on AWS. I also introduced a GitLab CI/CD pipeline with automated testing and security tools.

Earlier, I worked on payment, remittance, insurance, and logistics systems across several countries. At Payserv Zimbabwe, I led Paynet, a bulk-payment and settlement engine used by every bank in Zimbabwe for inter-bank transfers and by more than 5,000 companies.

Experience

Work history, roles, and key accomplishments

Current

Founder & Software Engineer

Current

Teratech Solutions (Pvt) Ltd

Oct 2025 - Present (1 year)

Founded and built T3rnel, an open-source agent operating system in Rust, and developed multiple MCP servers and a trading platform. Architecting Connekt, a Java 25 microservice SuperApp.

Rust Java MCP LLM Agents Flutter MQL Python AWS Docker Kubernetes

Current

Software Architect & Lead Developer (Consultant)

Current

Empower Telecoms and Technology

Oct 2016 - Present (10 years)

Designed and built a prepaid-voucher vending platform as sole developer, then moved it to Spring Boot microservices on Docker and Kubernetes.

Java Spring Boot Docker Kubernetes Mobile Wallets

Current

Technical Administrator (Freelance)

Current

Keybridge Petroleum

Feb 2016 - Present (10 years 8 months)

Run IT systems, hosting, the company website, and custom software.

Software Developer

Equals Solutions (Pvt) Ltd

Apr 2026 - Jun 2026 (2 months)

Delivered an arrears-management system with AI-based calling and OCR using Java Spring, Angular, React, and PostgreSQL. Introduced GitLab CI/CD with comprehensive testing on AWS.

Java Spring Framework Angular React PostgreSQL Redis Weaviate AWS GitLab CI CD Cypress Jest Playwright Junit JaCoCo Renovations Trivy SonarQube

Senior Software Developer

Different Technology

Apr 2023 - Oct 2025 (2 years 6 months)

Upgraded a digital life-insurance platform, modernizing infrastructure and codebases. Rolled out AI tools like Windsurf and Claude Code to the engineering team.

Java Kotlin PHP Laravel Angular MySQL Ansible Docker Icinga Windsurf Claude Code

Senior Software Developer

Waer Systems

Jun 2021 - Jul 2022 (1 year 1 month)

Modernised a legacy warehouse-management system, upgrading to Java 17 and improving security. Conducted technical interviews and code reviews.

Java Jenkins SonarQube Gradle PostgreSQL Tomcat Hibernate Hazelcast

Software Engineer

Kalekt Analytics

Mar 2021 - May 2021 (2 months)

Refactored a data-analytics platform on Java 11 and Spring Boot, introduced a code repository, and designed three applications including a Flutter mobile app.

Java Spring Boot Flutter

Software Architect (Consultant)

Integrated Payment Services Zimbabwe

Aug 2019 - Mar 2020 (7 months)

Built corporate server and transaction-switch/payment-gateway back ends in Java 11, Spring Boot, and WildFly on GCP.

Java Spring Boot WildFly GCP

Software Architect (Consultant)

Softrite Payrite

Apr 2019 - Jul 2019 (3 months)

Prototyped a modern payroll replacement in Java, Python, and C#; the client chose C#.

Java Python C#

Senior Software Engineer

Payserv Zimbabwe

Mar 2018 - Nov 2018 (8 months)

Led Paynet, the bulk-payment and settlement engine used by every bank in Zimbabwe, as sole developer on the core switch.

Java Spring Framework C#.NET Clarion

Software Architect (Consultant)

Beyond Telecom

Aug 2017 - Mar 2018 (7 months)

Designed and built the GoTrade, GoLocal, and GoPay financial platforms on GCP with Java 8, JSF, and WildFly.

Java JSF WildFly GCP

Software Engineer

Dariel Solutions

Aug 2015 - Dec 2015 (4 months)

Wrote Java 8 Spring REST APIs and JUnit tests on AWS.

Java Spring Framework Junit AWS

Senior (Lead) Software Developer

Hello Group

Jan 2014 - Jun 2015 (1 year 5 months)

Led and hired the team for Hello Paisa, a remittance platform sending money from South Africa to 30+ countries.

Java Remittances Team Leadership

Software Engineer

Entelect

Jan 2013 - Sep 2013 (8 months)

Built Java software for Momentum Health and Discovery Health.

Java

Lead Software Developer

cGrate International

Oct 2010 - Dec 2012 (2 years 2 months)

Built the core voucher and payment-switching systems with 20+ bank, bill-provider, and mobile-network integrations, and ran its servers across South Africa, Zimbabwe, and Zambia.

Java Payment Switching server management