Portrait of Samuel Aballa

Software Engineer · Certified Zoho Developer

Systems that just work.

6+ years building robust, scalable applications with PHP and MySQL, and 3+ years crafting custom solutions across Zoho One with Deluge and REST APIs.

View my work Get in touch

Open for opportunities · Nairobi, Kenya

About

Six years and counting.
Zero tolerance for flaky code.

I'm a versatile software developer who loves crafting solutions that automate workflows, enhance user experiences and bridge systems seamlessly.

For more than six years I've delivered robust, scalable applications in PHP and MySQL, backed by solid front-end skills in HTML, CSS and JavaScript. For the last three I've been designing and building custom solutions across the entire Zoho One suite: Creator, CRM, People and Books; with a strong focus on REST APIs and system integrations.

Today I lead engineering as Co-Founder & CTO of WorqLynx — a workforce platform spanning HR (WorqLynxHR) and revenue operations (WorqLynxCRM), while building Zoho-based software for PAIX Data Centres.

6+

Years with PHP & MySQL

3+

Years building on Zoho One with Deluge

4

Zoho CRM accounts integrated with one central Zoho Recruit

REST

APIs & system integrations

Skills

The toolkit.
Battle-tested in production.

Core

  • PHP 6+ yrs
  • MySQL 6+ yrs
  • JavaScript
  • HTML
  • CSS
  • jQuery

Zoho Platform

  • Deluge 3+ yrs
  • Zoho Creator
  • Zoho CRM
  • Zoho Books
  • Zoho People
  • Zoho Recruit

Also Fluent In

  • REST APIs
  • CI/CD & Cloud Deployments
  • UI/UX
  • Data Analytics
  • Node.js
  • TypeScript
  • React
  • MongoDB
  • Git

Experience

Where I've built things.

  1. Mar 2025 — Present

    Current

    Co-Founder & CTO

    WorqLynx Prysm LLP

    • Lead end-to-end engineering of both WorqLynx products: WorqLynxHR, an all-in-one HR platform covering the full employee lifecycle, and WorqLynxCRM, a revenue-operations CRM from first lead to signed deal.
    • Own the technical roadmap, system architecture and core implementation across both platforms, keeping them scalable and secure for small businesses and large enterprises alike.
    • Designed WorqLynxHR's workflow-driven processes for recruitment, onboarding, payroll, performance and offboarding.
    • Architected WorqLynxCRM's metadata-driven engine — custom objects and fields, no-code workflow automation, quotes with e-signature and drill-down dashboards.
    • Mentor engineers on architecture, code quality and secure development practices.

  2. Oct 2025 — Present

    Current

    Software Engineer

    PAIX Data Centres

    • Design and build custom software solutions that support PAIX Data Centres' operations and clients.
    • Develop and extend Zoho-based applications, custom features and modules tailored to business needs.
    • Integrate systems inside Zoho and external platforms to ensure smooth data flow and connectivity.
    • Automate business processes to reduce manual work for internal teams and customers.

  3. Jul 2024 — Oct 2025

    IT Specialist

    PAIX Data Centres

    • Designed and implemented custom solutions in Zoho Creator, CRM, Books and other Zoho platforms to streamline data centre operations.
    • Built robust workflows supporting core business processes and operational activities.
    • Integrated disparate systems for seamless data flow and unified data management across PAIX's infrastructure.
    • Applied advanced Deluge scripting to automate key processes and drive continuous improvement.

  4. Oct 2023 — Sep 2024

    Lead Zoho Developer

    Finlanza

    • Joined as a novice Zoho Developer and quickly rose through the ranks to Lead Zoho Developer.
    • Spearheaded project implementations and led a team of junior developers.
    • Delivered multiple Zoho CRM and Zoho One implementations, plus custom applications in Zoho Creator.
    • Built the company website.

Certifications & Education

  • Certified Zoho Developer

    Zoho Developer Associate

  • BSc, University of Nairobi

    Major in Microprocessor Technology & Instrumentation

Projects

Selected work.
Built for real businesses.

HRIS

WorqLynxHR

An all-in-one, multi-tenant HR platform covering the full hire-to-retire lifecycle — recruitment, attendance, leave, payroll, performance, learning and offboarding. Built for African markets, with Kenyan statutory payroll and multi-country territories and currencies designed in from day one.

  • Multi-tenant architecture with per-employee module permissions and a restorable, organisation-wide audit trail
  • Enterprise SSO (Google, Microsoft, Okta, Auth0, any OIDC provider) and TOTP multi-factor authentication, with secrets encrypted at rest using AES-256
  • Versioned public REST API with OAuth2 client credentials, per-organisation rate limiting, metered usage and an isolated sandbox environment
  • Built-in e-signature engine, live video interview rooms, AI-assisted candidate ranking and a background scheduler driving leave accrual, probation and reminders
  • PHP
  • MySQL
  • JavaScript
  • REST
  • OAuth2 / JWT
  • OIDC
  • WebRTC
View project
CRM

WorqLynxCRM

Revenue operations from first conversation to signed business — companies, people, deals and leads in one linked structure, with a product catalog, quotes with e-signature, no-code automation, outreach sequences and drill-down dashboards.

  • Metadata-driven engine: custom objects and fields become real MySQL tables and columns at runtime, all behind a single identifier-validation layer
  • One generic record and views engine powers table, kanban and calendar views, exports and the REST API — with permissions applied identically everywhere
  • No-code workflows (triggers, conditions, webhooks, round-robin assignment), sales sequences, territory routing and quorum-based approvals
  • Privacy by design: PII masking with reason-to-reveal logging, GDPR data-subject tools and a layered disposable-email blocking engine
  • PHP
  • MySQL
  • JavaScript
  • Alpine.js
  • Chart.js
  • REST
  • IMAP / CalDAV
View project
Web

worqlynx.io

The WorqLynx company website: products, pricing, bundle offer, integrations, company and contact pages. Hand-built with no framework and no build step, with sitemap, robots.txt and an llms.txt for search and AI-assistant discoverability.

  • HTML
  • CSS
  • JavaScript
  • PHP
  • SEO
View project
Zoho

CRM × Recruit Integration

For a pan-African recruitment group, centralised job delivery in one Zoho Recruit account while sales ownership and invoicing stayed in four country-specific Zoho CRM accounts: Nigeria, Ghana, Kenya and Uganda; kept in sync automatically in both directions.

  • Deal → Recruit: a signed or won deal finds or creates the client in Recruit, opens a linked job opening and reports its status back to CRM
  • Recruit → CRM: a territory router sends every job-opening update to the right country's CRM, advancing the deal blueprint from sourcing to offer and emailing the owner when it's time to invoice
  • 8 Zoho Flow workflows across 5 API connections, with territory rules, country-standardised data and per-country pipeline mappings
  • Zoho CRM
  • Zoho Recruit
  • Zoho Flow
  • Deluge
Creator

Procurement Management System

An end-to-end procurement platform built on Zoho Creator, covering the full lifecycle: purchase requests, vendor onboarding, multi-level approvals, purchase orders, delivery tracking and financial reconciliation; integrated with Zoho Books, CRM and People to cut processing time and enforce procurement policy.

  • Policy-driven purchase requests: justification for new suppliers and quote attachments, and an auto-triggered onboarding form that adds finance-approved vendors straight into Zoho Books
  • Multi-level approvals from Head of Department to the last approver, with approve, reject and comment actions delivered through Zoho Cliq and email
  • Zoho Books integration for real-time budget validation, purchase-order generation, advance-payment handling and payment recording that closes requests automatically
  • Line-item delivery confirmation that moves requests through Partially Delivered, Delivered and Completed, plus a live dashboard of approvals and spend by expenditure type and category
  • Zoho Creator
  • Deluge
  • Zoho Books
  • Zoho CRM
  • Zoho People
  • Zoho Cliq
Assets

Asset Management System

A Zoho Creator application that tracks every asset across its complete lifecycle; from the moment a purchase is delivered to the day it's disposed of.

  • Integrated with the Procurement Management System: confirming delivery of a purchase automatically onboards the items into the right asset or fixed-asset register
  • Full lifecycle tracking: installation, maintenance, reviews, lost or stolen reports, transfers and reassignments, through to disposal
  • Integrated with Zoho Books to post monthly depreciation until each asset is fully depreciated and disposed
  • Zoho Creator
  • Deluge
  • Zoho Books
Trading

QuantHub

An independent trading terminal for Deriv, built on its new API with no framework and no build step. It pairs live market analysis and one-click trading with a backtest lab and a risk governor, and it shows users the real house edge instead of hiding it.

  • Secure sign-in with OAuth 2.0 + PKCE and one-time-password WebSockets, so no passwords are ever handled or stored
  • Live analysis hub: digit heatmaps, streaks, volatility and a payout-vs-fair-odds table that measures the true house edge from live quotes
  • A trader for Rise/Fall, Even/Odd, Over/Under, Matches/Differs, Accumulators and Multipliers, plus 11 configurable bots with take-profit and stop-loss and import of Deriv's XML bots
  • Backtest lab that replays any bot on real ticks with Monte-Carlo risk-of-ruin, a risk governor that is mandatory on real accounts, and a local trade journal with CSV export
  • JavaScript
  • WebSockets
  • OAuth 2.0 / PKCE
  • Canvas
  • HTML
  • CSS
View project
Markets

Tazama

A calm, NSE-only portfolio tracker for Kenyan investors. Record what you bought, from which broker and at what price, and Tazama watches the Nairobi Securities Exchange, shows exactly how far you're up or down, and alerts you when a stock crosses a line you set. It never trades; it only keeps you informed.

  • A live NSE data engine: a throttled poller reads the exchange's public ticker feed for 79 securities plus index statistics, validated with Zod and guarded by a stale-data watchdog, with daily history backfilled from public datasets
  • Portfolio tracking across multiple brokers and lots, with average cost, realised and unrealised profit and loss in KES and %, partial sells, dividends, a watchlist, and descriptive analytics such as XIRR, volatility, drawdown, RSI and moving averages
  • An alert engine that fires once when a threshold is crossed and re-arms only after a hysteresis band, with per-stock overrides, quiet hours and a stale-price guard, delivered by email, web push and an in-app inbox
  • Passwordless sign-in with email verification and WebAuthn passkeys, HTTP-only sessions and rate limiting, backed by 70+ automated tests including a browser end-to-end run with a virtual passkey
  • Node.js
  • TypeScript
  • Fastify
  • MongoDB
  • React
  • WebAuthn
  • Web Push

Off the clock

Know the man underneath.
Beyond the code.

I'm an average nerd with a positive outlook on life. Code and system design scratch the problem-solving itch, but they're not the whole story. Here's what fills the rest of the hours.

200+

Music

Songs, and counting.

When I'm not writing code, I'm writing songs. I've written, composed or been part of more than 200 of them; all unreleased, for now. Turns out a good chorus and a good function want the same thing: nothing wasted, and a hook you can't shake.

#44

Formula 1

Team Lewis. Always.

I'm hooked on the engineering of speed — aerodynamics, tyre strategy, the thousandths of a second won in a braking zone. And I'm a staunch Lewis Hamilton supporter, whatever colour the car he's driving.

#9

American football

Wherever Joe goes.

I don't have an NFL team, I have a quarterback. Whichever team Joe Burrow lines up for is my team that Sunday. Calm under pressure and surgical when it counts: exactly who you want on the call at 2 a.m. when production is down.

#30

Basketball

Steph is the GOAT.

Not up for debate. Stephen Curry didn't just win; he rewired how the game is played, one impossible three at a time. I have a soft spot for anyone who changes the whole system.

Contact

Let's build something.

Have a project, a role, or a Zoho workflow that needs taming?

Email me Connect on LinkedIn