Web development
SaaS products, customer portals and internal tools built on Ruby on Rails and React: fast pages, clean data models, and billing, auth and admin that just work.
- SaaS & subscriptions
- APIs & integrations
- Admin & support tooling
Johannesburg · working with teams worldwide
Software that earns its keep.
Sparkus is a product-minded software consultancy. We build web and mobile apps, games and machine-learning systems end to end, from the first sketch to production. We also audit the code others have built.
- Web & mobile
- Rails, React, Kotlin, Compose
- Games
- Prototypes to shippable builds
- Machine learning
- Models, pipelines, AI features
- Code audits
- Security, architecture, tests
Services
Five things we do properly.
One accountable team from idea to production. No hand-offs between agencies, freelancers and "the infra guy".
Mobile development
Native Android apps in Kotlin and Jetpack Compose that feel at home on the device, talk to your API securely, and get through store review.
- Jetpack Compose UI
- Secure API clients
- Play Store launch & policy
Game development
Games and interactive experiences, from prototype and core loop to polished, shippable builds, with the tooling and backend services around them.
- Prototyping & gameplay
- Multiplayer & backends
- Porting & performance
Machine learning
Practical ML that earns its place in the product: data pipelines, model training and evaluation, and deploying models behind APIs your apps can actually call.
- Data pipelines & features
- Model training & evaluation
- LLM & AI integrations
Code audits
An independent, senior read of your codebase: security, architecture, test coverage and delivery risks, written up as a clear, prioritised plan you can act on.
- Security & dependency review
- Architecture & scalability
- Test coverage & quality gates
Our product
ClockPaid
Time tracking that turns into invoices. Freelancers, consultants and small agencies track billable hours against clients, review a per-entry report for the billing cycle, and send an invoice with that timesheet attached, in a couple of clicks.
- Live timers and manual entries, on the web and Android
- Invoices built from unbilled time, with the report attached
- Team plans with roles and per-client access
- Built, hosted and supported by Sparkus
clockpaid.com/invoices
Approach
Small team. Short loops. Working software every week.
- 01
Discover
We learn how your business makes money and agree on the smallest thing worth shipping.
- 02
Design
Flows, data model and a clickable plan before a line of production code is written.
- 03
Build
Test-first increments you can use, with behaviour specs that double as documentation.
- 04
Launch & run
Deploys from a single server to Kubernetes, monitoring and support. We stay on after go-live so it keeps working.
What we reach for
Boring, proven tools, chosen so your product is cheap to host and easy to hire for.
Ruby on RailsHotwire · Turbo · StimulusReactPostgreSQLTailwind CSS
KotlinJetpack ComposePythonPyTorchUnityGodotREST & JSON APIsDockerKubernetes · CKA certified
KamalHetznerPaddle & Stripe billingRSpec
PlaywrightCucumber / GherkinMaestro
About
Engineers who ship products, not just tickets.
Sparkus Software Consultancy is a Johannesburg-based software company working with clients across South Africa and abroad. We build for others, and we build our own products. That's exactly why we care about the unglamorous parts: billing, support, onboarding, hosting costs and the hundredth deploy.
We work in the open, keep scope honest, and leave you with software you own outright: readable code, real test suites, and documentation your next developer will thank you for.
Based in
Johannesburg, ZA
Works in
SAST · overlaps EU & US
Certified
Kubernetes Administrator (CKA)
You own
All code & IP
Have something worth building?
Tell us about your product, your users and your deadline. You'll get a straight answer on scope, approach and cost, usually within one business day.
hello@sparkussoftware.com