Ruby on Rails Developer
Dalza|Posted 5 days ago
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Skills and experience
Location and salary
Role description
We're looking for a senior Ruby on Rails developer to take full, solo ownership of the Dalza backend:
Part-time (50% of your working week).
Dalza is an early-stage EdTech / HealthTech platform that helps families coordinate care for children with additional and special educational needs. The backend is the engine behind all of it, and we're looking for an experienced Ruby on Rails engineer to own it.
This is a solo backend role. You won't have a senior engineer above you to lean on, you'll be the person responsible for the backend, from planning through to production. So we need someone genuinely senior: comfortable making architectural decisions alone, writing clean and maintainable code, and being trusted with a platform that handles sensitive information about children.
You'll work closely with our frontend developer, product, and design to ship features that matter.
You should already be comfortable owning:
- PostgreSQL
- RESTful APIs and webhooks, documented with Swagger/OpenAPI
- Background and scheduled jobs with Redis and Sidekiq
- Production-grade third-party integrations (payments, auth, messaging)
- File storage on AWS S3
- Authentication with Devise / Devise Token Auth
Ideally familiar with, or happy to pick up:
- Stripe (web subscriptions) and mobile in-app subscriptions
- Mailjet (email), Firebase Cloud Messaging (push), Stream (chat)
- Sentry (error monitoring), RSpec / Rswag (testing & API docs)
- Docker (local dev), AWS + Terraform (infrastructure)
Joining a small, kind, and ambitious team means working on meaningful problems with real ownership and influence. You'll shape the technical foundation of a mission-critical platform, and you'll see the impact of your work on real families.
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About Dalza
What we do
Dalza is a web and mobile platform that helps families coordinate care for children with additional and special educational needs. We bring parents, educators, and specialists together around a shared profile for each child, so everyone supporting that child works from the same up-to-date picture, and nothing falls through the cracks.
Why work for us
We're an early-stage EdTech / HealthTeach company building something with genuine social impact: better-coordinated support for the children who need it most, and far less administrative load for the families and professionals around them. You'll join a small, founder-led team where your work ships and matters, with real ownership over the systems you build. We operate across South Africa and Europe.
Our culture
We care deeply about the families we serve, and that shows up in how we work: collaborative, direct, and thoughtful. Because we handle sensitive information about children, privacy and trust aren't afterthoughts, they're built into every decision. Our founder is a data-privacy and technology lawyer, so we hold ourselves to a high bar on data protection, GDPR included. We value people who bring their own perspective and take real pride in their craft.
Our engineering process
Our backend is built on Ruby on Rails with a PostgreSQL database, running on AWS with infrastructure managed in Terraform. Our web frontend is React and our mobile apps are built in React Native for iOS and Android. We lean on well-chosen third-party services. Being a small team means clear ownership, pragmatic code review, and engineers who reason about the whole system rather than a narrow slice of it.
Our hiring process
After an initial conversation about the role and your experience, you'll meet the team and work through a technical discussion or assessment tied to the actual work you'd be doing. We're looking for strong engineers who fit our stack and share our commitment to the families we serve, and we'll be transparent with you at every stage.
Tech Stack
application and data
dev ops
business tool
