Ruby Backend Engineer

TechBiz Global GmbH; Johannesburg; Remote; ZAR 500,000 - 900,000; Full time

Job summary

TechBiz Global GmbH is seeking skilled Ruby Backend Engineers to join a leading client's innovative team. You will be instrumental in building and optimizing high-performance backend systems for groundbreaking AI products. Join a world-class remote team and enjoy benefits like 4 weeks paid time off and access to advanced tools.

Benefits

4 weeks paid time off

ZAR 200 annual wellbeing budget

Company-provided laptop

Access to GPT-4 and AI tools

Qualifications

• 3+ years experience with Ruby on Rails in high-growth environments.
• Strong understanding of backend systems and architecture.
• Ability to write clean, testable code.

Responsibilities

• Architect and implement scalable backend features and APIs.
• Optimize database queries and ensure high performance.
• Collaborate with cross-functional teams like SRE and DevOps.

Skills

Ruby on Rails

Database optimization

Backend systems design

Performance tuning

Job description

At TechBiz Global, we are providing recruitment service to our TOP clients from our portfolio. We are currently seeking Ruby Backend Engineers to join one of our clients ' teams. If you're looking for an exciting opportunity to grow in an innovative environment, this could be the perfect fit for you.

Our Client is building category-defining AI companionship products — already reaching 30M+ users in just 18 months. Now, they’re scaling to 100M+ and beyond. We’re looking for exceptional Ruby on Rails Backend Engineers to join their world-class remote team and help deliver seamless, high-performance experiences to a global audience.

As a Ruby Backend Engineer, you will :

Architect and implement scalable backend features and APIs

Optimize database queries and backend performance

Collaborate with SRE, DevOps, and Data teams

Participate in technical planning, code reviews, and testing

Ensure system reliability and high performance at scale

3+ years with Ruby on Rails in high-growth environments

Strong understanding of backend systems, performance, and architecture

Experience with scalable, high-traffic systems

Clean, testable code and database optimization skills

Ownership mentality and ability to ship independently

Comfort working on NSFW or uncensored products

Job Highlights :

4 weeks paid time off

200 annual wellbeing budget

Company-provided laptop

Access to GPT-4, Mistral, Hugging Face Pro