Calibrax.ai

Calibrax.ai helps organizations turn AI ideas into real, measurable business results. It designs AI strategies, develops models, and manages deployment and ongoing optimization. Core tech includes practical AI development and calibration to improve precision and efficiency. The company operates as a B2B AI services provider, partnering with teams across industries. With a culture of ownership and continuous learning, it aims to scale AI impact over time.

AIData ScienceEnterprise SolutionsMachine LearningSLM integrationscalibrax.ai

Calibrax.ai

AIData ScienceEnterprise SolutionsMachine LearningSLM integrationscalibrax.ai

HQRemote

Team Size4

Open Jobs1

Total Funding-

Latest FundraiseUnknown

Join the Team

Senior AI Backend Engineer

On-SiteFederal Territory of Kuala Lumpur, MY

On-Site • Federal Territory of Kuala Lumpur, MY

Teeming tracks opportunities at over 24,000 AI startups, then works with you to find (and land) the one you'll love.

AI Researcher

Full-timeUtrecht, NL

Full-time • Utrecht, NL

Machine Learning Engineer

Full-timeNew York, US

Full-time • New York, US

Data Scientist

ContractHaifa

Contract • Haifa

Machine Learning Engineer

ContractMunich, DE

Contract • Munich, DE

Software Engineer

InternshipRotterdam, NL

Internship • Rotterdam, NL

Backend Developer

Part-timeCambridge, GB

Part-time • Cambridge, GB

About Calibrax AI

Calibrax.ai is a team of high-caliber AI practitioners dedicated to building cutting-edge, practical AI solutions with real business impact. We help organizations craft their AI strategy, ensuring alignment with their goals, and deliver end-to-end solutions—from ideation and model development to deployment and long-term optimization. Our culture values ownership, curiosity, and innovation—where questioning assumptions, learning continuously, and thinking differently are encouraged. At Calibrax, we don’t just develop AI; we calibrate it for precision, efficiency, and long-term success. If you’re passionate about solving complex problems with AI and want to work in a team that values transparency, integrity, and excellence, you’re in the right place.

The Role

We’re looking for a Senior AI Backend Engineer who will help architect and build the backend systems that power Calibrax’s AI solutions. You’ll develop scalable services, APIs, and data-driven infrastructure that enable our ML models, agent workflows, and automation engines to operate reliably in production. This is a hands-on role where you’ll own complex systems end-to-end, contribute to technical decisions, and work closely with ML engineers and product teams to deliver real-world impact.

What You’ll Do

Design and build backend services and APIs that power AI workflows, agentic systems, and data pipelines.
Architect scalable, fault-tolerant systems for model execution, data processing, and workflow orchestration.
Implement high-performance storage and retrieval systems for embeddings, features, and model inputs/outputs.
Collaborate with ML engineers to integrate models into production environments with clean interfaces and strong observability.
Drive backend engineering best practices—clear documentation, robust testing, CI/CD, reliability, and performance.
Own end-to-end components: from system design to deployment, monitoring, and ongoing iteration.
Evaluate emerging infrastructure, cloud services, and backend technologies to strengthen our AI platform.

What We’re Looking For

6–10 years of backend engineering experience with a strong track record of building production systems.
Deep expertise in Python, Go, Node.js, or Rust with strong fundamentals in system design and distributed systems.
Experience building scalable APIs, event-driven systems, microservices, or workflow engines.
Strong experience with cloud platforms (AWS, GCP, or Azure) and modern infrastructure tools (Docker, Kubernetes, Terraform).

Why Join Us?

Build the core backend systems that power Calibrax’s AI solutions and automation engines.
Work on technically challenging problems at the intersection of AI, distributed systems, and real-world enterprise workflows.
Join a high-caliber engineering team that values transparency, integrity, and rigorous thinking.
Your ideas, designs, and contributions will directly shape our platform and engineering culture.
Flexible environment that supports growth, high autonomy, and continuous learning.