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Backend Engineer

Open 15d

Summary

Backend Engineer at Calyptus partners with ML teams to build scalable Python APIs and cloud systems for blockchain/AI clients, troubleshooting production issues and guiding customers post-deployment.

Co-Founder @ Calyptus | High Performance Talent at Scale | Blockchain & AI

What You’ll Do

  • Partner with the Machine Learning team to design and implement scalable solutions that meet customer-specific requirements
  • Work directly with clients to gather requirements, provide technical guidance, and serve as the post-go-live ML point of contact
  • Develop custom APIs and backend services to enable seamless integration with customer environments
  • Troubleshoot and resolve complex technical issues, acting as the technical liaison between customers and the engineering team
  • Deliver small, targeted features to unblock high-priority edge cases and resolve customer tickets
  • Partner closely with the ML team on inference/data pipeline issues, adding validation and guardrails where needed
  • Collaborate with Product, Engineering, Customer Success, and Sales to refine features, improve customer experience, and produce clean documentation for smooth handover
  • Contribute to continuous improvement of backend architecture and services, incorporating customer feedback and industry trends
  • Build and maintain self-service tooling to enable non-engineers to diagnose and resolve common issues

Requirements

  • Proven experience in Python-based backend development; exposure to frontend technologies (particularly React) is desirable
  • Skilled in troubleshooting complex production issues, ensuring rapid resolution and system reliability
  • Track record of delivering technical solutions and providing expert guidance to clients in professional services or consulting settings
  • Ability to design and build scalable, cloud-based systems and APIs that integrate with client systems
  • Experience with database technologies (preferably PostgreSQL) and backend frameworks such as FastAPI
  • Knowledge of modern AI tools such as Cursor
  • Hands‑on experience working with LLMs and prompt engineering
  • Strong communication skills, able to convey complex technical concepts to both technical and non-technical stakeholders
  • Problem‑solving mindset with a passion for customer satisfaction and delivering quality solutions
  • Experience with containerization and deployment practices (Docker, Kubernetes, AWS/Azure/GCP) is a plus
  • Demonstrated ability to balance technical excellence with business requirements and time constraints

Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

Information Technology and Engineering

Industries

Information Services

See also

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