Senior Software Engineer – Harness Team

atCast AIRemoteBG flagBulgariaFull-timeFull-stack EngineerSenior€6,500 – €9,000/month

Posted 6 days ago

This is a fully remote position, open to applicants in Bulgaria.

πŸ“‹ Description

β€’ Design, plan, and evaluate pipelines utilizing various models for planning, execution, and assessment.

β€’ Oversee agent memory and context, ensuring state persistence across sessions, context compaction, and tool-call offloading.

β€’ Manage the harness interface, which encompasses TUI, MCP integrations, and telemetry.

β€’ Collaborate directly with users and team members to identify, comprehend, and resolve challenges.

β€’ Take full ownership of features from start to finish: design, implementation, testing, and deployment.

β€’ Work closely with product and engineering teams on intricate issues.


⛳️ Requirements

β€’ Strong preference for production experience with Go or TypeScript; candidates lacking either should exhibit robust systems programming skills in a similar language.

β€’ Proficient in debugging, optimization, and performance enhancement, including query profiling, index design, and database performance tuning beyond ORM usage.

β€’ Practical experience with AWS, GCP, or Azure and Kubernetes is highly advantageous.

β€’ Familiarity with observability tools such as Prometheus, Grafana, and OpenTelemetry.

β€’ Background in CI/CD and DevOps methodologies.

β€’ Adaptable, proactive, and comfortable navigating ambiguity.

β€’ Strong verbal and written English communication skills.

β€’ Proven ability to drive a complex project from inception to completion.

β€’ Experience with harnesses and developing AI workflows is a significant advantage.

β€’ May require a background check at the final phase of the hiring process.

β€’ Must not need visa sponsorship or a work permit from Cast AI.


🏝️ Benefits

β€’ Equity options.

β€’ Flexible, remote-first global work environment.

β€’ 10% of work hours allocated for personal projects or self-improvement.

β€’ Learning budget for both professional and personal development, including attendance at international conferences and courses.

β€’ Annual hackathon.

β€’ Team-building budget and company events.

β€’ Equipment budget.

β€’ Additional days off.

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