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Senior Software Engineer (AI / LLMs)

Software Engineer • Senior • Remote • Full-time • European Union EU/EMEA

Apiphani is hiring a full-time, remote senior backend engineer to build the backend foundations of Luumen, its AI-driven automation platform. The work combines distributed systems, LLMs and agents for enterprise infrastructure automation.

Responsibilities

  • ▹Design and implement backend services for intelligent agent workflows and autonomous infrastructure actions
  • ▹Develop APIs and orchestration layers in Python and TypeScript, integrating LLMs, vector databases and observability pipelines
  • ▹Build scalable systems supporting LLM-based reasoning, retrieval and decision-making across cloud infrastructure
  • ▹Integrate with AWS Bedrock and other LLM platforms for multi-model capabilities
  • ▹Develop data access and semantic search layers using vector databases (e.g. pgvector, Pinecone, Qdrant)
  • ▹Build robust monitoring, testing and CI/CD systems for reliable, reproducible AI workflows
  • ▹Work with the product and DevOps teams on architecture diagrams, deployment planning and system health monitoring
  • ▹Write clean, maintainable, documented code; take part in code reviews and design discussions

Requirements

  • ▹6+ years of backend engineering experience in production environments
  • ▹Strong Python and TypeScript for distributed, event-driven systems
  • ▹Deep understanding of AWS services (Lambda, ECS, Bedrock, S3, CloudWatch, etc.)
  • ▹Experience designing APIs, microservices and event pipelines that interface with LLMs or AI models
  • ▹Familiarity with vector databases and concepts such as embeddings, similarity search and retrieval-augmented generation
  • ▹Experience with infrastructure-as-code tools such as Terraform or AWS CDK
  • ▹Understanding of SQL and schema migration workflows (PostgreSQL or similar)
  • ▹Hands-on experience with Docker, GitHub Actions and cloud-native CI/CD
  • ▹Ability to diagram systems, communicate architecture decisions clearly and work asynchronously in a distributed team
  • ▹Strong sense of ownership and ability to deliver in fast-moving, ambiguous environments

Nice to have

  • ▹Experience with LangChain, OpenAI or Anthropic APIs
  • ▹Familiarity with agentic frameworks or AI orchestration systems
  • ▹Background in observability or APM tooling (e.g. Datadog, Dynatrace)
  • ▹Prior experience building automation or infrastructure management tools
  • ▹Contributions to open-source LLM or MLOps projects
  • ▹Interest in shaping how AI is applied to real-world IT operations

Soft skills

OwnershipClear communicationAsynchronous teamworkAdaptability in fast-moving environments

What we offer

  • ▹Base salary USD 120,000-160,000
  • ▹Remote work
  • ▹Medical, dental and vision: 100% paid for employees, 50% for dependents (US employees)
  • ▹Life and disability insurance, 401K with 3% employer contribution
  • ▹Education and tuition reimbursement
  • ▹Paid time off up to 6 weeks, sick leave up to 2 weeks, parental leave up to 12 weeks
  • ▹International employees get statutory benefits under local law through the Deel employer of record

About the company

Apiphani is a small but rapidly growing technology-enabled managed services company supporting mission-critical enterprise workloads.

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