Senior Back End Engineer with AI/LLM experince

Svitla Systems Inc. is looking for a Senior Back End Engineer with AI/LLM for a full-time position (40 hours per week) in Europe. Our client generates opportunities for innovation and enhances time and cost efficiencies for MVNOs, mobile operators, and businesses providing connectivity within the telecom ecosystem.

You will not only deliver production-grade backend and full-stack systems, but also help lead the organization's adoption of progressive AI tooling and engineering practices. It is a hands-on engineering role with an AI-forward mandate: we want someone who pushes the team beyond passive AI use to build, integrate, and operationalize AI capabilities across our codebase, workflows, and products.

Requirements

1. 5+ years of experience in software engineering in backend or full-stack roles.

2. Strong knowledge of at least one modern backend language (Python, Go, Node.js/TypeScript, Java, or similar).

3. Experience designing and building production REST/GraphQL APIs and distributed systems.

4. Extensive knowledge of databases (PostgreSQL, MySQL, or similar) and familiarity with caching, queues, and event-driven architectures.

5. Knowledge of cloud environment (AWS, GCP, or Azure) and modern DevOps practices (CI/CD, containerization, infrastructure as code).

6. Have experience not just using AI (as in using Claude, Cursor, and Codex), but also building an MCP server, understanding of the RAG and LLM, and LPM that can help automate the testing, etc.

7. Strong written and verbal communication; able to mentor and influence peers.

8. Hands-on experience with AI/LLM engineering, including at least several of the following:

• Building or integrating with MCP servers;

• Implementing RAG pipelines (embeddings, vector databases, retrieval logic);

• Working with LLM APIs (OpenAI, Anthropic, Google) in production;

• Building AI agents or agentic workflows (LangChain, LangGraph, AutoGen, or similar);

• Prompt engineering and LLM evaluation;

• Fine-tuning or model customization;

• Active, sophisticated use of AI coding assistants (Claude Code, Cursor, Codex, GitHub Copilot) - able to articulate workflows, limits, and best practices;

• Experience automating engineering processes (testing, code review, deployment) with AI.

Nice to have

• Open-source contributions to AI/LLM tooling or the MCP ecosystem.

• Familiarity with vector databases (Pinecone, Weaviate, pgvector, Chroma).

• Background in telecommunications, networking, or SaaS infrastructure

• Familiarity with model evaluation frameworks and AI observability tools.

• Bachelor's or Master's in Computer Science or a related field.

Responsibilities

• Design, build, and maintain scalable backend services and APIs supporting the platform.

• Contribute to full-stack feature development, collaborating with frontend, infrastructure, and product teams.

• Write clean, well-tested, production-ready code with strong attention to performance, reliability, and maintainability.

• Participate in architecture decisions, code reviews, and technical planning.

• Lead by example in advanced AI tool adoption — go beyond using Claude, Cursor, and Codex to shape how the team uses them actively.

• Design and build MCP servers to expose internal data sources, APIs, and tools to LLMs and AI agents.

• Architect and implement RAG systems for internal and product-facing use cases.

• Apply working knowledge of LLMs and LPMs to evaluate, fine-tune, and integrate models into engineering workflows.

• Build AI-driven automation for testing, code review, documentation, and operational workflows.

• Mentor engineers on effective AI tool usage, prompt engineering, and AI-augmented development practices.

• Evaluate emerging AI tools, frameworks, and platforms; recommend adoption strategies.

We offer

• US and EU projects based on advanced technologies.

• Competitive compensation based on skills and experience.

• Regular performance appraisals to support your growth.

• Flexibility in workspace, either remote or our welcoming office.

• Bonuses for article writing, public talks, and other activities.

• Generous time off, including vacation, national holidays, sick leaves, and family days.

• Personalized learning programs tailored to your interests and skill development.

• Free tech webinars and meetups organized by Svitla.

• Regular corporate online activities.

• Awesome team and a friendly, supportive community!