Senior AI Engineer (with Backend & Platform experience)

1global; Berlin; Hybrid; EUR 110,000 - 140,000; Full time

Benefits offered by this job

Growth opportunities

International exposure

Professional development

Collaborative culture

Job summary

1GLOBAL in Berlin is seeking a Senior AI Engineer who will design and build the AI platform and internal tools, including LLM gateway integration and secure data pipelines. You will set architectural direction and establish governance for AI tooling across engineering teams.

You will contribute hands-on backend work with Python, build scalable services, and collaborate with product managers and engineers to deliver AI-powered capabilities for internal use and future customer-facing features.

Qualifications

• 5+ years of software engineering with recent work integrating LLMs into real systems.
• Strong backend engineer with Python proficiency and full-stack capabilities for internal tools.
• Hands-on experience with AI gateways or model routing layers (LiteLLM, Portkey, AWS Bedrock).
• Experience building MCP servers or similar tool-calling and agent integration patterns.

Responsibilities

• Design and build central AI platform development and governance, including wallets, guardrails, and observability.
• Engineer architecture for internal AI tools and MCP servers, including RAG pipelines and vector search.
• Build secure ingestion/indexing pipelines for internal knowledge sources with proper access controls.
• Develop backend services and APIs exposing AI capabilities to internal users and future product teams.
• Establish engineering standards for testing, deployment, monitoring, and model evaluation frameworks.
• Own full development lifecycle from requirements to production monitoring with a bias toward shipping.

Skills

Python

Backend engineering

LLM integration

Docker

Kubernetes

CI/CD

Security practices

Communication

English fluency

Tools

AWS Bedrock

LiteLLM

Portkey

MCP servers

Job description

Senior AI Engineer (with Backend & Platform experience)

Technology

Berlin, Germany

Full-time

Founded in 2022, 1GLOBAL has rapidly become one of Europe's fastest-growing telecom technology companies, connecting more than 80 million people and devices globally. Our customers include leading banks, multinational enterprises, global retailers, travel companies, payment service providers, and digital-first businesses.

Headquartered in the Netherlands, with R&D hubs in Lisbon, Berlin, and São Paulo, 1GLOBAL employs over 550 professionals across 16 countries. With annual revenues exceeding US$200 million and a strong track record of profitability, we continue to invest in innovation, infrastructure, and international expansion as we redefine the future of global mobile connectivity.

About the Team

We are building a new AI team within Engineering, tasked with driving AI adoption across 1GLOBAL. The team’s mission is to make AI a practical, governed, and well-supported capability for every part of the company, from the engineers writing our software to the operations teams running the business. Beyond the internal platform, the team will contribute AI-powered capabilities to our commercial product lines.

This is a foundational hire. As one of the first engineers on the team, you will work alongside a dedicated product manager and engineering team lead to set the technical direction, make early architectural decisions, and build the systems that the rest of the AI function will grow on.

About the Role

• Desing and build central AI platform development and governance:AWS Bedrock fronted by an LLM gateway (LiteLLM, Portkey, or similar). Token budgets, rate limits, key management, guardrails, audit logging, observability, cost controls.
• Engineer the technical architecture of 1GLOBAL’s internal AI tools and MCP servers, including RAG pipelines, vector search, LLM integration, and conversational interfaces.
• Build secure ingestion and indexing pipelines for internal knowledge sources (Confluence, SharePoint, document repositories, internal APIs) with appropriate access controls.
• Develop backend services and APIs that expose AI capabilities to internal users and, over time, to product teams building customer-facing features.
• Establish engineering standards for the AI function: testing, deployment, monitoring, and model evaluation frameworks.
• Own the full development lifecycle from requirements through production monitoring, with a bias toward shipping and iterating.

Requirements

About You

• 5+ years of software engineering experience,with meaningful recent work integrating LLMs into real systems. Deep traditional ML or model-training background is not required.
• Strong generalist backend engineer. Python proficiencyis expected. You’re comfortable building a full-stack internal tool end-to-end and shipping it without waiting for permission.
• Hands-on experience with AI gateways or model routing layers such as LiteLLM, Portkey, or AWS Bedrock - including token limits, guardrails, observability, and cost management.
• Practical experience building MCP servers, or strong fluency with similar tool-calling and agent integration patterns. MCP specifically is a plus.
• Power user of AI codingagents (Claude Code, Codex, or similar). You can define skills, workflows, and standards that make other engineers more effective - not just use the tools yourself.
• Working knowledge of RAG, vector search, and LLM evaluation. You understand the trade-offs and can build a solid pipeline. Depth in this area is a plus, not a prerequisite.
• Comfortable with CI/CD, containerization (Docker, Kubernetes), and infrastructure-as-code.
• Familiarity with data security practices - PII handling, access controls, data classification. Experience in regulated environments (telecommunications, financial services, ISO 27001) is an advantage.
• Strong communicator. Much of this role is making other engineers and non-technical teams more effective. You can explain technical trade-offs clearly. Fluent in English.
• Self-directed and comfortable with ambiguity. You will be shaping a function, not joining a mature one.

Why 1GLOBAL?

• Growth Opportunities: Advance your career in one of the fastest growing telecommunications companies, expanding over 50% year-on-year under the leadership of successful tech entrepreneurs.
• Major Transaction Exposure: Be in the driver’s seat for transactions that will have an impact on the future telco industry.
• Work with a Talented Team: From the Board and the Founders to the Senior Management Team, you will collaborate daily with the most capable and renowned external advisors and constantly being exposed to talented and driven individuals.
• Dynamic Work Environment: Thrive in a collaborative, fast-paced workplace where innovation is encouraged, and every contribution counts.
• Professional Development: Work alongside industry experts to enhance your skills and knowledge in a cutting-edge field.
• International Experience: Gain opportunities to work in different 1GLOBAL offices around the world as you grow within the company.
• Open Communication Culture: Join a team where your ideas are heard, and open dialogue is encouraged, fostering a supportive and transparent work environment.
• Get Things Done Attitude: Be part of a results-driven team that values efficiency, creativity, and the drive to make a tangible impact in the industry.

1GLOBAL is an equal opportunity employer, we value your character as much as your talent. Diversity drives our innovation, and we offer a collaborative, dynamic, and international work environment. We are excited for you to join our mission to revolutionise connectivity globally.

1GLOBAL is a trading name of 1GLOBAL Holdings B.V.