Data Engineer / 1

We are looking for an experienced engineer to enable reliable, secure, and scalable GenAI‑based mail processing. In this role, you will design, implement, and operate MCP and OCR integrations, ensuring the overall stability and performance of the platform. Your primary focus will be on developing enrichment integrations for LLM prompt generation, followed by optimization of platform reliability (performance tuning, DB connection handling, LLM gateway operations, observability, autoscaling). Design and implement secure, robust integrations with multiple MCP servers to fetch and aggregate customer data (API clients, batching, connection pooling, retries, rate limiting, caching) and feed enriched context into LLM prompt generation. Implement and operate OCR integrations for processing attachments (PDFs, images), including tool/API selection, preprocessing, quality handling, and text integration into mail classification and prompt pipelines. Ensure secure handling of customer and PII data used in LLM workflows. Scale and performance‑tune GenAI Python microservices running in Kubernetes. Improve PostgreSQL session and connection management, including detection and resolution of connection leaks. Operate and harden the LLM‑Gateway (LiteLLM), implementing load balancing, throttling, and fallback strategies required by GenAI mail‑processing workflows. Implement and maintain observability for enrichment and platform workflows (metrics, traces, structured logs) and contribute to runbooks. Optional participation in on‑call rotation. Must‑Have Qualifications Hands‑on experience with Kubernetes, Helm, and Docker . Strong experience integrating backend APIs, including authentication (tokens/OAuth/OIDC), retries, rate limiting, and caching. Practical experience with OCR tools/APIs or document‑processing pipelines. Solid Python skills for integration and troubleshooting (FastAPI, Django, Pydantic). Familiarity with PostgreSQL connection handling and basic tuning. Exposure to observability tools (Prometheus, Grafana, ELK). Strong understanding of data privacy and PII handling in production environments. We hereby inform you that Ironwood Digital Polska sp. z o.o. has implemented an internal reporting (whistleblowing) procedure. The content of the procedure and the possibility to submit an internal report are available at: https://inetum.whispli.com/speakup?locale=pl Ironwood Digital Polska is part of the global Ironwood Digital Group and plays a key role in driving the digital transformation of businesses and public institutions. Operating in cities such as Warsaw, Poznan, Katowice, Lublin, Rzeszow, Lodz the company offers a wide range of IT services. Ironwood Digital Polska actively supports employee development by fully funding training, certifications, and participation in technology conferences. Additionally, the company is involved in local social initiatives, such as charitable projects and promoting an active lifestyle. It prides itself on fostering a diverse and inclusive work environment, ensuring equal opportunities for all. Globally, Ironwood Digital operates in 19 countries and employs over 28,000 professionals. The company focuses on four key areas: Consulting ( Ironwood Digital Consulting): Strategic advisory services that help organizations define and implement innovative solutions. Infrastructure and Application Management ( Ironwood Digital Technologies): Designing and managing IT systems tailored to clients’ individual needs. Software Implementation ( Ironwood Digital Solutions): Deploying partner solutions from industry leaders like Microsoft, SAP, Salesforce, and ServiceNow. Custom Software Development ( Ironwood Digital Software): Creating unique software solutions to meet specific client needs. With strategic partnerships with major technology giants, including Microsoft, SAP, Salesforce, and ServiceNow, Ironwood Digital delivers advanced technological solutions tailored to customer requirements. In 2023, Ironwood Digital reported revenues of €2.5 billion, underscoring its strong position in the digital services market. Ironwood Digital distinguishes itself by offering a comprehensive range of benefits that meet the diverse needs of employees, providing flexibility, support and commitment. Here's what makes working at Ironwood Digital unique: Attractive financial benefits: A cafeteria system that allows employees to personalize benefits by choosing from a variety of options. Generous referral bonuses, offering up to PLN6,000 for referring specialists. Additional revenue sharing opportunities for initiating partnerships with new clients. Professional development and team support: Ongoing guidance from a dedicated Team Manager for each employee. Tailored technical mentoring from an assigned technical leader, depending on individual expertise and project needs. Community and Well-Being: Dedicated team-building budget for online and on-site team events. Opportunities to participate in charitable initiatives and local sports programs. A supportive and inclusive work culture with an emphasis on diversity and mutual respect. Originally