Senior AI/ML Engineer: Build Scalable Production AI

Lingaro; Polska; On-site; PLN 200,000 - 320,000; Full time

Job summary

Lever, Inc. is seeking an experienced software engineer to help build and evolve AI capabilities across multiple construction software products.

You will design production-grade AI systems, implement retrieval pipelines and agent workflows, and create artifacts that improve clarity, speed, and quality of delivery. The role requires hands-on experience with Generative AI, LLMs, and cloud platforms, plus strong architectural judgment and collaboration across product and engineering teams.

Qualifications

• 5+ years hands-on software engineering experience in production-grade AI or data-intensive systems.
• Excellent Python programming skills.
• Proficiency in Azure/AWS cloud platforms.
• Hands-on experience with Generative AI technologies and applications.
• Strong understanding of LLMs, retrieval-augmented generation, tools, agents and trade-offs.
• Experience designing and operating end-to-end AI systems across APIs, data pipelines, retrieval layers, and cloud infra.
• Ability to define measurable quality criteria and evaluation approaches for AI systems.
• Experience with AI-assisted engineering and Spec-Driven Development.
• Strong architectural judgment to design reusable patterns and shared capabilities.
• Track record of cross-functional work from exploration to production in agile environments.
• Ability to influence engineers and raise technical standards.
• Strong communication and collaboration with product, engineering, business.
• Adaptive mindset and openness to change in fast-moving AI fields.
• Master's degree in CS/SE/AI or related field; equivalent experience considered.

Responsibilities

• Build and evolve shared AI capabilities, reusable services, and accelerators across multiple construction software products.
• Design and implement production-grade AI systems including LLM-based experiences, retrieval pipelines, tool use, orchestration layers, and agent workflows.
• Create specs, evals, interface definitions, and workflow contracts to improve clarity, speed, and quality of delivery.
• Define evaluation-driven development loops for AI systems covering quality, reliability, latency, cost, grounding, and other performance dims.
• Partner with product teams to identify high-value cross-product opportunities and support integration of shared capabilities.
• Contribute to AI-native engineering practices via Spec-Driven Development, AI-assisted workflows, automated testing, and intelligent agents.
• Apply guardrails for AI reliability, observability, governance, security, and responsible production use.
• Prototype and validate new technical approaches, turning AI capabilities into scalable building blocks with business relevance.
• Support and guide engineers through collaboration, peer review, and knowledge sharing in AI engineering.
• Work with AI PM/PO, engineering, and business stakeholders to align implementation with customer value and measurable outcomes.

Skills

Python

Azure/AWS

Generative AI

LLMs & RAG

End-to-end AI systems

Quality criteria

AI-assisted engineering

Architectural patterns

Cross-functional collaboration

Communication skills

Adaptability

Education

Master's degree in Computer Science, Software Engineering, AI, or related field

Job description

Lever, Inc. is seeking an experienced software engineer to help build and evolve AI capabilities across multiple construction software products.

You will design production-grade AI systems, implement retrieval pipelines and agent workflows, and create artifacts that improve clarity, speed, and quality of delivery. The role requires hands-on experience with Generative AI, LLMs, and cloud platforms, plus strong architectural judgment and collaboration across product and engineering teams.