AI Engineer | Mid-senior

🇵🇱 Warsaw, PL On-site IT Senior Posted May 13, 2026

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LocationWarsaw, PL

WorkplaceOn-site

SenioritySenior

CategoryIT

IT CategoryData Science & ML

LanguageEnglish

PostedMay 13, 2026

Last verifiedMay 13, 2026

Official context

Official sector context

EUR 14.78 / hour Approx. EUR 30,742 / year

Poland country-level public salary context for Professionals in Information and communication; not a role-specific salary estimate, based on 2022 earnings data.

Source: Eurostat Structure of Earnings Survey
Match quality: Context only, not a role salary
Geography: Country-level
Sector: Information and communication
Occupation group: Professionals
Salary observations: 2022 earnings survey
Official record updated: Feb. 9, 2026
Checked by JobGrid: May 11, 2026

JobGrid listing details

JobGrid.eu keeps the employer description in its original language and adds clear listing facts, freshness, and source context so candidates can evaluate the role before applying.

Key details: 1 location, IT, Data Science & ML, On-site, Senior
Current openings: 25 active jobs
Original language: English
Source and freshness: Collected from public career pages and reviewed through JobGrid.eu source availability checks. Last verified: May 13, 2026.
Apply path: JobGrid.eu sends candidates to the original application page and adds non-personal referral parameters.

Join the AI revolution. We’re building an all-in-one AI platform to help teams do their best work and automate every routine task you can think of. We’re looking for problem-solvers to turn powerful AI into an easy, no-code tool for teams everywhere.

Main Responsibilities

Lead AI/ML innovations - from coming up with ideas for research, POCs, to contributing to full product feature build out.
Act as GenAI expert - live and breathe AI field news and trends.
Hands-on work trying out new concepts, AI frameworks and tooling around them for different use cases - context management, memory, retrieval, agentic loop, A2A and many other solutions.
Be part of product development - from discovery together with PMs to delivery within cross-functional teams.
Evaluate new LLMs (proprietary and OSS), and assess for performance, cost, and other metrics.
Bonus: act as AI evangelist to promote the adoption and understanding of AI both within and outside nexos.ai.

Core Requirements

Strong record of work on AI/ML projects in production.
Professional expertise in building production grade applications; designing, executing, and maintaining scalable AI systems.
Vast experience using different AI developer frameworks and tooling.
Solid understanding of large langauge models, embeddings, multimodality, and different AI architectures
Expertise in context engineering and deployed evaluations.
Sense of ownership and accountability, capable of planning your work effectively.
Get Things Done attitude, mixed with a creative approach when needed.
Understanding of software engineering best practices and developing POCs and MVPs under microservice architectures

Bonus Point For

Experience building complex Agentic systems and tools powering them.
Deep expertise in data science methodologies, ML algorithms, and NLP techniques.

What We Offer

• Professional growth. Internal and external events, online training, conferences, books - everything you need to reach full potential.

• Health benefits. Private health insurance, sports access card, online workouts, consultations to feel and be your best.

• Team spirit. Team buildings and parties with games, shows, tastings, food coupons, gifts, and it’s on us.

• More free time. Stay with us and additional vacation days will be added to your calendar.

• Additional paid leave. Additional days are covered by us in cases of illness or special occasions.

• Flexibility. Flexible working time arrangement.

View our guidelines for AI usage during hiring process: AI guidelines