aimlroles

Senior AI Engineer

nexos.ai nexos.ai Open · verified Oct 22, 2026
Hybrid Vilnius Kaunas Full-time Senior AI Engineering

At a glance

Senior AI Engineering role at nexos.ai. Vilnius · full-time.

Pay not stated AI Engineer salary

RoleAI Engineering
SenioritySenior
LocationVilnius
WorkplaceHybrid
EmploymentFull-time
PostedJul 20, 2026 · 3mo ago
Also hiring inKaunas
Role brief

aimlroles summary, based on the employer's posting.

What you'll do

  • Turn AI/ML ideas into research, proofs of concept and product features, working from early exploration through delivery
  • Try AI frameworks and tools against use cases involving context, memory, retrieval and agent workflows
  • Work with product managers and cross-functional teams to shape features from discovery through release
  • Compare proprietary and open-source language models on performance, cost and other measures
  • Track AI developments and, as a bonus, help others understand and adopt AI

What you bring

  • You have delivered AI/ML projects in production and built applications designed to scale
  • You bring substantial hands-on experience with AI development frameworks and related tools
  • You understand LLMs, embeddings, multimodal systems, AI architectures, context engineering and deployed evaluation
  • You can design and maintain scalable AI systems, build proofs of concept and MVPs, and apply software engineering practices

Who this fits

This senior role suits a hands-on engineer who can take ownership, plan work, and bring creative problem-solving to AI product development. The position is hybrid in Vilnius, Lithuania, with flexible working hours.

From the employer

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.

Salary Ranges

  • Gross salary from 5600 EUR/Month (final compensation depends on exact experience)

What We Offer

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

  • Health benefits. Private health insurance, online & on-site workouts (LT) / online workouts & sports access card (PL), 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.