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Offer summary
(Summary generated by AI based on the full job description)
The project focuses on AI optimization and evaluation, targeting large language models (LLM). Required technologies include TypeScript, React, Python, FastAPI, PostgreSQL, AWS. Responsibilities cover building high-performance user interfaces, designing REST APIs, and close collaboration with ML, engineering, and research teams. Work hours are 2:00 p.m. to 10:00 p.m. CET. Benefits include private medical care, Multisport card, flexible working hours.
from: 27 May 2026
to: 26 June 2026
100 - 160 złnet (+ VAT)/ hr.B2B contract (full-time)
100 - 160 złgross/ hr.contract of mandate
Offer parameters
level:senior
working mode:remote
Warszawa, Mokotów
Requirements
Expected technologies
React.js
Python
Operating system
macOS
Our requirements
- Ability to work 2:00 p.m. - 10:00 p.m. (CET) daily.
- Experience in TypeScript coding.
- Solid skills in React.
- Practice with Python and backend framework - FastAPI.
- Knowledge of relational databases like PostgreSQL.
- Experience with cloud environments like AWS.
Optional
- A degree in Computer Science, Mathematics, Statistics, or other quantitative field.
- Familiarity with vector databases and columnar databases
Your responsibilities
- Build high-performance user interfaces for the product (LLM evaluation workflows and data visualizations).
- Design efficient REST APIs.
- Closely collaborate with cross-functional partners in software engineering, design, product, ML, and research.
About the project
You will be cooperating with a leading provider of AI evaluation and optimization solutions, trusted by multinational companies to optimize AI agents and detect performance issues in large language models.
In this role, you will contribute to a product that addresses one of the most important and challenging problems facing society’s adoption of AI today.
Due to the client’s time zone, we would appreciate a candidate who can work until 10:00 p.m.
Join us and make a real impact!
If you’re ready to broaden your horizons and work with an innovative company at the forefront of AI, we’d love to hear from you. You’ll help build the environments that shape how future AI systems are trained, evaluated, and aligned - and collaborate with world-class engineers and researchers on one of the most important technical challenges of our time.
This is how we organize our work
This is how we work
at the client's siteyou focus on a single project at a timeyou can change the projectyou focus on product developmentagile
Team members
backend developerfrontend developerfullstack developertechnical leaderdata scientistproject manager
What we offer
- Private medical care
- Multisport card
- Friendly, informal atmosphere, and direct contact with everyone in the company
- Modern technologies
Benefits
- sharing the costs of sports activities
- private medical care
- remote work opportunities
- flexible working time
- extra social benefits
- baby layette
- school layette
- employee referral program
- charity initiatives
- Gift vouchers for kids (birthdays, Christmas, Child's Day)
Recruitment stages
- 1.HR call (max 15 min.)
- 2.Technical interview with our client (max 50 min.)*
ACAISOFT POLAND Sp. z o.o.
Acaisoft is a Polish company partnering with industry leaders across healthcare, telecom, fintech, and insurance. We specialize in delivering cloud-native, data-driven, and scalable solutions for enterprises operating in fast-moving environments. We currently serve around 30 active customers worldwide, mostly based in the U.S. We specialize mainly in:
* Data Engineering & AI
* Cloud-Native Solutions, including Cost Optimization
* Platform Engineering
Since technology is constantly being developed at such a fast pace, we always strive to be one step ahead of the market and keep up with the latest solutions.
Fullstack Engineer (AI project)
100–160 zł / hr. (CoM), 100–160 zł / hr. (B2B)
I apply to:
ACAISOFT POLAND Sp. z o.o.
Warszawa, Mokotów
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