# \[TEST NS\] Senior Backend Developer AI at Marketplace integrations

> Hybrid · Poland · Senior · Backend · open. Source: https://alderhq.app/jobs/recruitee%3Atechpartnerships%3A2536069 (read 2026-11-08).

## Facts (observed)

- Company: [Marketplace integrations](https://alderhq.app/companies/marketplace-integrations)
- Location text: Poznan, Lubelskie, Poland
- Where it can be done from (inferred): Hybrid · Poland (evidence: "Location: Poznan, Lubelskie, Poland")
- Posted: 2026-03-21 (232 days ago)
- First seen by alder: 2026-11-07 · last verified: 2026-11-07
- Reposted: 0 times · edited: 0 times
- Apply on the employer's site: https://techpartnerships.recruitee.com/o/test-ns-senior-backend-developer-ai
- Skills listed (inferred): JavaScript, CSS, Node.js, PostgreSQL, MongoDB

## Pay and sponsorship

- Posted pay: not posted

## Description (the employer's text)

Backend Developer (Elixir) Position at Tellent.comWe are currently seeking a talented Backend Developer with expertise in Elixir to join our team at Tellent.com. As a Backend Developer, you will play a crucial role in developing and maintaining our backend systems to ensure optimal performance and scalability. Design, develop, and implement backend applications using Elixir programming language Collaborate with cross-functional teams to define, design, and ship new features Optimize and improve existing backend systems for better performance and efficiency Write clean, maintainable, and efficient code Participate in code reviews and provide constructive feedback to peers Stay up-to-date with emerging technologies and trends in backend development If you are passionate about backend development, have a strong foundation in Elixir, and enjoy working in a collaborative environment, we would love to hear from you. Join us at Tellent.com and be part of a dynamic team that is dedicated to innovation and excellence.

### Requirements

Requirements for the Job Opening:Proficiency in Elixir programming language Experience with Node.js, including building applications and APIs Strong understanding of functional programming concepts Ability to work with databases such as PostgreSQL or MongoDB Familiarity with web technologies like HTML, CSS, and JavaScript Experience with version control systems like Git Knowledge of software development best practices and design patterns Excellent problem-solving skills and attention to detail Good communication and teamwork abilities

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Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/recruitee%3Atechpartnerships%3A2536069 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.