Senior Java Developer
⚲ Gliwice
27 720 - 29 400 PLN netto (B2B)
Wymagania
- Java
- Spark
- Scala
Opis stanowiska
co.brick talents — powered by AI, powered by people.
Senior Backend Engineer (Scala / Java) – 3-Month Project
•
Salary: Up to 175 PLN/h net + VAT (B2B Contract)
• Location: Hybrid – Warsaw or Kraków (strictly 3 days/week from the office – non-negotiable)
• Onboarding: 2 weeks on-site in Malmö, Sweden (fully covered)
• Project Duration: 3 months
• Start Date: ASAP/Beginning of August at the ABSOLUTE LATEST
About the Client & Project
On behalf of our client, an innovative company from the technology sector, we are looking for a Strong Senior Backend Developer to join a short-term, high-impact project. The main goal is to modernize and optimize core backend services, streamline data pipelines, and enhance system security.
This is a highly autonomous role requiring a seasoned engineer who can jump straight into a complex ecosystem, utilize automation tools for framework upgrades, and handle heavy data migration tasks.
Key Responsibilities
• Modernize and refactor backend services by upgrading legacy Java and Scala-based frameworks.
• Leverage automation and modern tooling to expedite code transformations, dependency resolution, and compatibility fixes.
• Migrate legacy authentication mechanisms across various services to secure, OAuth-based solutions.
• Consolidate multiple data stores into unified, versioned tables by designing and executing heavy Spark/Java batch pipelines.
Requirements
Minimum of 5 years of commercial backend experience (7+ years is highly preferred).
• Deep production experience with Java and Scala.
• Strong familiarity with Play Framework OR Akka (experience with Akka/Pekko is highly acceptable if you are ready to work with Play environments).
• Hands-on experience with Spark for complex, heavy data pipeline processing.
• Solid understanding and practical experience with OAuth authentication patterns.
• Excellent communication skills with Full Professional English (the project language is 100% English).
•
Full availability for a 2-week onboarding trip to Sweden at the very start of the contract.
Nice to Have
• Basic understanding or exposure to frontend technologies (React / TypeScript).
• DevOps mindset: familiarity with CI/CD pipelines, Gradle, and scripting.
What We Offer
• A transparent, quick 2-stage recruitment process.
• An attractive hourly rate with seamless B2B invoicing.
• An opportunity to work on a high-exposure architectural modernization project for an international client.
Senior Backend Engineer (Scala / Java) – 3-Month Project
•
Salary: Up to 175 PLN/h net + VAT (B2B Contract)
• Location: Hybrid – Warsaw or Kraków (strictly 3 days/week from the office – non-negotiable)
• Onboarding: 2 weeks on-site in Malmö, Sweden (fully covered)
• Project Duration: 3 months
• Start Date: ASAP/Beginning of August at the ABSOLUTE LATEST
About the Client & Project
On behalf of our client, an innovative company from the technology sector, we are looking for a Strong Senior Backend Developer to join a short-term, high-impact project. The main goal is to modernize and optimize core backend services, streamline data pipelines, and enhance system security.
This is a highly autonomous role requiring a seasoned engineer who can jump straight into a complex ecosystem, utilize automation tools for framework upgrades, and handle heavy data migration tasks.
Key Responsibilities
• Modernize and refactor backend services by upgrading legacy Java and Scala-based frameworks.
• Leverage automation and modern tooling to expedite code transformations, dependency resolution, and compatibility fixes.
• Migrate legacy authentication mechanisms across various services to secure, OAuth-based solutions.
• Consolidate multiple data stores into unified, versioned tables by designing and executing heavy Spark/Java batch pipelines.
Requirements
Minimum of 5 years of commercial backend experience (7+ years is highly preferred).
• Deep production experience with Java and Scala.
• Strong familiarity with Play Framework OR Akka (experience with Akka/Pekko is highly acceptable if you are ready to work with Play environments).
• Hands-on experience with Spark for complex, heavy data pipeline processing.
• Solid understanding and practical experience with OAuth authentication patterns.
• Excellent communication skills with Full Professional English (the project language is 100% English).
•
Full availability for a 2-week onboarding trip to Sweden at the very start of the contract.
Nice to Have
• Basic understanding or exposure to frontend technologies (React / TypeScript).
• DevOps mindset: familiarity with CI/CD pipelines, Gradle, and scripting.
What We Offer
• A transparent, quick 2-stage recruitment process.
• An attractive hourly rate with seamless B2B invoicing.
• An opportunity to work on a high-exposure architectural modernization project for an international client.
🔍 Dekoder Ogłoszenia
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high-impact project
Projekt, który ma znaczący wpływ na firmę, ale może wiązać się z presją czasu i wysokimi oczekiwaniami.
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highly autonomous role
Oczekuje się, że będziesz pracować samodzielnie z minimalnym nadzorem, co może oznaczać brak wsparcia lub jasnych wytycznych.
🔴
jump straight into a complex ecosystem
Będziesz musiał szybko zrozumieć i zacząć pracować w istniejącym, prawdopodobnie trudnym do ogarnięcia środowisku.
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heavy data migration tasks
Prace związane z migracją danych mogą być czasochłonne, skomplikowane i obarczone ryzykiem błędów.
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7+ years is highly preferred
Chociaż wymagane jest 5 lat doświadczenia, kandydaci z 7+ latami będą traktowani priorytetowo, co może utrudnić zdobycie tej roli.