Senior Backend Engineer-.NET Core

1 Month ago • 4 Years +
Backend Development

Job Description

Papaya is launching a new game-changing initiative and seeks a passionate Senior Backend Engineer to join its core team. This role offers a unique opportunity to shape and influence an exciting B2C product, a gamified social platform. The engineer will design and build backend systems, supporting social network and economy features, and enhancing recommender systems and video processing capabilities using .NET Core, AWS, Kubernetes, and Docker. It's ideal for a problem solver thriving in a startup environment.
Good To Have:
  • Experience with social platforms, gaming systems, or B2C products.
  • Background in recommendation algorithms.
  • Understanding of startup dynamics and ability to contribute to a fast-paced, evolving product.
Must Have:
  • Design and build scalable backend systems using .NET Core and AWS.
  • Work on backend services, cloud architecture, infrastructure, and recommender systems.
  • Develop microservices and manage their lifecycle from development to production.
  • Implement and maintain DevOps best practices using Docker, Kubernetes, CI/CD.
  • Collaborate with cross-functional teams for robust monitoring and debugging.
  • Continuously experiment with new technologies to improve performance and scalability.
  • Solve complex problems focusing on high availability, reliability, and maintainability.
  • 4+ years experience in backend development, preferably with .NET Core.
  • Strong understanding of computer science principles.
  • Experience with cloud platforms (AWS, GCP), microservices, and distributed systems.
  • Experience with Docker, Kubernetes, and CI/CD tools.
  • Familiarity with SQL or NoSQL databases, design, and optimization.
  • Experience with debugging, logging, and monitoring for microservices systems.
  • Passion for working in a startup environment and embracing new technologies.
  • Ability to work on multiple areas including backend, infrastructure, and advanced features.
Perks:
  • Join a profitable company with the heart of a startup.
  • Enjoy a hybrid work model with flexibility and a growing Warsaw office.
  • Receive competitive compensation tailored to the Polish market- B2B Service agreement.
  • Comfortable office in central Warsaw equipped with all necessary tools.
  • Luxmed Medical services.
  • Monthly 'Uber Eats' voucher.
  • Multisport card.
  • Monthly Happy Hours.
  • Snacks and Breakfasts.

Add these skills to join the top 1% applicants for this job

cross-functional
problem-solving
data-structures
game-texts
agile-development
aws
.net-core
nosql
ci-cd
docker
microservices
kubernetes
sql
algorithms
system-design

Description

Papaya is launching a new game-changing initiative, and we’re looking for a passionate and driven Backend Engineer to join our core team. This role offers a unique opportunity to shape and influence the early stages of an exciting B2C product. As the second developer in a small, agile startup, you’ll play a pivotal role in designing and building the backend platform, tackling challenges that push the boundaries of technology across multiple domains.

Our product is a vibrant, gamified social platform that lets users compete in mini-games, post relevant content, and engage with others in a competitive, social ecosystem. You’ll be working on backend systems supporting the social network and economy features, as well as developing and enhancing our recommender system and video processing capabilities.

You’ll be using technologies such as .NET Core, AWS, Kubernetes, and Docker. This is the perfect role for a big thinker and problem solver who thrives in a startup environment and is passionate about building innovative products.

Responsibilities

  • Design and build scalable backend systems using .NET Core and AWS.
  • Work on a variety of domains: backend services, cloud architecture, infrastructure, and the recommender system.
  • Develop microservices and manage the entire lifecycle from development to production.
  • Implement and maintain DevOps best practices using Docker, Kubernetes, CI/CD pipelines.
  • Collaborate with cross-functional teams to ensure robust monitoring and debugging of services, both locally and remotely.
  • Continuously experiment with new technologies and tools to improve system performance and scalability.
  • Solve complex problems with a focus on high availability, reliability, and maintainability.

Requirements

  • 4+ years of experience in backend development, preferably with .NET Core (open to other languages with a fast learning curve).
  • Strong understanding of computer science principles (data structures, algorithms, system design).
  • Experience with cloud platforms (AWS, GCP, etc.).
  • Solid background in microservices architecture and distributed systems.
  • Experience working with Docker, Kubernetes, and CI/CD tools.
  • Familiarity with either SQL or NoSQL databases, and experience in database design and optimization.
  • Experience with debugging, logging, and monitoring for microservices systems.
  • Passion for working in a startup environment and embracing new technologies.
  • Ability to work on multiple areas including backend, infrastructure, and advanced features (e.g., recommender systems, video processing).

Nice-to-Have:

  • Experience with social platforms, gaming systems, or B2C products.
  • Background in recommendation algorithms.
  • Understanding of startup dynamics and ability to contribute to a fast-paced, evolving product.

What We Offer:

  • Join a profitable company with the heart of a startup – stable, growing, and full of energy.
  • Enjoy a hybrid work model with flexibility and a growing Warsaw office.
  • Receive competitive compensation tailored to the Polish market- B2B Service agreement
  • Comfortable office in central Warsaw equipped with all the necessary tools to conquer the universe
  • Luxmed Medical services
  • Monthly 'Uber Eats' voucher
  • Multisport card
  • Monthly Happy Hours
  • Snacks and Breakfasts.

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