Middle Backend Engineer
Job Description
Finonex, a company specializing in innovative online financial trading platforms, is seeking a Middle Backend Engineer to join their dynamic team. This position, facilitated through On The Spot Development, offers an exciting opportunity to work on cutting-edge financial technology solutions.
The role demands a skilled professional with 3-5 years of experience in Node.js and C#, along with substantial expertise in various databases including MSSQL, PostgreSQL, Redis, and MongoDB. The ideal candidate will have experience with cloud platforms (AWS, Azure, or GCP) and a strong background in developing RESTful APIs and web applications.
As a Middle Backend Engineer, you'll be responsible for developing and maintaining reusable code libraries, participating in code reviews, and contributing to the continuous improvement of Agile development processes. The position requires someone who can work effectively with microservices architectures and handle high-scale production environments.
The company offers an attractive benefits package including medical insurance, educational support, flexible working hours, and a comfortable hybrid working environment in Warsaw. You'll be part of a professional team with an informal and friendly atmosphere, with opportunities for professional growth through various learning initiatives.
Working at Finonex means being at the forefront of financial technology, where you'll help create accessible, secure, and user-friendly trading experiences. The company's focus on cutting-edge technology and continuous innovation makes this an excellent opportunity for a backend engineer looking to make a significant impact in the fintech sector.
The position offers a perfect balance of technical challenges and professional growth, with a strong emphasis on both individual contribution and team collaboration. If you're passionate about financial technology and want to work with modern tech stacks in an environment that values both professional excellence and work-life balance, this role presents an ideal opportunity.
Responsibilities For Middle Backend Engineer
- Collaborate with the design team to translate wireframes and mockups into functional components, ensuring seamless user experiences
- Develop and maintain reusable and efficient code libraries to streamline the development process
- Participate in code reviews, providing constructive feedback and ensuring code quality and adherence to best practices
- Contribute to the continuous improvement of our Agile development process, including CI/CD pipelines and automated testing
Requirements For Middle Backend Engineer
- 3–5 years of professional experience using Node.js and C#
- At least 2 years of hands-on experience with MSSQL, PostgreSQL, Redis, or MongoDB
- Minimum 1 year of practical experience with AWS, Azure, or Google Cloud Platform (GCP)
- Proven experience managing high-scale production environments
- Strong background in developing RESTful APIs and web applications using frameworks like Express
- Solid understanding of Agile methodologies
- Experience with message queues or event streams such as RabbitMQ or Kafka
- Excellent verbal and written communication skills
- Ability to work independently
- Comfortable working in Windows or Linux environments, and with container technologies like Docker
- Familiarity with designing and building event-driven microservices architectures
- Bachelor's degree in Computer Science or related field
Benefits For Middle Backend Engineer
- Work in a highly professional team with informal and friendly atmosphere
- 20 business days paid vacation per year
- 100% sick leave payment
- Equipment provision
- Partially compensated educational costs
- Legal and Accounting support in Poland
- Comfortable office in Warsaw at Prosta 51
- 5 sick days per year
- Medical insurance (after probation)
- Flexible working hours
- English and Polish classes 2 times a week (online)
- Corporate parties and gifts on significant dates
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