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Ascendion

Senior Backend developer (Banking)

Ascendion
Poland · Full-time · Mid-Senior

WHAT YOU WILL BE DOING

As a Senior Backend developer give support to the Technical Lead & Junior developers, you will be a trusted partner to the business in developing a roadmap to ensure the delivery of technology solutions.

You will contribute to transformation and growth by building high performing IT teams and continuously evolving the platforms that support our business.


We need somebody like you to help us in different fronts:

  • Design, develop, and maintain backend systems and services to support mission-critical applications.
  • Implement and enforce best practices in code quality, testing, CI/CD, and performance optimization
  • Mentor junior developers, fostering high-performing agile and DevOps teams.
  • Work together our “technical leads” helping them in the adoption of modern backend architecture.
  • You will be Accountable for execution teams inside the product:
  • Software delivery
  • Best practices


WHAT WE ARE LOOKING FOR

EXPERIENCE

  • Highly experienced Backend Developer with more than 7 years in IT, specializing in designing and implementing scalable backend solutions, optimizing technical processes, and leading development teams.
  • Strong background in financial services and investment banking technology, with hands-on expertise in modern backend architectures, data streaming, and cloud-native solutions.
  • Adept at translating business requirements into robust, secure, and efficient software systems.


SKILLS & KNOWLEDGE

REQUIRED SKILLS:

  • Experience working with Agile and DevOps delivery teams.
  • Experience managing developers and implementing strategies on code review, pull requests, ..
  • Knowledge of latest software architecture (e.g., public cloud, hybrid cloud, microservice architecture).
  • Hands-on experience with streaming big data technologies (Kafka streams, Java, MongoDB, Elastic).
  • Strong interpersonal and proactive communication skills, ensuring transparency and alignment.


DESIRED SKILLS:

  • Knowledge of Investment Banking Products and Wholesale Banking.
  • Ability to organize team and prioritize tasks within the sprint.
  • Ability to communicate effectively with the business and product teams in setting the vision for data needs and translating it into an end-to-end execution.


Salary

PLN - B2B- 180 to 200/hr

PLN- UOP- 120 - 130/hr

Key Skills

Ranked by relevance

cloud devops big data kafka java cicd
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Posted
Feb 10, 2026
Type
Full-time
Level
Mid-Senior
Location
Poland
Company
Ascendion

Industries

Investment Banking

Categories

Engineering

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