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Quality Assurance Engineer

AddanEx Stockholm, Sweden

onsitecontract
Posted Jan 29, 2026Apply by Feb 28, 2026

Role & seniority: Senior QA Engineer / Test Automation Engineer

Stack/tools: Backend test automation; end-to-end and application-to-application testing; test case writing; coding in test tools; manual and automated testing; regression/integration/performance testing; bug tracking; potential mainframe AS-400 knowledge (nice-to-have)

Top 3 responsibilities

  1. Develop and execute test plans and test cases from product specs; perform manual and automated testing

  2. Identify, document, and track defects; collaborate with development teams; conduct regression, integration, and performance testing

  3. Mentor/guide testers in a large program, ensure testing structure, and drive QA process improvements; collaborate with program stakeholders

Must-have skills

  • Several years in QA / Test Automation

  • Backend-focused automation; experience writing test cases and coding in test tools

  • End-to-end and A2A testing across multiple applications

  • Banking/Financial industry experience; ability to work with complex systems

  • Strong problem-solving, structured approach, attention to detail

  • Stakeholder management and ability to work independently and in teams under deadlines

  • Technical background or education; English proficient

Nice-to-haves

  • Mainframe systems knowledge (AS-400)

  • Experience with large transformations/integrations and large programs

  • Formal QA/process improvement experience; prior mentoring roles

  • Location & work type: Stockholm, Swede

Full Description

AddanEx JOB POSTING

Title: Senior QA Engineer (Test Automation Engineer)

Location: Stockholm, Sweden (Onsite 3 days per week)

Type: Contract

Start Date: ASAP / February-March

Duration: 31/12/2026 + Extensions

Utilisation: 40 Hours per week

Languages: English

Job Summary / Key Skills

Requirements

  • Several years’ experience as a QA Engineer / Test Automation Engineer

Backend Test automation focus (NOT: User Interface focus) Experienced writing test cases, coding in test tools and testing end-to-end flows between several applications Experienced with Application-to-Application test automation tasks and setting format and protocols. Banking or Financial industry experience

Soft Skills /Bonus

  • You have strong problem-solving skills and is structured and with excellent attention to detail.
  • You have experience of working with complex systems and/or large/complex projects and thrive in a fast-paced environment.
  • You are used to networking and using your communicative ability when working with stakeholder management in several areas.
  • You like to work both independently and with others and can work under tight deadlines while maintaining multiple tasks/projects.
  • As a person you have a strong drive and like to take initiatives, and you can define a task even if it initially is vague. You are pragmatic, adaptable and prestige less.
  • You have experience of large initiatives and/or large organizations with complex integrations.
  • You have a technical background, a technical education and/or been working as a developer or tester.
  • Knowledge of mainframe systems such as AS-400 is a bonus

Description

  • The area of Custody is running a major transformation, implementing a new IT platform that will support our business and operation in future proofing the services in the area. You will get the opportunity to contribute to the transformation by working with requirements in this initiative.
  • Looking for a Senior QA Engineer, that will provide expertise knowledge and support for test automation, performance testing, and migration testing. Part of assignment will be to mentor/guide system and acceptance testers in how to test efficiently in a large program like NGC. You will also be responsible for hands-on work with integration testing and providing capabilities for test automation.
  • As Senior QA Engineer you will also secure proper structure in the testing needed for the initiative. You will work towards stakeholders as Program Test Lead, Chief Product Owners, Product Owners, Architects, Tech Leads, Tech teams, Project Managers and Managers.
  • A Quality Assurance Engineer is responsible for ensuring that software products and systems meet the required standards of quality before they are released to end users. QA Engineers work closely with developers, product managers, and other stakeholders to understand product requirements and identify potential risks and defects.

Key Responsibilities

  • Develop and execute test plans and test cases based on product requirements and specifications.
  • Perform manual and automated testing to identify bugs, usability issues, or performance bottlenecks.
  • Report and track defects using bug tracking tools, ensuring clear documentation of issues for developers.
  • Collaborate with development teams to understand features and technical implementations.
  • Conduct regression, integration, and performance testing to ensure ongoing product stability.
  • Ensure compliance with quality standards and best practices throughout the software development lifecycle.
  • Contribute to the continuous improvement of QA processes and tools. You will be a part of the newly established Department and work against several teams and stakeholders. You will get the opportunity to discuss problems and opportunities with other roles in the program but still be self-governing and plan your own schedule. We have an open culture where teamwork is the key to our success.
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