About us
Since 2012, Sixsentix has accelerated innovation through expert software testing and quality assurance services. We provide fast, cutting-edge testing solutions by combining AI-driven automation, proven practices, and deep domain expertise. Our mission is simple: stop bugs from becoming business problems and protect companies from the real cost of poor software quality.
Our culture shapes how we collaborate and support each other. It shows up in our everyday work: we run on grit, ownership, trust, and team spirit. We break limits and continuously improve through challenging the status quo in order to make an impact together.
About the role
In this role, you will work closely with cross-functional teams to define test approaches, automation strategies, and testing architecture across complex enterprise systems. The ideal candidate has extensive experience developing and implementing scalable automation frameworks using open-source technologies, along with a solid understanding of large-scale system architectures.
We are a match if you have:
- Strong proficiency in one or more programming languages commonly used for test automation, such as Python (preferred), Java and/or C#.
- Proficiency with Git or other version control systems for managing test code and collaborating with teams.
- Proficiency in designing and developing scalable APIs is important. Experience preferred in implementing comprehensive test suites, including unit, integration and end-to-end tests to ensure API reliability, security and adherence to industry best practices.
- Ability to interact with databases to set up test data, validate results, and handle test data management, using SQL or ORM frameworks.
- Deep understanding of integrating automated tests into Continuous Integration/Continuous Deployment pipelines using tools like Jenkins, GitLab CI, CircleCI, or Azure DevOps.
- Understanding of prompt engineering, Retrieval-Augmented Generation (RAG), and agent-based pipelines
- Experience with LLM providers and platforms such as OpenAI, Anthropic, or Google Vertex AI.
- Hands-on experience with Python and AI/ML libraries such as LangChain, LlamaIndex, or Hugging Face.
- Strong knowledge of algorithms, data structures, complexity analysis, and ability to extract insights from large datasets.
- Excellent problem-solving skills and attention to detail. Ability to adapt to changing priorities and new challenges.
- Experience working with development teams, product managers, business analysts, and QA engineers to ensure that automated tests meet requirements and fit into the development workflow.
- A systematic engineering approach and an analytical mindset to break down complex tasks and understand underlying issues before finding solutions.
- Exceptional presentation skills with the ability to explain technical concepts to non-technical stakeholders.
- Strong assessment skills to identify client needs and provide tailored solutions.
- Ability to mentor junior developers or QA engineers, providing guidance on best practices for test automation, code reviews, and debugging.
- Strong experience working in Agile environments, including Scrum or Kanban, and collaborating with cross-functional teams in iterative sprints.
- Commitment to quality in all aspects of work with a sense of ownership, taking full responsibility for deliverables
- Fluency in English (speaking and writing).
- Bachelorʼs or Masterʼs degree in Computer Science, Engineering, or related field.
- Knowledge of the financial domain, particularly investment and banking, is a plus.
What you’ll do:
- Apply test frameworks to LLM-based applications, multi-agent systems, and RAG pipelines.
- Contribute as a subject matter expert within a high-performing team.
- Build and maintain long-term client relationships.
- Share expertise and support knowledge exchange within the Sixsentix test consulting community.
Here’s what you can expect:
- Hybrid work model with flexibility tailored to your needs
- Individual budget for professional development and access to L&D platforms
- 15 days of fully paid sick leave (including 3 days without a doctor’s note)
- Private health and 24/7 accident insurance
- Benefits package for new parents
- Loyalty program
- Disciplines where you can contribute to strategic initiatives locally
- International career opportunities across 6 global locations
- Extra vacation days plus company days off for Christmas Holidays
- Tailored team events and team buildings
We look forward to receiving your electronic application (CV, reference letters, etc.) by email to careers.rs@sixsentix.com
Find more information about Sixsentix on www.sixsentix.com
