Senior Software Engineer in Test - IOE: Cardano

Senior Software Engineer in Test - IOE:
Cardano

Posted 4 days ago. Be among the first 25 applicants.

IOG is a technology company focused on blockchain research and development. We are renowned for our scientific approach to blockchain development, emphasizing peer‑reviewed research and formal methods to ensure security, scalability, and sustainability. Our projects include the Cardano blockchain and other products in decentralized finance (DeFi), governance, and identity management, aiming to advance the capabilities and adoption of blockchain and Web3 globally.

We invest in the unknown, applying our curiosity and desire for positive change to everything we do. By fueling creativity, innovation, and progress within our teams, our products and services are designed for people to be fearless and changemakers.

As a Senior Software Engineer in Test at IOE, you are responsible for improving how IOE builds, maintains, and tests software while actively contributing to product development. You lead efforts to ensure the quality of engineering practices within your team, working across teams to identify and implement improvements. This includes sharing code, simplifying complex processes, and championing best testing practices. In this position, you are responsible for writing testable, production‑ready code, and influencing the overall quality and architecture of the software.

As a senior member of the team, you will mentor and grow other engineers, promote test automation, and lead in improving the overall testing culture across IOG.

• Lead test strategy and planning: develop and maintain robust automated testing frameworks to ensure high‑quality software releases
• Test execution: design and execute comprehensive test plans, including unit, integration, and end‑to‑end tests, as well as performance and security testing
• Cross‑team collaboration: work with product management, development, and operations teams to define testing objectives and improve quality processes across the organization
• Mentorship: actively mentor and guide junior test engineers, promoting a culture of continuous learning and technical excellence
• Test automation: build and improve test automation tools and infrastructure, ensuring seamless integration into CI/CD pipelines
• Root cause analysis: lead troubleshooting and debugging efforts, driving toward quick resolution of identified defects and ensuring that quality standards are met
• Understand the business model and how it aligns with the current product focus. Provide feedback to the product team on technical design and testing strategies, and seek opportunities to simplify and improve the product
• Process improvements: proactively suggest and implement improvements to testing processes, methodologies, and tools
• Actively engage in PI Planning, and agile ceremonies, contributing to the refinement of product and test planning at the squad level
• Deployment support: oversee testing during production deployments and perform post‑deployment validation testing
• Stakeholder communication: act as a key point of contact for test‑related discussions with internal and external stakeholders

• Higher degree in Computer Science, Engineering, Mathematics, Logic, Physics, or a related field (Bachelor's or above)
• 7+ years of experience in Test Engineering, with at least 2 years in a senior or leadership role
• Expertise in test automation and in setting up new frameworks from scratch
• Performance and security testing experience is highly desirable
• Experience in distributed systems and networks is a plus
• Proven experience in Agile environments (Scrum, Kanban) and software engineering best practices
• Familiar with testing methodologies (ISTQB or ISEB certification preferred)
• Expertise in automation libraries and tools for various types of tests
• Familiarity with Python programming language
• Experience with Linux, Git and preferably nix
• Hands‑on experience with continuous integration (CI) and continuous deployment (CD) tools and practices
• Familiarity with blockchain development and Haskell experience would be highly desirable
• Able to independently lead testing initiatives, set strategic goals,…