Senior Software Engineer in Test - IOE: Cardano

Input Output (IOHK); United Kingdom; On-site; GBP 60,000 - 80,000; Full time

Benefits offered by this job

Remote work

Laptop reimbursement

Learning & Development opportunities

Competitive PTO

Job summary

A technology company focused on blockchain development is seeking a Senior Software Engineer in Test to lead the testing strategy and improve the overall testing culture. The role requires extensive experience in test engineering, expertise in test automation, and a collaborative approach to mentoring others. This position offers remote work options and a focus on continuous learning and development.

Qualifications

• 7+ years of experience in Test Engineering, with at least 2 years in a senior role.
• Expertise in setting up test automation frameworks from scratch.
• Familiarity with blockchain development is highly desirable.

Responsibilities

• Lead test strategy and planning to ensure high-quality software releases.
• Mentor junior test engineers, promoting a culture of continuous learning.
• Oversee testing during production deployments and post-deployment validation.

Skills

Test automation

Performance testing

Security testing

Agile methodologies

Problem-solving

Communication

Linux

Python

Education

Higher degree in Computer Science or related field

Tools

Continuous Integration/Continuous Deployment (CI/CD) tools

Automation libraries and tools

Git

Job description

Senior Software Engineer in Test - IOE: Cardano

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

About IOG

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.

What the role involves

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

Requirements

• 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, and guide junior team members
• Highly detail‑oriented with a strong focus on quality and precision
• Consistently seeks to learn and apply new technologies, staying updated with advancements in testing tools and practices
• Strong problem‑solving skills, able to break down complex issues and identify root causes efficiently
• Strong verbal and written communication skills, able to articulate technical information clearly to various stakeholders
• Capable of working independently with minimal supervision, driving projects from conception to completion

Who you are

We are looking for a collaborative and proactive engineer who thrives in a fast‑paced environment, enjoys mentoring others, and proactively shapes our testing strategy.

Benefits

• Remote work
• Laptop reimbursement
• New starter package to buy hardware essentials (headphones, monitor, etc)
• Learning & Development opportunities
• Competitive PTO

At IOG, we value diversity and always treat all employees and job applicants based on merit, qualifications, competence, and talent. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.