Software Development Engineer in Test (SDET) - Midnight

IOHK; United Kingdom; Hybrid; GBP 50,000 - 80,000; Full time

Job summary

IOHK is seeking a Senior Software Development Engineer in Test (SDET) to join their innovative Midnight team. This role is pivotal in ensuring the quality and performance of cutting-edge blockchain solutions. The ideal candidate will have strong automation skills, a solid understanding of blockchain, and a proactive approach to quality assurance throughout the software development lifecycle.

Benefits

New starter package to buy hardware essentials

Competitive PTO

Medical Benefits

Qualifications

• Proven experience as an SDET in quality assurance/testing role.
• Proficiency in automation and CI/CD pipeline implementation.
• Strong understanding of software development life cycle (SDLC) and Agile practices.

Responsibilities

• Develop and execute a comprehensive testing strategy for blockchain solutions.
• Lead the testing of new initiatives and oversee QA strategy for scrum teams.
• Conduct manual and automated testing, identifying and tracking defects.

Skills

Automation skills

Blockchain technology

Quality Assurance

CI/CD pipelines

Agile methodologies

API testing

Education

Bachelor's degree in computer science

Tools

Git

Docker

Job description

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Client:

IOHK

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Other

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EU work permit required:

Yes

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Job Reference:

a7a83cc38d0b

Job Views:

5

Posted:

29.06.2025

Expiry Date:

13.08.2025

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Job Description:

Who are we?

IOHK, 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 decentralized finance (DeFi), governance, and identity management, aiming to advance the capabilities and adoption of blockchain technology 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, to be changemakers.

About Midnight:

IOG's Midnight Tribe is a business technology provider and core contributor to the Midnight Network, a blockchain platform for developing decentralized applications that safeguard personal and commercial data. The Midnight Network is the first blockchain to offer programmable data isolation by leveraging zero-knowledge (ZK) proofs to enable selective disclosure of what information is visible on-chain and is designed to help developers implement necessary business policies, such as meeting regulatory requirements.

What the role involves:

As an experienced Senior Software Development Engineer in Test (SDET) who will be a key contributor on the Midnight team developing leading edge technology in one of the most exciting fields in the world. Midnight is a regulatory-friendly data protection-based blockchain that safeguards sensitive commercial and personal data. Midnight protects fundamental freedoms of association, commerce, and expression for developers, companies, and individuals.

You will play a pivotal role in ensuring the reliability, security, and performance of our cutting-edge blockchain solutions. You will collaborate closely with the Head of QA to design, implement, and execute robust test strategies, contributing to the success of our blockchain products.

Most importantly, you will be a person who shows strong initiative and has a proactive approach to Quality Assurance across the SDLC.

• Help Develop and execute a comprehensive testing strategy for our blockchain solutions, encompassing functional, performance, security, and integration testing.
• Review Team Test Plans and oversee the general QA Strategy for each of the scrum teams/squads
• Lead the testing of new Initiatives, and guide other team members in how to approach, execute and report on new areas of testing
• Implement and maintain continuous integration (CI) and continuous deployment (CD) pipelines for automated testing.
• Develop and maintain automated test scripts using relevant testing frameworks and tools.
• Conduct manual testing when necessary, including exploratory testing, regression testing, and ad-hoc testing.
• Identify, report, and track defects to resolution.
• Perform root cause analysis of defects and work with development teams to implement timely solutions.
• Set up and maintain test environments, including test data and test configurations.
• Plan and conduct performance testing to assess scalability, reliability, and responsiveness of our blockchain solutions.
• Maintain accurate and up-to-date test documentation, including test plans, test cases, and test reports.
• Contribute to the development and enhancement of test automation frameworks.
• Collaborate closely with cross-functional teams, including software developers and product managers, to ensure the testability, reliability, and scalability of our products.

Requirements

Who you are:

• Proven experience as an SDET or in a similar quality assurance/testing role.
• Proficiency in automation skills, including the ability to write automated test scripts and establish and maintain CI/CD pipelines.
• Strong understanding of blockchain technology, including consensus algorithms and smart contracts (a plus).
• Sound knowledge of software development life cycle (SDLC) methodologies, including Agile and DevOps practices.
• Bachelor's degree in computer science, software engineering, or a related field (advanced degrees are a plus).
• Experience of agile methodologies.
• Experience with modern testing frameworks.
• Experience in test automation for front-end/back-end and end-to-end systems.
• Experience working with Git, SDLC, and various CI/CD tools (, GitHub Actions).
• Experience as QA Lead desired but not essential
• Experience in performance and security testing is a plus.
• Experience with API testing.
• Experience in distributed systems and computer networks would be beneficial.
• Expertise in libraries, tools, and procedures for executing and automating various types of tests (, unit tests, property tests, model-based tests, integration tests, end-to-end tests, UI tests, performance tests, stress tests, fault tolerance tests).
• Familiarity with Virtualization using Docker.
• Proficiency with Linux.

Are you an IOGer?

Do you find yourself questioning the status quo? Do you tinker with ideas and long to turn those ideas into solutions? Are you able to spark thoughtful debates, bringing out the inquisitiveness in others? Does the promise of continuously growing excite you? Then get ready to reimagine everything you thought wasn’t possible because that’s what it means to be an IOGer - we don’t set limits, we break them.

• New starter package to buy hardware essentials (headphones, monitor, etc)
• Competitive PTO
• Medical Benefits

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.