QA engineer (manual) for firmware and embedded systems in London

Ohme is on a mission to accelerate the global transition to clean, affordable energy. We do that by serving as an integrated hardware and software smart-grid platform, focused on the residential EV charging market. The worlds of energy, transport and artificial intelligence are colliding and Ohme is at the heart of this new era. By using technology and data integrations to connect cars, chargers, people, energy providers and more, Ohme has a powerful platform that puts the consumer at the core.

Responsibilities:

• Design, execute and maintain testing across firmware, hardware and software integrations, ensuring products perform reliably in real-world conditions.
• Review technical specifications and convert them into structured, executable test plans, test cases and acceptance criteria that provide comprehensive coverage.
• Refine, challenge and create specifications where requirements are unclear, incomplete or outdated, working closely with engineering teams to establish a shared understanding.
• Leverage existing tooling or develop new test infrastructure to support firmware validation, regression testing and repeatable quality assurance processes.
• Analyse existing firmware projects, identify quality gaps and areas of technical risk, and document clear testing requirements to support future development.
• Develop, maintain and evolve test suites that provide meaningful coverage for Ohme's products, customer journeys and operational requirements.
• Partner with QA engineers, firmware engineers and software engineers to identify high-value testing scenarios, prioritise risks and support successful product releases.

Requirements:

• You care deeply about product reliability and take a systematic approach to identifying issues before they reach customers.
• You enjoy understanding how systems work beneath the surface and can spot gaps in requirements, specifications and test coverage.
• You can balance thorough testing with delivery timelines, focusing effort where it will have the greatest impact on product quality.
• You build effective relationships across engineering teams and communicate findings, risks and recommendations clearly.
• You enjoy investigating complex technical problems and are comfortable working across hardware, firmware and software domains.
• You take ownership of your work, proactively identify improvements and drive solutions with minimal supervision.
• Proven experience testing firmware, embedded software or connected hardware products within a commercial product development environment.
• Strong ability to interpret technical requirements and translate them into structured test plans, test cases and quality documentation.
• Experience creating test specifications, test frameworks or validation tools that improve testing efficiency and coverage.
• Comfortable reviewing existing firmware implementations, identifying quality risks and producing clear, actionable documentation and recommendations.
• Strong understanding of functional, regression and exploratory testing approaches, with the ability to apply the right techniques to complex systems.
• Demonstrable experience designing comprehensive test scenarios that validate both expected behaviour and edge cases.
• Experience using platforms such as TestRail, PractiTest, Xray or similar tools to manage test execution and reporting.
• Strong proficiency with Jira, including defect triage, prioritisation and tracking throughout the development lifecycle.
• Experience working within Agile and Scrum teams, contributing to iterative development and release processes.
• Excellent written and verbal communication skills, with the ability to explain technical risks, defects and recommendations to both technical and non-technical audiences.

Desirable:

• Experience working with AWS services such as DynamoDB, CodePipeline and CodeBuild, or equivalent cloud-native platforms.
• Experience with, or enthusiasm for, AI-driven testing tools and approaches that improve test quality, coverage or efficiency.
• Familiarity with Python for automation, tooling or firmware validation frameworks.
• A genuine interest in electric vehicles, energy technology or the transition to a more sustainable future.

Conditions:

• This role is a fixed-term contract, with the potential to move into a permanent position.
• You’ll get to work in a fast-paced and rapidly growing scale-up with global ambitions that is cutting edge, passionate about sustainability and seeks to make the world a better place.
• Competitive salary and bonus.
• London Office - 3 days a week in the office.
• Private Health Insurance.
• Pension Scheme.
• Life Assurance Scheme with death in service benefit of 4x salary.
• Income Protection Scheme for long term illness.
• Ride to Work Scheme.
• Payroll Giving Scheme.
• Season Ticket Loan to spread cost of travel over 12 months.
• Eye Test every 2 years.