JMJoão Martins
@jhmartins0x
ISTQB Certified QA Automation Engineer with expertise in backend testing.
PortugalWhat I'm looking for
I am a dedicated QA Automation Engineer with a strong background in electronic and telecommunications engineering. My journey began with a Master's degree from the University of Aveiro, where I developed a keen interest in testing methodologies and quality assurance processes. I hold multiple ISTQB certifications, including Test Automation Engineer and Agile Tester, which have equipped me with the skills necessary to excel in various testing environments.
Currently, I work remotely as a QA Engineer at Zumo, where I focus on backend testing of crypto transaction flows and core API services. My experience includes designing test cases, automating end-to-end testing using TypeScript and Jest, and defining QA processes from scratch. Prior to this, I contributed to the development of a media platform at Talkdesk, where I honed my skills in frontend automated testing using Selenium and Cypress, as well as manual API testing with Postman.
Throughout my career, I have been committed to improving quality practices across the development lifecycle. I thrive in collaborative environments and am passionate about leveraging my technical expertise to ensure the delivery of high-quality software products.
Experience
Work history, roles, and key accomplishments
QA Engineer
Zumo Financial Services Limited
Feb 2024 - Present (1 year 3 months)
Currently working with the team responsible for building and maintaining Zumo’s core systems. Primarily focused on backend testing of crypto transaction flows including internal and on-chain transactions for Ethereum and Bitcoin. Also responsible for testing core API services designed for use across clients including Zumo’s in-house mobile app.
QA Automation Engineer
Talkdesk
Jan 2021 - Present (4 years 4 months)
Contributed to the Communication Platform Team in building an in-house media platform capable of establishing voice call connections. Later, joined the Unified Communications Team to help develop a user-friendly platform to purchase, port, and manage numbers.
Software System Test Engineer
WithUs | Critical Software
Aug 2020 - Present (4 years 9 months)
Contributed to a railway software project focused on testing Train Control and Management Systems (TCMS). Analyzed TCMS requirements and designed test cases using the GIVEN-WHEN-THEN (GWT) format.
Software Verification & Validation Engineer
WithUs | Critical Software
Jul 2019 - Present (5 years 10 months)
Contributed to the Design and Assurance Level (DAL) of aerospace embedded software projects, ensuring compliance with the DO-178C standard. Reviewed and specified low-level requirements and conducted source code reviews in C.
Education
Degrees, certifications, and relevant coursework
University of Aveiro
Integrated Masters in Electronic and Telecommunications Engineering, Electronic and Telecommunications Engineering
Activities and societies: Thesis: Vector Modulator for Beamforming control architectures in the Ka band. Publications: Joao Martins, Tiago Varum and Jo˜ ao N. Matos (2019). “Printed Vector Modulator for 5G Communications Systems”, 18th edition of the SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC). DOI: 10.1109/IMOC43827.2019.9317603
Developed a compact, low-cost planar vector modulator for beamforming applications such as 5G systems. Analyzed and designed analog components for adaptive antenna networks, including phase-shifters and vector modulators. Developed passive and active devices using microstrip technology for millimeter-wave frequencies, including power dividers and reflection-type attenuators. Designed and simulated
Tech stack
Software and tools used professionally
Availability
Location
PortugalAuthorized to work in
Job categories
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