Junior QA Engineer - Computer Vision (Portugal-based)

Sword Health is on a mission to free two billion people from pain. 
With 67% of members achieving a pain-free life and a 70% reduction in surgery intent, at Sword, we are using AI Care to change lives, and save millions for our 25,000+ enterprise clients across three continents. Today, we hold the majority of industry patents, win 70% of competitive evaluations, and have raised more than $300 million from top venture firms like Founders Fund, Sapphire Ventures, General Catalyst, and Khosla Ventures.
Recognized as a Forbes Best Startup Employer in 2025, this award highlights our focus on being a destination for the best and brightest  talent. Not only have we experienced unprecedented growth since our market debut in 2020,  but we’ve also created a remarkable mission and value-driven environment that is loved by our growing team. With a recent valuation of $3 billion, we are in a phase of hyper growth and expansion, and we’re looking for individuals with passion, commitment, and energy to help us scale our global impact. 
Joining Sword means committing to a set of core values, chief amongst them to “do it for the patients” every day, and to always “deliver more than expected” on behalf of our members and clients.
This is an opportunity for you to make a significant difference on a massive scale as you work alongside 900+ (and growing!) talented colleagues, spanning three continents. Your charge? To help us build a pain-free world, powered by AI, enhanced by people — accessible to all.

Algorithms Team:Our Algorithms team is a versatile Software Engineering team. They build production-ready software for complex problems that require technical and innovative solutions. The team combines:- Software engineering ability;- Technical expertise in fields such as Computer Vision, Signal Processing and Sensor Fusion, Kinematics, Control, Data Science, etc;- Product and clinical awareness.
The largest example of their work is the motion tracking and motion analysis that enables our AI Care Specialist to guide our members during their exercise sessions: - Providing real-time feedback;- Collecting valuable movement metrics.

What you’ll be doing:

• Develop, implement and maintain quality assurance processes and procedures for our Computer Vision Team;
• Conduct data acquisition and data annotation efforts;
• Validate CV developments by creating/running scripts and/or conducting technical experiments defined together with the team;
• Collaborate with product teams (including other QAs) to ensure quality of features that integrate Computer Vision components;
• Be an active participant in all parts of the software development process, cross-functionally, making sure testing “shifts left” and that there is proper tracking of success post-launch;
• Proactively and clearly report status and quality risks to stakeholders.

What you need to have:

• A strong Engineering background, including working knowledge of both scripting and Machine Learning;
• Solid knowledge of software testing and of the software development lifecycle;
• Excellent oral and written communication skills (Portuguese and English);
• Comfort with version control and task management software;
• Ability to interpret and analyze data of different types;
• Proactive attitude, flexibility, critical thinking.

To ensure you feel good solving a big Human problem, we offer:

• A stimulating, fast-paced environment with lots of room for creativity and ownership;
• Career development and growth, with a competitive salary;
• The opportunity to work with a talented team on cutting-edge AI/ML applications that have the potential to transform the future of healthcare;
• A flexible environment where you can control your hours (remotely) with unlimited vacation;
• Access to our health and well-being program (digital therapist sessions);
• Remote or Hybrid work policy.

Portugal - Sword Benefits & Perks:
• Health, dental and vision insurance• Meal allowance• Equity shares• Remote work allowance• Flexible working hours• Work from home• Discretionary vacation• Snacks and beverages• English class

Note: Please note that this position does not offer relocation assistance. Candidates must possess a valid EU visa and be based in Portugal.

Sword Health, which includes SWORD Health, Inc. and Sword Health Professionals (consisting of Sword Health Care Providers, P.A., SWORD Health Care Providers of NJ, P.C., SWORD Health Care Physical Therapy Providers of CA, P.C.*) complies with applicable Federal and State civil rights laws and does not discriminate on the basis of Age, Ancestry, Color, Citizenship, Gender, Gender expression, Gender identity, Gender information, Marital status, Medical condition, National origin, Physical or mental disability, Pregnancy, Race, Religion, Caste, Sexual orientation, and Veteran status.