Senior Fullstack Engineer - New Initiative (Portugal-based Remote/Hybrid)

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.

At Sword Health, we are reimagining healthcare by combining cutting-edge AI/ML technology with personalized care. Our goal is to deliver world-class clinical support at unprecedented scale—ensuring every patient’s journey is as individualized and effective as possible.
As a Senior Fullstack Engineer, you will play a pivotal role in building and scaling our intelligent health products. Working at the intersection of backend, frontend, and AI systems, you’ll be transforming internal innovations into production-ready software that delivers measurable impact to our users.
If you’re an experienced engineer who thrives in both backend and frontend environments—and are excited by the potential of AI in healthcare—this is the opportunity you’ve been waiting for.

What you’ll be doing:

• Design, build, and maintain scalable, high-performance web applications using Python, Node.js, and modern frontend frameworks (React or Vue.js);
• Create robust production systems that power core features and clinical decision support tools;
• Implement and optimize APIs, data pipelines, and backend services integrated with our AI/ML workflows;
• Collaborate closely with AI, Product, Data, and Engineering teams to define and deliver high-impact features that elevate the user experience;
• Architect efficient systems for deploying machine learning models at scale;
• Write clean, maintainable, and well-tested code following modern development practices;
• Conduct code reviews, mentor junior engineers, and contribute to a high-performance engineering culture;
• Troubleshoot, debug, and resolve production issues across the full stack;
• Advocate for engineering excellence and help evolve our tech stack, tooling, and processes.

What you need to have:

• 5+ years of professional experience as a Fullstack Engineer;
• Proficiency in Python (our primary backend language) or Node.js, with deep understanding of their ecosystems;
• Hands-on experience with React or Vue.js in production;
• Solid understanding of RESTful API design and distributed systems;
• Experience working with both relational (e.g., PostgreSQL, MySQL) and NoSQL (e.g., MongoDB, Redis) databases;
• Familiarity with containerized environments using Docker;
• Exposure to cloud platforms such as GCP (preferred), AWS, or Azure;
• Strong problem-solving skills, autonomy, and an ability to break down complex technical challenges;
• Comfortable working in fast-paced, agile environments and collaborating across disciplines.

What we would love to see:

• Strong UI/UX design sensibility and ability to translate product requirements into intuitive user experiences;
• Experience in healthcare or health-tech environments;
• Background integrating AI/ML models into production applications;
• Proficiency in FastAPI, Django, or Flask for building backend services;
• Familiarity with event-driven architectures (e.g., GCP Pub/Sub, Kafka, RabbitMQ);
• Knowledge of testing frameworks like PyTest, Jest, or Mocha, and CI/CD practices;
• Contributions to open-source or personal GitHub repositories;
• A passion for building software that helps real people live healthier lives.

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.