Backend Software Engineer | Billing Team

Position: Staff Backend Software Engineer | Billing Team
Location: Via Milano

At Wellhub (Permanent), in Lisbon, Portugal
Salary : €70.000 - €86.000
Expires at :
Remote policy :
Full remote
We are looking for a Backend Software Engineer Specialist to join our Billing team in Portugal!
Our platform supports the entire Wellhub business and handles millions of transactions for users and companies around the world. We work closely with cross-functional teams and payment service providers to ensure optimal checkout conversion rates and efficient account management.
To maintain consistency across multiple areas and services, we are currently developing a new architecture and set of systems.
YOUR IMPACT

You will research and execute strategic projects along with your team. Your deliverables influence B2B and B2C checkout conversion around the globe, by both creating new integrations for different tax authorities and improving / maintaining existing ones.
Together with the technical leadership, you will implement and deliver solutions working with a cross-functional team.
You will have the opportunity to develop leadership skills, working closely with senior engineers and helping them speed up their learning curve. You will also have opportunities to develop engineering skills by getting involved in scalability problems, system architecture, and code quality assurance, among others.
You will participate in the development of some of the most critical and challenging services in our ecosystem, seeking to build long-term and sustainable solutions.
You will design, develop, test, deploy, maintain, and improve services focusing on performance, scalability, and resilience;
You will build integration with 3rd‑party API and tools;
You will work in a collaborative and agile environment that prioritizes people over process.
Also, you will work with cutting‑edge technologies and edge cases on a global scale.
Live the mission : inspire and empower others by genuinely caring for your own wellbeing and your colleagues. Bring wellbeing to the forefront of work, and create a supportive environment where everyone feels comfortable taking care of themselves, taking time off, and finding work‑life balance.

Main requirements
WHO YOU ARE

Focus on making things right and better at every opportunity.
Solid experience with RESTful APIs written in :
Software Architecture knowledge.
Software quality and test automation mindset.
Cloud computing (AWS) and Cloud Native (K8s) experience.

Experience with SQL technology such as Postgre

SQL, MySQL, Oracle, SQL Server or any other relational database.

Experience with microservices and high‑volume distributed systems.
Bachelor’s degree in computer science or equivalent professional experience.

We recognize that individuals approach job applications differently. We strongly encourage all aspiring applicants to go for it, even if they don't match the job description 100%. We welcome your application and will be delighted to explore if you could be a great fit for our team. For this specific role, please note that prior experience as a backend engineer, advanced English skills are mandatory requirements.
Benefits & Perks
We're a wellness company that is committed to the health and well‑being of our employees. Our benefits include :

WELLHUB – We believe in our mission and encourage our employees and their families to take care of their wellbeing too. Access digital fitness programs, and online wellness resources for meditation, nutrition, mental health support, and more. You will receive the Gold plan at no cost, and other premium plans will be significantly discounted.
FITNESS – Additional fitness subsidy to access onsite gyms and fitness studios.
FLEXIBLE WORK – At Wellhub, flexibility fosters a happier, healthier, and more productive work environment for everyone. As a Flexible First company, we offer two work model options: flexible hybrid and full remote, and make the office a place for collaboration, community, and team building. The model for this role can be discussed with your recruiter and hiring manager. We offer all employees a home office stipend and a monthly flexible work allowance to help cover the costs of working from home.
Our offices are in Germany, Italy, Netherlands,…