Staff Backend Software Engineer | Billing Team

At Wellhub (formerly Gympass) (Permanent), in Lisbon, Portugal

Salary : €70.000 - €86.000

Expires at : 2025-12-09

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 relevant technologies
• Software Architecture knowledge
• Software quality and test automation mindset
• Cloud computing (AWS) and Cloud Native (K8s) experience
• Experience with SQL technology such as PostgreSQL, 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
• Prior experience as a backend engineer and advanced English skills are mandatory. We encourage applicants who may not meet all criteria to apply, as we value potential and motivation.

Benefits & Perks

We're a wellness company committed to employee health and well-being. Our benefits include :

• WELLHUB : Access digital fitness programs, online wellness resources for meditation, nutrition, mental health support, and more. The Gold plan is free, with discounts on other plans.
• FITNESS : Additional subsidy for onsite gyms and fitness studios.
• FLEXIBLE WORK : Options for hybrid or full remote work, with a home office stipend and flexible work allowances.
• FLEXIBLE SCHEDULE : Adjust working hours based on personal needs and time zones.
• PAID TIME OFF : Minimum 25 days per year, plus additional days based on tenure, including your birthday.
• PARENTAL LEAVE : 100% paid parental leave for new parents and extended maternity leave.
• CAREER GROWTH : Opportunities for personal and professional development.
• CULTURE : A supportive, high-growth environment with global colleagues and a value-based culture of trust, flexibility, and integrity.