Application Engineer II
Confirmed on the employer's own hiring board on Oct 16, 2026. First seen by Alion on Aug 4, 2025. Mollie scores A on the Alion truth index.
Your opportunity
At Mollie, we’re on a mission to make payments and money management effortless for every business in Europe.
We started 20 years ago when we launched a more direct, affordable way for companies to get paid. That provided an alternative to the frustrating, overpriced solutions that banks offered at the time.
Today, we serve more than 250,000 businesses across Europe with an all-in-one solution that simplifies payments and money management. And we’re a 850-strong team of product, finance, support, commerce, and engineering specialists working across Europe - from Lisbon to London.
Our Lisbon hub:
Situated in the heart of Lisbon at Marques de Pombal, our team of 50+ engineers from8 different nationalities, are all contributing to Mollie’s mission of delivering an outstanding Merchant Experience through our web and mobile app at the same time that we are scaling and enhancing our Payment Processing and Orchestration Platform This enables the launch of innovative Payments and Financial Products.
We take pride in our diverse, English-speaking culture that brings open minds to collaborate and solve financial challenges for our customers.
What you will be doing:
Building Large-Scale Systems: Help us design and engineer systems that can scale to manage high volumes of transactions efficiently and effectively.
API and Service Development: Design, build, and maintain APIs, services, and systems across Mollie’s engineering teams.
Autonomy and Ownership: Lead technical initiatives from architecture design to implementation, ensuring engineering excellence throughout the process.
Problem-Solving: Utilize your creative problem-solving skills and analytical abilities to resolve complex issues and contribute to our mission of making financial processes effortless.
What you will bring:
Always Be Shipping mindset: It’s about consistently delivering value to customers, where speed and quality go hand in hand.
5+ years of experience in developing large-scale applications, preferably with PHP or Java. Experience with Go, C#, or Python is also valued but you are willing to work with PHP or Java.
Experience in designing systems and handling queuing, caching, concurrency, fault tolerance and scalability.
Excellent communication skills, with experience working effectively with various stakeholders. Creative problem-solving skills and the ability to shape ideas with a product-first approach, as well as analyse and resolve complex issues.
Kindly note that relocation support is not offered for this role.