Application Engineer II
- Level
- Mid
Not stated in the posting: salary, work type, visa.
Open. First seen 2 October 2026.
About the role
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 from 8 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.
What this role asks for
Standard for software engineering roles
Python
Common in software engineering postings at any company.
Compared with Mollie's other open jobs.
The team: Application HIRES STEADILY
This role is one of 9 open in Application. 1 was posted in the last 30 days and the oldest in August: a team that hires all year rather than one being built.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
PHP (5 of 9), C# (3 of 9), Golang (3 of 9), Java (3 of 9), Python (3 of 9), React (3 of 9), React Native (3 of 9)
OTHER ROLES ON THIS TEAM
- Senior Engineering Manager posted Oct 2
- Full Stack Engineer II posted Aug 3
- Engineering Manager posted Jul 29
- UI Engineer II posted Jul 7
- Engineering Manager - AppCore posted Jun 19
- Senior Application Engineer posted Jun 15
- Application Engineer II posted Jun 8
- Engineering Manager posted May 22
From the team and dates on Mollie's own job board.
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