Mollie

Senior Application Engineer

Mollie
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2 days ago
Amsterdam, NetherlandsSenior

Responsibilities

  • Design and engineer large-scale systems capable of handling high volumes of financial transactions.
  • Develop, test, measure, and iterate customer-facing product features from idea through delivery.
  • Lead technical initiatives and architectural decisions from design through implementation.
  • Mentor junior developers through guidance, knowledge sharing, and hands-on collaboration.
  • Resolve complex technical and business problems using creative and analytical approaches.
  • Create documentation and improve processes to support domain knowledge sharing.
  • Own code quality, engineering excellence, and best practices across systems.

Requirements

  • At least 6 years of experience developing large-scale applications.
  • Experience with PHP or Java is preferred, with willingness to work with PHP or Java; experience with Go, C#, or Python is also valued.
  • Proven experience leading architectural decisions and technical initiatives and delivering end-to-end solutions.
  • Experience mentoring junior developers and implementing strategies to support team growth and skill development.
  • Excellent communication skills and the ability to explain complex problems and solutions clearly to stakeholders.
  • Creative problem-solving skills, a product-first approach, and the ability to analyze and resolve complex issues.
  • Ability to take accountability for tasks and proactively identify improvements in technical or business areas.
  • A mindset focused on consistently delivering customer value while balancing speed and quality.

Tech Stack

Categories

Mollie

About Mollie

1,001-5,000 employees

Mollie builds a payments and money management platform for businesses across Europe, covering online and in-person acceptance, reconciliation, reporting, fraud prevention, and financing. It supports methods such as iDEAL, SEPA credit and direct debit, Visa, Mastercard, PayPal, Bancontact, and SOFORT, and serves more than 250,000 merchants. Founded in 2004 and headquartered in Amsterdam, it is a privately held company with products like POS terminals and Mollie Capital.

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