Senior Back End Developer

Location: Tel Aviv

Start Date: As soon as possible

Reports to: Chief Technology Officer

About Klearly

Klearly is one of the fastest-growing fintech companies in the Netherlands. Since its founding, Klearly has raised €20 million, with backing from major industry players such as PayPal Ventures, the former President of Mastercard, the former COO of Adyen, and the former CEO of Mollie, as well as investors including Global PayTech Ventures, Antler, and Shapers.

Our mission is to revolutionize in-person (card-present) payments. We focus on building a payment product that businesses love and that SaaS providers embrace as a core part of their offering.

Our goal? To become the future of in-person payments. We are building a modern payment product that excites businesses such as bars, restaurants, and cafés—and that SaaS providers integrate as an essential component of their solutions.

We strongly believe in the power of collaboration and are looking for an experienced and highly skilled Senior Backend Developer to help shape the future of payments with us.

About the Role

As a Senior Backend Developer at Klearly, you will take a leading role in developing and optimizing our payment infrastructure to ensure it is scalable, secure, and reliable. You will build and maintain backend systems that enable seamless integrations with payment partners and acquirers, and work closely with cross-functional teams to deliver high-impact features that drive the business forward.

This role requires deep expertise in backend technologies, payment standards, and strong problem-solving skills. You will have the opportunity to shape the core technology powering Klearly’s innovative fintech solutions.

Responsibilities

• Lead the development and optimization of our backend payment infrastructure, ensuring scalability, reliability, and security

• Build and maintain systems that support seamless integrations with payment acquirers and partners

• Collaborate with cross-functional teams to deliver impactful features aligned with business goals

• Ensure high performance, low latency, and fault tolerance across all backend systems

Requirements

• At least 6 years of experience in backend development, with a strong background in payments

• Expertise in Node.js and AWS services such as Lambda, API Gateway, Step Functions, and VPC

• Experience with both SQL and NoSQL databases, such as PostgreSQL and MongoDB

• Familiarity with payment industry standards and technologies, including PCI-DSS compliance, BIN routing, transaction ledgers, and SoftPOS (strong plus)

• Strong problem-solving skills, attention to detail, and ability to work independently

• Excellent communication and collaboration skills with a team-oriented mindset

What We Offer

• Be part of the core tech team and influence key product and technology decisions

• Work on cutting-edge fintech solutions with global ambitions

• Grow within a collaborative and dynamic startup environment

• Hybrid working model that supports flexibility and work-life balance

• Prime location in Tel Aviv, with the option to relocate to Amsterdam after proven performance

Join Klearly as a Senior Backend Developer and help build the future of payments. Ready to make an impact?

Apply today by sending your CV and motivation letter to careers@klearly.eu.