Backend Developer

ilionx

. Building mobile APIs . Developing micro services to evolve our architecture . Perfecting systems for risk management, fraud detection, and payment processing . Focusing mostly on greenfield development and improvement

Posted 9/15/2026full-timeAmsterdam • NetherlandsMid-LevelSenior💰 €5,500 - €100,000 per monthWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building mobile APIs and developing microservices with a focus on risk management, fraud detection, and payment processing. Proficient in Java and experienced in back-end development, emphasizing maintainability and fast turnaround through TDD, DDD, and Continuous Integration & Delivery.

Highest-signal resume keywords

Java FluencyBack-End DevelopmentMicroservices ArchitectureTest-Driven Development (TDD)Continuous Integration & Delivery

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

JavaMicroservicesRisk Management SystemsFraud Detection SystemsPayment ProcessingTest-Driven Development (TDD)Domain-Driven Design (DDD)Continuous IntegrationContinuous DeliveryKotlin

Soft Skills

Quick LearnerAmbitious AttitudeResults-Driven PersonalityTeam CollaborationExcellent Communication SkillsOrganisational Skills

Certifications & Qualifications

Bachelor's Degree in Computer ScienceBachelor's Degree in MathsBachelor's Degree in Physics

Industry Keywords

FinanceStart-Up EnvironmentScale-Up EnvironmentProduct-Focused Environment

Tech Stack

Tools & technologies

JavaKotlinScala

About the role

Key responsibilities & impact

Building mobile APIs
Developing micro services to evolve our architecture
Perfecting systems for risk management, fraud detection, and payment processing
Focusing mostly on greenfield development and improvement of existing systems
Working with a minimalist approach to external frameworks
Emphasizing maintainability and fast turnaround with TDD, DDD, and Continuous Integration & Delivery

Requirements

What you’ll need

Fluency with Java
6+ years of experience in back-end development
A bachelor's degree in Computer Science, Maths, Physics, or similar
To be a quick learner with an ambitious attitude and results-driven personality
The ability to work well as part of a team in a fast-paced environment
Excellent communication and organisational skills
Fluency in English
Experience with Kotlin and Scala (nice to have)
Experience within Finance (nice to have)
Experience in a start-up or scale-up (nice to have)
Experience in a product-focused environment (nice to have)

Benefits

Comp & perks

Financial benefits that show we value your work
Medical insurance for you and your close ones
Flexibility to work from home, the office or abroad
Exciting events year-round so you can get to know your team
Werk hybride, thuis of op kantoor
Ruimte om jezelf te ontwikkelen
Goede pensioensregeling
Aantrekkelijke bonusregeling
Goede arbeidsvoorwaarden
Thuiswerkvergoeding