Processing Development Engineer

CyprusSerbiaRelocationHybridMiddleSenior

Belgrade or Limassol.

We are seeking a talented and proactive Processing Development Engineer to join our team within the payment industry. The successful candidate will play a crucial role in maintaining the smooth operation of our Processing Platform (SmartVista) and providing expert technical development of our card products. If you have a solid background in payment processing, technical troubleshooting, we encourage you to apply.

Responsibilities:

  • Technical implementation of the company's new projects in terms of card processing

  • Selection, planning, and coordination of architectural solutions, technology stack

  • Setting up and installing authorization system releases

  • Passing certification tests, audits of payment networks

  • Study of specifications, norms, and rules of payment networks.

  • Lead the resolution of client problems alongside team members.

  • Actively participate in customer go-live activities and pilot phases.

  • Preparation of technical requirements for system upgrades

  • Setting up emulators of payment systems 

Requirements:

Core Payment Expertise

  • 3+ years of experience in card processing systems, with solid understanding of the full payment lifecycle (authorization, clearing, settlement)

  • Experience with card processing platforms (BPC SmartVista is a strong advantage)

  • Strong knowledge of payment industry standards and protocols (ISO8583, SOAP, REST APIs)

  • Familiarity with modern payment technologies such as EMV 3-D Secure, recurring payments, Apple Pay, Google Pay, VTS, AVS

Card Schemes & Certification

  • Hands-on experience working with Card Schemes (Visa, Mastercard, etc.)

  • Strong understanding of scheme rules, documentation, and compliance requirements

  • Experience in card product certification and working with tools such as Visa Edit Package, MasterCard File Express, and scheme emulators

Technical Skills

  • Practical experience with SQL/PLSQL, Bash, Postman, and Python

  • Proficient in using banking applications, Oracle DB, WebLogic, and Bash scripting.

  • Ability to troubleshoot, analyze, and resolve issues in high-load payment environments

  • Experience with system integrations and API-based architectures

Infrastructure & Systems Knowledge

  • Understanding of payment system architecture (frontend, back-office)

  • Experience with system releases, updates, and production support with minimal downtime

  • Familiarity with card technologies such as EMV, PayWave, magnetic stripe cards, HSM and OBKM

 

Additional Skills

  • Experience in fraud/risk-related processes and transaction monitoring is a plus

  • Ability to work in cross-functional teams and communicate with technical and business stakeholders

  • Strong analytical thinking and attention to detail

Will consider as a plus:

  • Strong understanding of the regulatory framework and operational rules of major payment systems and European regulators, including PCI DSS, PSD2, ATNGE, Liability Shift, etc.

  • Skilled in maintaining technical documentation and producing structured, clear system documentation.

  • Experience in planning and reporting activities related to payment processing.

  • Background in budgeting for payment infrastructure and project needs.

  • Hands-on experience with international and local payment systems: JCB, Discover (DCI), American Express (AmEx)

  • In-depth knowledge of clearing and settlement exchanges with card schemes, including MasterCard File Express, Edit Package, and related tools

We offer:

  • Attractive monthly salary paid in line with experience

  • Vacation, sick, and paid holidays

  • Flexible working hours

  • Full-time: 5/2

  • Modern workplace with all necessary equipment

  • A team of top international professionals to learn from

  • Multicultural working environment

Published on: 5/7/2026

Unlimit

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Unlimit is a cross-border payments company that works with e-commerce merchants, offering payment gateway services and acquiring for online stores, high-risk businesses and an on&off-ramp fiat solution for crypto, DeFi, and GameFi.

We operate both locally and internationally with ease across Europe, the UK, LATAM, APAC, India, and Africa.

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