Full Stack Developer
Workplace: ÄLTA, Sverige
Expires: August 23, 2025
Direct2Internet (D2I) is a company founded in 1999 specializing in patented IT solutions for fast card transactions. With terminals across the Nordic countries, D2I's services are widely used daily. They have developed an innovative payment switch called 'EgenPSP' that differs from traditional payment switches. Their clients vary from small taxis, restaurants to credit/collection companies and banks. Located just outside Stockholm, D2I is recognized for its excellent credit rating and holds PCI DSS certification since 2011, with authorization from the Swedish Financial Supervisory Authority. The company was awarded the RedHerring Top 100 Europe Award in 2015 as one of Europe's most exciting tech companies. The role involves joining a small company challenging large established players while working innovatively to develop customer value using new technology. The payment industry is fast-changing, affecting how companies manage payment flows nationally and internationally. The company's open culture encourages personal growth through communication, education, and feedback. The developer will communicate clearly and pedagogically with customers and colleagues without technical backgrounds facing technical issues.
Main requirements:
  • Minimum five years experience with Python
  • Experience with C/C++ on Linux platforms
  • Knowledge of Message Queuing systems such as ZeroMQ
  • Experience with mySQL/SQL and MongoDB databases
  • Proficient in Web frameworks and jQuery
  • Experience with RestAPI development
  • Understanding of TCP/IP protocols
  • Familiarity with Git version control
  • Knowledge of ISO8583 standard
  • Experience with security standards and PCI DSS compliance
Responsibilities:
  • Develop and maintain payment solutions and services
  • Work innovatively to improve customer value using new technologies
  • Communicate clearly and accessibly with customers and colleagues without technical backgrounds
  • Collaborate with a dedicated team in an open environment
  • Adapt to a fast-changing payment industry and challenges
Required hard skills:
  • Python
  • C/C++
  • Linux
  • Message Queuing (ZeroMQ)
  • mySQL/SQL
  • MongoDB
  • Web Frameworks
  • TCP/IP
  • Git
  • jQuery
  • RestAPI Development
  • ISO8583
  • Security and PCI DSS compliance
Soft skills:
  • Innovative mindset
  • Good communication skills especially in explaining technical issues to non-technical stakeholders
  • Teamwork and collaboration
  • Adaptability to fast-changing environments
  • Educational and pedagogical skills
Coding languages:
  • Python
  • C++
  • SQL
  • JavaScript (jQuery)
Frameworks:
  • Web frameworks (unspecified)
Operating systems:
  • Linux
Natural languages:
  • Swedish (Proficient)
  • English (Proficient)
Cultural skills:
  • Open and collaborative communication
  • Continuous learning
  • Adaptability