Application Developer

IKNOWHOW SA

. Develop, unit and ST test API services, orchestration flows and integration adapters .

Posted 10/23/2026full-timeNea Ionia • GreeceMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in REST API service development and testing, backend development using Java, Python, or Node.js, and CI/CD pipeline development with tools like Jenkins or GitLab CI. Proficient in data transformation, automated testing, and integration platform development, with strong communication and collaboration skills.

Highest-signal resume keywords

REST API Service DevelopmentBackend Development (Java, Python, Node.js)CI/CD Pipeline Development (Jenkins, GitLab CI)Data Transformation & Payload Handling (JSON, XML)Integration Platform Development

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

REST API DevelopmentBackend DevelopmentData TransformationUnit TestingAutomated Test ScriptingIntegration Platform DevelopmentPerformance Testing (JMeter, Gatling)API Gateway Integration PatternsDocker BasicsVersion Control (Git)

Soft Skills

Verbal CommunicationWritten CommunicationCollaborative SpiritSense of OwnershipAccountability

Tools & Technologies

JenkinsGitLab CIDockerJMeterGatlingAPM Tools

Industry Keywords

Banking ProductsIntegration DefectsSITUATHypercareDevSecOpsCore Banking System Integrations

Tech Stack

Tools & technologies

DockerJavaJavaScriptJenkinsJMeterNode.jsPython

About the role

Key responsibilities & impact

Develop, unit and ST test API services, orchestration flows and integration adapters
Implement data-transformation templates and API payload handlers
Contribute to CI/CD pipeline development and automated deployment scripts
Support environment provisioning and developer onboarding
Execute SIT and performance test automation scripts
Resolve integration defects during SIT, NFRT, UAT and Hypercare phases
Provide warranty-period on-call support and incident resolution for integration issues
Work on full-lifecycle development and maintenance of Banking Products in outsourced, ongoing and upcoming projects

Requirements

What you’ll need

Bachelor’s degree in Information Technology, Computer Science, Computer Engineering or any related field
3+ years software / application development experience
REST API service development & testing
Backend development (Java, Python or Node.js)
Data transformation & payload handling (JSON / XML)
Unit testing & automated test scripting
Integration platform / middleware development
CI/CD pipeline development (Jenkins, GitLab CI or similar)
Docker / containerization basics and Git (version control, branching strategies)
API Gateway integration patterns and Performance / load test scripting (JMeter, Gatling or similar)
Observability tooling (logging, APM basics)
Proficient verbal and written communication skills in English
Strong collaborative spirit, sense of ownership, and accountability
Completion of military obligations if applicable
Nice to have: Experience in core banking system integrations
Nice to have: DevSecOps / security-in-pipeline awareness

Benefits

Comp & perks

An attractive salary package
Private health insurance plan
Career development and growth opportunities
Continuous training via personalized seminars
An amazing private & open-office workspace in Athens
Stable and enjoyable working environment