G4S Telematix is a member of the Global G4S & Allied Universal Group - the world’s leading integrated security company, with more than 20 years of experience in providing Monitoring & Response services to Secure Your Mobility.
Our solutions combine advanced tracking and sensing technology with a state-of-the-art software platform and our 24/7 Secure Operations Center to provide monitoring, management and response services for the Logistics, Automotive and People Safety sectors.
L3 Application Support Engineer
Reporting to: Head of Technology
Location: Metamorfosis, Athens
We are seeking a skilled and motivated L3 Application Support Engineer to join our Technology team. In this role, you will be responsible for developing and supporting internal and client-facing software applications, ensuring the design, quality and reliability of our solutions through rigorous QA, testing, and assessment procedures.
Key Responsibilities & Accountabilities
● Serve as the primary Technical Subject Matter Expert (SME) of IoT Application Solutions contributing to solution design and offering
● Assume end-to-end accountability for software service requests. Execute root-cause analysis and implement direct, code-level resolutions to system issues.
● Handle L2 and L3 software support requests and coordinate with vendors to resolve issues efficiently
● Orchestrate and facilitate User Operational Testing (UOT) phases in collaboration with key stakeholders to validate system integrity, performance, and operational readiness prior to production release
● Author and systematically maintain rigorous technical documentation, encompassing system architectures, API endpoint specifications, and operational workflows for all newly developed and modified solutions
Main Requirements
● Bachelor’ s degree in Software Engineering, Computer Science, or a closely related field.
● 3+ years of experience in a software engineering, application support, or DevOps role
● Proven hands-on programming experience with .NET (C#) and a strong understanding of relational databases. Experience with RESTful APIs and version control (e.g., Git) is highly preferred
● Knowledge and experience of workflow-based systems (e.g. Zoho) will be considered an advantage
● Strong analytical and problem-solving skills, with the ability to troubleshoot complex technical issues effectively
● Excellent communication and interpersonal skills to effectively collaborate with cross-functional teams and provide top-notch customer support
● Enthusiasm for staying updated with the latest industry developments and eagerness to bring innovative solutions to the organization
● Proficiency in English
We Offer
Competitive remuneration package
Private health and life insurance
Mobile phone and Laptop
Career development opportunities
A collaborative and modern work environment
G4S is committed to Equal Employment Opportunities! If you correspond to the above criteria please don’t hesitate to click the Apply button and send us your resume.
Skills Required
- Bachelor's degree in Software Engineering, Computer Science, or a closely related field
- 3+ years of experience in software engineering, application support, or DevOps
- Hands-on programming experience with .NET (C#)
- Strong understanding of relational databases
- Experience with RESTful APIs
- Experience with version control (e.g., Git)
- Knowledge/experience of workflow-based systems (e.g., Zoho)
- Strong analytical, troubleshooting, and communication skills; proficiency in English
What We Do
G4S is the world’s leading global, integrated security company, specialising in the provision of security services and solutions to customers. Our mission is to create material, sustainable value for our customers and shareholders by being the supply partner of choice in all our markets. G4S is active in around 85 countries and has around 533,000 employees. For more information on G4S, visit www.g4s.com.
