Wholesale Account Executive – Voice & SMS

Job Description

modulus SA is an innovative telecommunications company headquartered in Athens, Greece, delivering next-generation VoIP telephony services to clients across domestic and international markets since 2012. As one of Greece’s leading VoIP providers, modulus enables businesses across industries to transition to modern, cost-effective communication solutions that support remote work and digital agility.

Modulus seeks a detail-oriented and motivated Wholesale Account Executive to join our expanding Voice and SMS wholesale team. You will support the daily operations of our international interconnect business, assist in partner communications, monitor traffic quality, and ensure the smooth execution of wholesale trading and delivery processes. This hands-on role suits individuals with strong organizational skills and a passion for telecom.

Key Responsibilities

Operational Support

• Assist in the execution of Voice and SMS trading operations with global carriers and aggregators
• Support onboarding of new partners: documentation, test traffic coordination, and configuration checks
• Maintain accurate records of rate sheets, agreements, and routing preferences
  
  

Traffic Monitoring & Quality

• Monitor traffic performance metrics (ACD, ASR, PDD, DLR, spam/FAS detection)
• Identify anomalies or quality issues and work with Routing/NOC to resolve them
• Escalate urgent delivery or termination problems in coordination with internal teams
  
  

Coordination & Internal Communication

• Liaise with Routing, Finance, NOC, and Account Managers to ensure smooth service delivery
• Support the Wholesale Manager with administrative tasks, reporting, and partner follow-ups
• Help prepare internal reports on traffic volumes, profitability, and route performance
  
  

Process & Compliance

• Ensure processes comply with partner SLAs and internal quality standards
• Maintain updated internal databases and files for contracts, routes, and contact details
• Assist in dispute resolution and traffic investigations
  
  

Why join us?

We offer a collaborative, growth-oriented environment where your contributions directly impact our success. If you're passionate about making a difference and being part of a team of like-minded individuals, we encourage you to apply today!

Benefits

• Flexible hours and hybrid/remote work opportunities
• A collaborative team environment with modern office amenities
• Private health and medical insurance for you and your family
• Meal vouchers via Up Go for EAT e-card
• Mental health & well-being support through online platforms
• Free public transport pass via OASA
• Competitive salary with career advancement opportunities
  
  

Job requirements

Must have

• Degree in Telecommunications, Computer Science, Business, or related field
• Basic understanding of Voice (SIP) and SMS (SMPP) interconnection principles
• Strong proficiency with Excel and comfort working with structured data
• Attention to detail and ability to work with multiple teams and deadlines
• Fluency in both Greek and English (written and spoken)
  
  

Good to have

• 1 year of experience in telecoms, preferably in wholesale Voice/SMS
• Familiarity with telecom KPIs and tools for traffic analysis
• Experience working with international carriers or messaging aggregators
• Knowledge of a second language is a plus (e.g. Spanish, Arabic, French)