Wholesale SMS Account Specialist

modulus SA is an innovative telecommunications company based in Athens, Greece. Since 2012, we’ve been delivering next-generation VoIP telephony services to clients across both domestic and international markets. Today, we are one of Greece’s leading VoIP providers, helping businesses across industries embrace modern, flexible, and cost-effective communication solutions that enable digital agility and remote work.

As part of our continued growth, we are expanding our Voice and SMS wholesale team and seeking a detail-oriented and driven Wholesale SMS Account Specialist. If you thrive in a fast-paced environment, excel at building relationships, and have a passion for telecommunications, we’d love to meet you.

Role Overview
As a Wholesale SMS Account Specialist, you will play a pivotal role in driving the growth of modulus’ international SMS wholesale business. You will manage a portfolio of strategic accounts and develop long-term partnerships with carriers, aggregators, CPaaS providers, and OTT platforms. You will be responsible for the commercial success, operational health, and overall customer satisfaction of your accounts.

This is a hands-on position suited to individuals with excellent organizational skills, a commercial mindset, and a strong understanding of the A2P SMS market.

Key Responsibilities

• Manage and expand a portfolio of key wholesale SMS accounts (both buy and sell side)

• Identify and develop new business opportunities with international carriers and aggregators

• Optimize routing and pricing strategies to maximize profitability while maintaining service quality

• Conduct regular business reviews and in-depth performance analyses with key partners

• Negotiate commercial terms, contracts, and volume commitments

• Collaborate cross-functionally with internal teams (technical, legal, billing, finance) to ensure seamless service delivery and successful partner onboarding

• Monitor and analyze SMS traffic quality and proactively resolve issues

• Represent modulus at major industry events and conferences (e.g., Capacity, GCCM) to strengthen our global network and brand presence

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

Must have

• Degree in Telecommunications, Computer Science, Business, or related field

• Experience in SMS wholesale or A2P SMS business development/account management

• Substantial commercial and negotiation skills

• Excellent interpersonal and communication abilities, with a collaborative mindset

• Highly organized with a strong attention to detail

• Ability to thrive in a fast-moving, competitive international environment

• Willingness to travel internationally to attend key industry events

• 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 aggregators

• Knowledge of an extra language is a plus (e.g. Spanish, Arabic, French)