Office Admin & Accounting (internship)

We are looking for an ambitious and detail-oriented Office Admin & Accounting trainee to provide support to the financial department by managing daily accounting tasks and support administrative operations tasks, as well.

This dual-role opportunity is ideal for someone who wants to gain practical experience in two critical business functions: office administration and financial recordkeeping. You will assist in daily administrative tasks and help maintain accurate financial records under the guidance of our finance and admin teams.

Join Our Team as an Intern at Threenitas S.A.

Threenitas S.A. is a dynamic software engineering company based in Athens. We work directly with our clients to analyse, design, and implement cutting-edge digital products and solutions. If you’re passionate about technology, eager to learn, and excited to make an impact, we’d love for you to join us!

What We Do

At Threenitas, we love technology, gadgets, and services—and we take joy in using them to create solutions that meet our clients’ goals. With our deep knowledge of digital media and engineering expertise, we bring our clients' visions to life while providing practical, real-world solutions. Our goal is to create projects that deliver exceptional digital experiences to users.

The Threenitas Environment

We’re a team of professionals who are passionate about technology and continuously exploring new ways that technology can be used to support our clients' needs. If you're curious about how digital products and services can improve everyday lives and want to be part of an innovative and agile team that focuses on building new stuff, you’ll feel right at home with us.

Why Intern at Threenitas?

We’re looking for talented students who are eager to learn, improve, and leave their mark on real-world digital projects. You’ll be involved in solving real problems and contributing to exciting projects with a significant impact.

At Threenitas, internships are more than just a learning experience. We’re committed to the growth and development of our team, which is why we offer access to structured training and seminars, as well as opportunities to work on projects that reach a large audience.

If you show promise and a desire for further growth, we will be happy to offer full-time or part-time contracts, regardless of any future military service obligations. Our flexible working environment allows for both hybrid work, so we’ll have the option of designing a mix of on-premise and remote work what works best for you.

Why You Should Apply

If you're ready to work in a modern, inclusive company culture with professionals who understand your needs and challenges, and if you’re looking for an environment where you can truly grow, then send us your CV! We’re eager to see how you can contribute and develop with us.

Important Notes:

• We value equality and non-discrimination. Please refrain from including a photo, age, or marital status in your CV or cover letter.
• We respect your privacy and are fully compliant with the General Data Protection Regulation (GDPR). Your CV and evaluation results will remain confidential.

Main responsibilities are:

Accounting Support:

• Update accounts receivable, issue invoices, and follow up on outstanding payments.
• Maintain accounts payable records and assist in reconciliations.
• Support the preparation of financial statements (e.g. income statements, balance sheets).
• Help with reviewing expenses, payroll records, and other financial documentation.
• Update and maintain financial databases for accuracy and reporting.
• Assist with month-end and year-end closing activities.
• Contribute to accounting projects and compliance tasks as needed.

Administrative Support:

• Organize and schedule meetings, appointments, and office calendars.
• Maintain company files and filing systems (physical and digital).
• Collect, organize, and record company expenses and receipts.
• Prepare and distribute correspondence such as memos, letters, and forms.
• Manage contact lists and help maintain vendor and client communications.
• Help ensure the office runs smoothly on a day-to-day basis.

 We know that you will be a good fit for our team, if...

• Currently pursuing or recently completed a degree in Accounting, Finance, Business Administration, or related field.
• Strong attention to detail and excellent organizational skills.
• High level of integrity and professionalism in handling sensitive information.
• Familiarity with accounting principles and administrative procedures.
• Proficient in Microsoft Office (especially Excel and Word).
• Good communication skills and the ability to work well within a team.
• Ability to multitask and work under pressure in a fast-paced environment.