Are you the go-to tech person in your friend group? Do you have a weak spot for minimalist design, sleek user interfaces, and premium gadgets? Pack your bags! We are looking for energetic, German-speaking Customer Experts to join our booming international hub of over 400+ tech enthusiasts in Athens, Greece.

In this role, you will represent an American multinational technology icon—one of the absolute "Big Five" premium brands in the world. You will be the face and voice of their world-class Online Store, helping users navigate high-end hardware, luxury devices, and premium accessories.

What You'll Do (The Day-to-Day)

You will connect with our German-speaking community via inbound phone calls, live chat, and email to deliver a premier customer experience. Your responsibilities are divided into two exciting tracks:

Join Excelya, where Audacity, Care, and Energy define who we are and how we work. We believe in creating bold solutions and fostering an inclusive environment where collaboration and individual growth go hand in hand.  

This role is an exciting opportunity to contribute to a dynamic, ambitious team in Medical Affairs. You will play a critical part in driving innovation and making an impact in the clinical research space, while enjoying a stimulating professional environment that encourages personal and intellectual growth. 

The Study Medical Reviewer is accountable for managing/reviewing the medical consistency of reported clinical data to ensure that medical data in database are accurate, reliable and analyzable. He/Her has the responsibility of his/her studies/projects to provide reliable and consistent data from a medical point of view and to bring medical expertise to all processes from the set-up to the lock of the study.

Main Responsibilities

Location: New York, United States • London, United Kingdom (Office)

On-Site | Full-time

Compensation: Competitive Compensation

Our client is a high-growth software development company and a major contributor to one of the largest and fastest-growing crypto social networks globally. Operating in a high-velocity, high-impact environment, the organization builds cutting-edge infrastructure that supports massive global transaction volumes and substantial revenue generation.

The organization is seeking a Staff Software Engineer (Payments) to design and build the core payment services at the center of this ecosystem. This is a senior, high-ownership role designed for an engineer who thrives on solving hard, ambiguous problems end-to-end—from the moment money enters the system to final settlement, reconciliation, and delivery.

Operating within a lean team of highly experienced engineers, the successful candidate will focus on 0→1 development, moving quickly while maintaining the absolute rigor required for financial systems. The engineering culture prioritizes low bureaucracy, continuous production deployment, and trust in individual judgment over rigid processes.

Key Responsibilities

Senior Rust Engineer (Solana/DeFi)

Location: Remote (CET +/- 4 hours) Type: Full-time

Compensation: $72K - $90K

We are a stealth-stage DeFi Trading & Intelligence platform dedicated to the Solana ecosystem. We are building the critical infrastructure required for sophisticated on-chain decision-making—ranging from real-time signals and smart money tracking to enterprise-grade fraud detection. Our platform delivers high-fidelity on-chain analytics through a high-performance API. We are a small, fast-moving team tackling the most challenging problems in blockchain data. As a Senior Rust Engineer, you will play a pivotal role in architecting systems that process millions of Solana transactions in real-time.

This is an early-stage startup environment. We are looking for an engineer who thrives on high ownership, fast iteration cycles, and the opportunity to ship code that immediately impacts production environments. If you are passionate about building high-throughput infrastructure and solving "hard" data problems, we want to hear from you.

Responsibilities

Senior Backend Engineer (Rust/C++ – DeFi & Fintech)

Location: Fully Remote - EU timezone Type: Full-Time

Compensation: Competetive

We are hiring on behalf of our client who is looking for a Senior Backend Engineer to lead the architecture and development of the core systems powering a next-generation decentralized exchange (DEX) and network. This is a high-impact role where you will go beyond writing code—you will design resilient, secure, and low-latency systems capable of processing high-frequency trading data in real time.

They are a dynamic, fully remote team with an ambitious roadmap and a relentless drive to redefine the future of finance. The ideal candidate thrives at the intersection of DeFi, Systems Engineering, and High-Performance Computing. If you have a deep commitment to code quality and a passion for building mission-critical infrastructure, we want to hear from you.

Key Responsibilities:

Job Title: Senior Medical Monitor

Location: EU/Non EU

Type: Remote, Freelance

About the Job

Join Excelya, where Audacity, Care, and Energy define who we are and how we work. We believe in creating bold solutions and fostering an inclusive environment where collaboration and individual growth go hand in hand.

This role is an exciting opportunity to contribute to a dynamic, ambitious team in Medical Affairs. You will play a critical part in driving innovation and making an impact in the clinical research space, while enjoying a stimulating professional environment that encourages personal and intellectual growth.

Main Responsibilities:

Senior Rust Engineer - On-Chain Security Infrastructure

Location: Remote - Europe

Compensation: $165K - $200K

We are building a Credible Layer—a step-level improvement for on-chain security designed to safeguard the crypto industry and restore credibility after billions were lost to hacks. We are creating an on-chain protocol and off-chain infrastructure that enables protocols to enforce security rules for every transaction. Backed by world-class investors, we are seeking a Senior Rust Engineer to work on bleeding-edge infrastructure at the heart of our mission.

You will play a crucial role in shipping cutting-edge features that extend the EVM (Ethereum Virtual Machine) to enable security rules to be checked after every state transition. This is a high-impact, deeply technical role requiring expertise in performance optimization and low-level systems programming within a collaborative, fast-iteration environment.

Key Responsibilities: