About Signal Ocean:

Signal Ocean is the technology arm of the Signal Group, a diversified shipping services group with offices in London and Athens. Our main product, The Signal Ocean Platform, allows ship charterers, brokers and owners to securely process, combine and analyse complex arrays of private and public shipping data. Powered by sophisticated machine learning / artificial intelligence technologies, the platform delivers customized, exclusive insights that help our clients achieve performance and efficiency.

About the role

As the Signal Ocean Platform continues to grow, we’re expanding our engineering team. We're looking for a Back-End Engineer with experience in C#, someone who is curious, proactive, and passionate about building high-quality digital solutions. Signal’s Software Engineers work closely with data science, design, product, and business analysis professionals to develop robust solutions for the highly entrepreneurial domain of shipping.

Technology Stack

We are looking for a proactive QA engineer (IOT) with strong mobile and API testing experience who is confident with Allure TestOps, Postman, DevTools, SQL, and Git. You will create clear test plans, ensure coverage, find and track bugs, and partner with product and engineering to ship reliable releases fast.

Responsibilities:

• Find, document, and track bugs
• Write test cases, test plans, and checklists
• Ensure optimal test coverage across features and releases
• Join grooming and help with clear task decomposition

• Test mobile apps for iOS and Android
• Work closely with product, design, and engineering

Requirements

Backend Engineer (Hyperliquid Focus)

Location: Remote (EMEA Region Only) Type: Full-Time

Compensation: €90K - €130K

We are hiring on behalf of our client who are on a mission to simplify multi-chain DeFi for financial institutions, fintechs, and service providers. Their team is building a unified infrastructure layer that provides seamless access to on-chain liquidity across all major blockchains, enabling high-performance same-chain and cross-chain swaps. They are a passionate, remote-first team dedicated to making complex decentralized technologies accessible and building a fairer, more transparent world.

They are looking for a Backend Developer with a deep interest in the Hyperliquid ecosystem to join their engineering team. This is a pure backend role—no frontend or design work is required. You will focus on building the infrastructure that allows them to distribute programmatic trading features (such as TWAP and perps) to the broader DeFi ecosystem.

Location Note: This position is strictly open to candidates currently located in the EMEA region.

What you’ll do:

Senior Backend Engineer (Intents & Order Infrastructure)

Location: Remote - Based in EMEA regions
compensation: $130K - $165K

We are simplifying multi-chain DeFi for traditional financial institutions, fintechs, and service providers. Our platform offers a unified API to access all on-chain liquidity across major blockchains, ensuring the best prices for same-chain and cross-chain swaps. We are a passionate, remote-first team on a mission to enable a fairer, more decentralized world by making complex blockchain technologies accessible to everyone.

We are looking for a Senior Backend Engineer to lead the development and scaling of our core off-chain coordination service. This is a critical infrastructure role, as the Order Server acts as the central hub for the entire Intent lifecycle—from quote aggregation and validation to real-time broadcasting and cross-chain status tracking.

In this role, you will build secure, high-throughput systems using TypeScript and NestJS that allow applications to discover competitive quotes while protecting the network from fraudulent orders. This position is vital for the success of our solver-based architecture and requires a deep focus on security, performance, and reliability.

Key Responsibilities:

About Signal Ocean:

Signal Ocean is the technology arm of the Signal Group. Our primary product, The Signal Ocean Platform, enables shipping professionals to securely handle, integrate, and assess intricate collections of private and public shipping data. Driven by advanced machine learning and artificial intelligence, our technology suite provides tailored, exclusive insights that supports our clients in improving performance and efficiency. Insights are delivered over web and mobile applications, as well as through a rich set of APIs and SDKs. Our backend architecture is abstracted to modularly offer deep analytics capabilities our solutions leverage or can be directly embedded in our client’s system topologies.

About the role

As the Signal Ocean Platform continues to grow, we’re expanding our engineering team. We're looking for a Front-End Engineer with experience in React, someone who is curious, proactive, and passionate about building high-quality digital solutions. Signal’s Software Engineers work closely with data science, design, product, and business analysis professionals to develop robust solutions for the highly entrepreneurial domain of shipping.

Technology Stack

At Quento, the ICT arm of the Qualco Group, we deliver comprehensive and innovative solutions across AI, Digital Engineering, Cloud, and Cybersecurity, helping businesses accelerate digital transformation. With a presence in Greece, Luxembourg, and Belgium, and backed by the expertise of the Qualco Group, we combine deep technical knowledge with strategic partnerships to support business growth.

We are hiring a hands-on software developer (3+ years experience) to join our Romania team and grow into a ServiceNow developer/technical consultant. No prior ServiceNow experience is required—we will train you end-to-end on the platform and give you structured opportunities to contribute to EU and international delivery projects.

Senior Frontend Engineer (Web3/DeFi)

Location: Fully Remote - EU time zones Type: Full-Time

Compensation: $150K - $175K

We are seeking a high-caliber Senior Frontend Engineer to lead the development of a performant, responsive, and real-time application powering a next-generation decentralized exchange (DEX) and network. In this role, you will bridge the gap between complex blockchain infrastructure and a seamless user experience, meeting the demands of a fast-paced, data-intensive trading environment.

Our team is a dynamic, forward-thinking, and fully remote group with an ambitious roadmap. We are looking for an engineer who thrives on the intersection of DeFi, Web3, and high-stakes security. If you have a relentless drive for speed without sacrificing rigor, and a commitment to state-of-the-art software testing, we want to build the future of finance with you.

Key Responsibilities:

We are QUALCO, the technology arm of Qualco Group, with over 25 years of experience in delivering innovative solutions to the financial sector. We serve clients in over 30 countries, helping banks and other financial institutions manage credit and loans effectively while ensuring full regulatory compliance. Our advanced software leverages analytics, artificial intelligence, and digital technologies to support every stage of the credit and lending lifecycle, remaining at the forefront of fintech innovation.

A Day in the Life of a Senior Full Stack Java SW Engineer at Qualco will include: 

Founding Product Engineer

Location: San Francisco, CA (In-person) Employment Type: Full-time

Compensation: $130K - $170K / 0.5% - 1.5%

Build the Engineering Foundation of In-Person Connection We are an AI-powered platform revolutionizing how companies plan corporate events—from high-stakes executive offsites to global company-wide conferences. Our software automates the logistics of venue sourcing and vendor negotiations, making it seamless for teams at companies like Google and Amazon to create meaningful moments in real life.

The Role As a Founding Product Engineer, you won’t just be writing code; you will be shaping the very core of our product and engineering culture. You will work at the intersection of complex backend logic and polished, high-end frontend design. This is a role for an engineer who has strong product intuition and enjoys the "zero-to-one" journey of building features that large enterprise customers rely on.

What You’ll Do:

Founding Engineer

Location: San Francisco, CA (In-person) Employment Type: Full-time

Compensation: $130,000 - $170,000

Architecting the Future of In-Person Connection We are an AI-powered platform transforming the way companies plan corporate events—from high-stakes executive retreats to global conferences. Our software automates the logistics of venue sourcing and vendor negotiations, making it faster and easier for teams at companies like Google and Amazon to meet up in real life. We are on a mission to make it easier for teams to create meaningful moments together, and we are looking for a Founding Engineer to help build that foundation.

The Role As a Founding Engineer, you will be a cornerstone of our technical team. You won’t just be executing on tickets; you will be making key technical decisions, influencing product direction, and shaping our engineering culture from day one. This is a "zero-to-one" opportunity for someone who loves building full-stack products and wants to see their work have a direct impact on customers.

What You’ll Do: