Senior Backend Engineer

Location: EMEA / EU Hours - Authorised to work in EMEA

Remote | Full-time

Compensation: €90K - €130K

Our client is a high-growth fintech leader specializing in simplifying multi-chain DeFi for traditional financial institutions, fintechs, and service providers. By offering a unified API, the platform provides seamless access to on-chain liquidity across all major blockchains for optimized same-chain and cross-chain swaps. The organization is on a mission to enable a fairer, decentralized world while prioritizing exceptional user experiences to make complex technologies accessible to a global audience.

The organization is seeking multiple Senior Backend Engineers to lead the design, development, and maintenance of robust, scalable, and secure backend systems. Reporting to the Backend Lead, the successful candidates will collaborate with cross-functional teams— including frontend developers, product managers, and designers—to deliver high-quality software solutions. The technical environment utilizes a modern stack including Node.js (TypeScript), MongoDB, Redis, and ethers.js, supported by a GitOps CD chain involving Kubernetes and AWS.

Key Responsibilities

Software Engineer (Backend & AI Infrastructure)

Location: San Francisco, CA

Hybrid | Full-time

Compensation: $160K – $300K + Equity

Our client is a venture-backed technology firm based in San Francisco that is redefining the global research industry through AI-powered user interviews. By leveraging advanced AI-moderated technology, the platform enables global enterprises to achieve deep qualitative insights at unprecedented speed and scale. Currently serving world-class brands across the technology and consumer sectors, our client is disrupting a $140B market by replacing slow, high-cost legacy services with high-performance automated solutions.

Following a breakout year characterized by 8x growth, the organization recently secured a $30M Series B funding round led by top-tier Silicon Valley investors. The engineering team is currently scaling to support the rapid adoption of AI-moderated research as the new industry standard. This is a high-impact opportunity for a Backend Software Engineer to join a lean, elite team of 30 in San Francisco and take ownership of mission-critical infrastructure.

Key Responsibilities

We are OB Streem, a leading end-to-end logistics provider delivering intelligent and innovative solutions in Southeast Europe. Our rich heritage stems from decades of expertise with ORBIT (Orphee Beinoglou International Transports) and Makios Logistics drives our forward-thinking approach in providing excellence in service.

We believe every journey begins with a commitment—to our clients and our team. With a deep-rooted passion and a drive to redefine industry standards, we strive to create seamless logistics solutions that empower businesses and individuals alike. Our mission is to navigate the complexities and challenges of global logistics, ensuring flexibility, reliability, efficiency, and an unwavering focus on customer satisfaction.

As part of the OB Streem family, you will contribute to maintaining a legacy of excellence while being empowered to innovate, collaborate, and make a meaningful impact every day. If you share our vision of transforming logistics into an experience of trust and reliability, we invite you to embark on this exciting journey with us.

We are seeking an experienced and detail-oriented Tax Accountant Professional  to join our Finance Department at our offices located in Elefsina.

We are OB Streem, a leading end-to-end logistics provider delivering intelligent and innovative solutions in Southeast Europe. Our rich heritage stems from decades of expertise with ORBIT (Orphee Beinoglou International Transports) and Makios Logistics drives our forward-thinking approach in providing excellence in service.

We believe every journey begins with a commitment—to our clients and our team. With a deep-rooted passion and a drive to redefine industry standards, we strive to create seamless logistics solutions that empower businesses and individuals alike. Our mission is to navigate the complexities and challenges of global logistics, ensuring flexibility, reliability, efficiency, and an unwavering focus on customer satisfaction.

As part of the OB Streem family, you will contribute to maintaining a legacy of excellence while being empowered to innovate, collaborate, and make a meaningful impact every day. If you share our vision of transforming logistics into an experience of trust and reliability, we invite you to embark on this exciting journey with us.

We are looking for a detail-oriented and proactive Accounting Assistant to join our Finance Department at our offices located in Elefsina.

As an Accounting Assistant you will be responsible for supporting daily accounting operations and ensure the accuracy and integrity of financial data.

About the Role

As our SEO Expert, you will take full ownership of SEO strategy and execution for a portfolio of e-commerce clients. This is a client-facing role that combines strategic responsibility with hands-on implementation.

You will be responsible for developing, executing, and continuously improving SEO strategies that drive measurable organic growth. This role requires you to think ahead, identify risks early, and solve problems before they impact performance or client confidence.

You will work autonomously on day-to-day client work while collaborating closely with the Marketing Manager on strategic direction, complex challenges, and innovation within our SEO offering.

Mission Statement

The primary mission of the SEO Expert is to ensure that client SEO strategies are executed effectively, proactively, and with measurable business impact. This means anticipating challenges, adapting to changes in search behavior, and consistently delivering strong organic growth for e-commerce clients.

About the Role

As our SEO Expert, you will take full ownership of SEO strategy and execution for a portfolio of e-commerce clients. This is a client-facing role that combines strategic responsibility with hands-on implementation.

You will be responsible for developing, executing, and continuously improving SEO strategies that drive measurable organic growth. This role requires you to think ahead, identify risks early, and solve problems before they impact performance or client confidence.

You will work autonomously on day-to-day client work while collaborating closely with the Marketing Manager on strategic direction, complex challenges, and innovation within our SEO offering.

Mission Statement

The primary mission of the SEO Expert is to ensure that client SEO strategies are executed effectively, proactively, and with measurable business impact. This means anticipating challenges, adapting to changes in search behavior, and consistently delivering strong organic growth for e-commerce clients.

About the Role

As our SEO Expert, you will take full ownership of SEO strategy and execution for a portfolio of e-commerce clients. This is a client-facing role that combines strategic responsibility with hands-on implementation.

You will be responsible for developing, executing, and continuously improving SEO strategies that drive measurable organic growth. This role requires you to think ahead, identify risks early, and solve problems before they impact performance or client confidence.

You will work autonomously on day-to-day client work while collaborating closely with the Marketing Manager on strategic direction, complex challenges, and innovation within our SEO offering.

Mission Statement

The primary mission of the SEO Expert is to ensure that client SEO strategies are executed effectively, proactively, and with measurable business impact. This means anticipating challenges, adapting to changes in search behavior, and consistently delivering strong organic growth for e-commerce clients.

About the Role

As our SEO Expert, you will take full ownership of SEO strategy and execution for a portfolio of e-commerce clients. This is a client-facing role that combines strategic responsibility with hands-on implementation.

You will be responsible for developing, executing, and continuously improving SEO strategies that drive measurable organic growth. This role requires you to think ahead, identify risks early, and solve problems before they impact performance or client confidence.

You will work autonomously on day-to-day client work while collaborating closely with the Marketing Manager on strategic direction, complex challenges, and innovation within our SEO offering.

Mission Statement

The primary mission of the SEO Expert is to ensure that client SEO strategies are executed effectively, proactively, and with measurable business impact. This means anticipating challenges, adapting to changes in search behavior, and consistently delivering strong organic growth for e-commerce clients.

About the Role

As our SEO Expert, you will take full ownership of SEO strategy and execution for a portfolio of e-commerce clients. This is a client-facing role that combines strategic responsibility with hands-on implementation.

You will be responsible for developing, executing, and continuously improving SEO strategies that drive measurable organic growth. This role requires you to think ahead, identify risks early, and solve problems before they impact performance or client confidence.

You will work autonomously on day-to-day client work while collaborating closely with the Marketing Manager on strategic direction, complex challenges, and innovation within our SEO offering.

Mission Statement

The primary mission of the SEO Expert is to ensure that client SEO strategies are executed effectively, proactively, and with measurable business impact. This means anticipating challenges, adapting to changes in search behavior, and consistently delivering strong organic growth for e-commerce clients.

About the Role

As our SEO Expert, you will take full ownership of SEO strategy and execution for a portfolio of e-commerce clients. This is a client-facing role that combines strategic responsibility with hands-on implementation.

You will be responsible for developing, executing, and continuously improving SEO strategies that drive measurable organic growth. This role requires you to think ahead, identify risks early, and solve problems before they impact performance or client confidence.

You will work autonomously on day-to-day client work while collaborating closely with the Marketing Manager on strategic direction, complex challenges, and innovation within our SEO offering.

Mission Statement

The primary mission of the SEO Expert is to ensure that client SEO strategies are executed effectively, proactively, and with measurable business impact. This means anticipating challenges, adapting to changes in search behavior, and consistently delivering strong organic growth for e-commerce clients.