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

About us:
Forecode S.A. is a software design and implementation company, with a wide portfolio of products & services, facilitating digital transformation needs in both b2c & b2b sectors. We build reference applications, aiming for high ROI across the operations and management teams. We thrive to change the perception of how digital tools should look and function, especially in heavily regulated industries, with beefy operational processes. Our vision is to engage the b2b user base with their daily work, while raising the digital expectation bar for the management. And have fun while doing it!

Forecode is actively expanding the team and looking for highly resourceful devs and out-of-the-box thinkers, with experience in full-stack web app development, effective deployment and efficient maintenance, in both server and client sides.

Forecode is part of Navarino group, an innovative global technology company with offices in Greece, Norway, Germany, Cyprus, the United Kingdom, Hong Kong, USA, Singapore and UAE. We develop technology solutions for the shipping industry and are a leader in our sector.

We pride ourselves on our people and culture. We encourage innovative thinking, teamwork, and excellence. Our committed people, our values and ways of working create a dynamic, professional, fun, and family-oriented environment which delivers high value and excellence to our customers.

Ми шукаємо талановитого Strong Junior Frontend Developer для партнерської компанії, яка займається розробкою cloud-based рішення для професійних медіа та ентузіастів, які хочуть створити власне видання.

Платформа створена з урахуванням реальних потреб сучасних медіа: висока продуктивність, контент-синдикація, SEO-оптимізація, залучення читачів, побудова активної спільноти та незалежність завдяки моделі, що ґрунтується на підтримці читачів.

Звучить цікаво? Далі більше 💛

В цій ролі ти зможеш:

• Розробляти новий функціонал — від ідеї та обговорення до повноцінної реалізації й запуску;
• Покращувати та підтримувати продукт, усувати баги, оптимізовувати код, підвищувати стабільність та продуктивність системи;
• Брати активну участь в командних зустрічах, брейнштормах та технічних дискусіях;
• Співпрацювати з продуктовою командою для створення цілісного та якісного продукту.

Ти — наш ідеальний кандидат, якщо маєш:

Ми шукаємо талановитого Strong Junior Frontend Developer для партнерської компанії, яка займається розробкою cloud-based рішення для професійних медіа та ентузіастів, які хочуть створити власне видання.

Платформа створена з урахуванням реальних потреб сучасних медіа: висока продуктивність, контент-синдикація, SEO-оптимізація, залучення читачів, побудова активної спільноти та незалежність завдяки моделі, що ґрунтується на підтримці читачів.

Звучить цікаво? Далі більше 💛

В цій ролі ти зможеш:

• Розробляти новий функціонал — від ідеї та обговорення до повноцінної реалізації й запуску;
• Покращувати та підтримувати продукт, усувати баги, оптимізовувати код, підвищувати стабільність та продуктивність системи;
• Брати активну участь в командних зустрічах, брейнштормах та технічних дискусіях;
• Співпрацювати з продуктовою командою для створення цілісного та якісного продукту.

Ти — наш ідеальний кандидат, якщо маєш:

Staff Software Engineer (Backend)

Location: San Francisco, New York, or Remote (US)

On-site/Remote| Full-time

Compensation: $225K – $300K 

Our client is a high-growth, venture-backed organization (YC W24) that has raised over $35M to pioneer the next generation of autonomous digital workers. Unlike traditional chatbots or copilots, our client builds fully autonomous "AI employees" that research leads, manage complex outbound sequences, handle deliverability infrastructure, and self-optimize through behavioral patterns.

Currently at $8M+ ARR and scaling rapidly, the organization is deep in the development of its next-generation platform—a step change in the capabilities of AI agents. The backend is the core of this transformation, processing millions of signals to facilitate autonomous decision-making. Our client is seeking a Staff Software Engineer to serve in a foundational role, owning major segments of the platform infrastructure and driving high-throughput AI orchestration. The engineering culture is flat, high-velocity, and results-oriented. There is no red tape; engineers are expected to own outcomes end-to-end, from architecture and design to deployment and monitoring.

Key Responsibilities

Member of Technical Staff (Infrastructure)
On-site | Full-time
Compensation: $140K-$200K (CA$190K – CA$280K)

We are building the open-source browser infrastructure that powers the next generation of AI agents. With over 6,000 GitHub stars and millions of sessions served monthly, our platform grew 50x in 2025 alone. We provide the "eyes and ears" for AI, allowing developers to ship products that interact with the web seamlessly via our API.

As one of our first ten employees, you will join a high-performance, talent-dense team of four. We are backed by world-class investors and focused on solving the hardest problems in distributed systems, from kernel-level debugging to global VM orchestration.

The Role

As a Member of Technical Staff, you will build and scale the distributed systems that power millions of browser sessions. Browsers are notoriously resource-heavy; your mission is to make them fast, ephemeral, and globally accessible. You will work across the stack, but your primary focus will be on the core infrastructure that ensures sub-second startup times and robust multi-tenant isolation.

Key Responsibilities:

Member of Technical Staff (Applied AI Engineer)

Location: Toronto (Office)

On-site | Full-time

Compensation: $140K - $260K

Our client is seeking an Applied AI Engineer to join a high-growth, talent-dense team building open-source browser infrastructure for AI agents and applications. The organization provides a foundational Sessions API that enables developers to ship AI products capable of seamless web interaction.

After experiencing 50x growth in 2025 driven by a vibrant open-source community and word-of-mouth adoption, our client is expanding their founding engineering team. This role sits at the critical intersection of product engineering, applied research, and community engagement. The successful candidate will not only ship production-grade code but will also conduct experiments to determine the most effective strategies for browser automation, subsequently translating those insights into frameworks and content that empower the global developer ecosystem.

This is an intensive, high-impact role suited for engineers who thrive in fast-paced environments and are comfortable owning projects from conception to deployment.

Key Responsibilities

Company Introduction:

Apex is a growing agency focused on Conversion Rate Optimization (CRO), aimed at boosting client sales without increasing ad budgets. We work with top e-commerce brands to enhance their websites, using data and proven strategies to drive growth.

With a solid record of delivering results, we combine technical skills with a focus on improving user experience. As we expand, we offer opportunities to work with a talented team, solving challenges and applying advanced CRO methods.

If you’re looking to make a difference and help e-commerce businesses grow, alongside a team of driven professionals, consider joining the Apex team.

About the Role 

The Conversion Rate Optimization Expert is responsible for enhancing the performance of our clients’ websites by implementing data-driven strategies that maximize their conversion rates. 

This position plays a key role in analyzing user behavior, identifying optimization opportunities, and implementing changes to improve overall site performance. You will collaborate closely with copywriters, designers, web developers, and other team members.

Company Introduction:

Apex is a growing agency focused on Conversion Rate Optimization (CRO), aimed at boosting client sales without increasing ad budgets. We work with top e-commerce brands to enhance their websites, using data and proven strategies to drive growth.

With a solid record of delivering results, we combine technical skills with a focus on improving user experience. As we expand, we offer opportunities to work with a talented team, solving challenges and applying advanced CRO methods.

If you’re looking to make a difference and help e-commerce businesses grow, alongside a team of driven professionals, consider joining the Apex team.

About the Role 

The Conversion Rate Optimization Expert is responsible for enhancing the performance of our clients’ websites by implementing data-driven strategies that maximize their conversion rates. 

This position plays a key role in analyzing user behavior, identifying optimization opportunities, and implementing changes to improve overall site performance. You will collaborate closely with copywriters, designers, web developers, and other team members.