Product Engineer

Fyxer Inc.

Job Overview

Location

London

Job Type

Full-time

Full Job Description

📋 Description

• Are you a visionary engineer driven by the opportunity to shape the future of work? Fyxer Inc. is seeking exceptional Product Engineers to join our elite team and help us redefine how professionals interact with their most critical communication tool: email. We are not just building a product; we are building the definitive AI-powered solution for modern work, and we're doing it at an unprecedented pace. This is a unique opportunity to join a rapidly scaling AI company that has grown from $1M to $30M ARR in a single year, with ambitious plans to reach $100M ARR by the end of 2026. If you thrive in a high-autonomy, high-impact environment and want to work alongside potential co-founders on a problem that matters, this is your chance.
• At Fyxer, we believe in the power of focus. Our mission is to solve the overwhelming challenge of email overload by providing AI-generated drafts that are not just helpful, but indispensable. We are a pure-play applied AI company, leveraging cutting-edge techniques like fine-tuned open-source models, tool use, and retrieval-augmented generation. This deep integration of AI allows our users to send an impressive 53% of the drafts we generate, a testament to the quality and relevance of our solution. We are committed to continuous improvement, using context from user inboxes, meetings, and messages to make our AI smarter and more personalized over time. Unlike many companies that dilute their vision with unnecessary features, we remain laser-focused on delivering the best possible AI-driven email experience.
• As a Product Engineer at Fyxer, you will be at the forefront of innovation. You will not only be responsible for building and shipping production software but will also have significant agency in defining product strategy. We operate without product managers, empowering our engineers to translate ambiguous problems into clear, high-impact product decisions. This role demands a startup-ready mindset, characterized by extreme ownership, rapid iteration, and a high degree of autonomy. You will be part of a small, elite technical team where your contributions directly influence the trajectory of the company. Your work will involve building an incredible product, ensuring users find and share value, training cutting-edge AI models, and developing scalable infrastructure that supports our rapid growth.
• We are building a company that aims to be a $10B+ leader in the AI application space. Our current trajectory and recognition, including being ranked 7th in Andreessen Horowitz's list of top AI apps based on real startup spend data, indicate our strong position. The other companies in the top 10 are already valued at $10B+, highlighting the immense potential of our market and our product. We are deliberate about hiring, seeking exceptional individuals who are passionate about solving hard problems and are willing to dedicate themselves to achieving ambitious goals. This intensity means you will move faster and learn more than you would at any other company. Examples of the impact our engineers have include building entire product features like our product notetaker, developing sophisticated human data platforms for model training, and leading infrastructure development from the ground up.
• Your responsibilities will span the full product development lifecycle. You will design, develop, test, deploy, and maintain robust and scalable software systems. You will collaborate closely with a small, high-performing team to identify user needs and translate them into elegant technical solutions. A key aspect of this role is working directly with AI/ML models in production, optimizing their performance, and ensuring their reliability. You will contribute to the strategic direction of our product, leveraging your strong product intuition and user-centric mindset to make critical decisions. We foster an environment of extreme ownership, where you are empowered to take initiative, experiment, and drive projects from conception to completion. This includes deciding when to incorporate qualitative insights from user interviews or quantitative data from our analytics, all supported by our dedicated data engineering team.
• We are committed to creating an environment free from bureaucracy and unnecessary processes. Our focus time, with no meetings until 3 PM, ensures deep work and uninterrupted progress. This is a place for individuals who are humble yet extremely ambitious, who are willing to give unreasonable effort to the right things, and who want to be part of something truly groundbreaking. If you are ready to take on significant challenges, drive substantial impact, and grow exponentially alongside a category-defining company, we encourage you to apply.

🎯 Requirements

• 5+ years of experience building and shipping production software, with deep expertise in Python or TypeScript and a track record of owning systems end-to-end.
• Hands-on experience with modern AI/ML tooling (LLMs, fine-tuning, RAG, embeddings, distributed training, inference optimisation, etc.) and proven ability to work directly with models in production.
• Strong product intuition and user-centric mindset, able to translate ambiguous problems into simple, high-impact product decisions without product managers.
• Startup-ready mindset: comfortable operating with extreme ownership, rapid iteration, and high autonomy within a small, elite technical team.
• Experience with cloud platforms (AWS, GCP, Azure) and containerization technologies (Docker, Kubernetes) is a plus.
• Excellent communication and collaboration skills, with the ability to articulate technical concepts clearly.

🏖️ Benefits

• Opportunity to join a rapidly scaling AI company with significant growth potential.
• High degree of autonomy and ownership over product strategy and execution.
• Work alongside a small, elite team of exceptional engineers.
• Competitive salary and equity package, up to £500k.
• Company-wide focus time with no meetings until 3 PM to enable deep work.
• A culture of extreme ownership, rapid iteration, and minimal bureaucracy.

Skills & Technologies

Python

TypeScript

Onsite

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Fyxer Inc.

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About Fyxer Inc.

Fyxer is a technology company that provides a platform for managing and resolving customer support issues. Their service aims to streamline the customer service process by offering tools for ticket management, communication, and analytics. The platform is designed to help businesses improve their customer support efficiency and customer satisfaction. Fyxer focuses on delivering a user-friendly interface and robust features to handle a wide range of support needs. They cater to businesses looking to optimize their customer service operations and build stronger customer relationships through effective issue resolution and communication strategies. Their goal is to empower businesses with the technology to deliver exceptional support experiences.

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