Job Title: Backend Engineer
Employer: Nexoya
Job Type: Remote
Location: United Kingdom
Salary/Rate: Not Specified
UK Visa Sponsorship: Not Available

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Overview

This Backend Engineer role focuses on building scalable backend services, API integrations and AI-powered features for Nexoya’s marketing optimisation platform. It offers end-to-end engineering ownership in an AI-first environment, with remote work available within the European Economic Area (EEA).

Description

• Build and maintain backend services using Node.js and TypeScript.

• Develop GraphQL APIs, advertising platform integrations and data ingestion systems.

• Design and deliver LLM- and agent-powered features, including an in-app AI assistant.

• Own backend features from design through deployment to production.

• Deploy and operate services on Azure cloud using Docker and Kubernetes.

• Build reliable data-processing systems using MySQL and RabbitMQ.

• Maintain clear API schemas, stable contracts and reliable integrations.

• Implement AI evaluation, monitoring, retrieval, tool calling and safety guardrails.

• Improve the agent framework, testing practices, code reviews and technical documentation.

• Participate in architectural decisions and rotating internal support duties.

Responsibilities

• Develop, test, deploy and maintain backend applications and services.

• Design and evolve GraphQL APIs and integrations with advertising platforms.

• Build and maintain data ingestion pipelines and message-driven services.

• Implement AI and agent-based capabilities using structured outputs, retrieval and tool calling.

• Monitor production services and improve reliability, performance and maintainability.

• Conduct code reviews and contribute to engineering standards and documentation.

• Collaborate with colleagues on technical decisions and communicate design trade-offs.

• Participate in internal support rotations and resolve technical issues.

Requirements

• At least three years of backend engineering experience with Node.js and TypeScript.

• Strong API design experience using GraphQL or REST.

• Practical experience with MySQL and message brokers.

• Experience deploying services with Docker, Kubernetes and a major cloud platform; Azure is preferred.

• Strong problem-solving skills and an interest in discussing technical trade-offs in writing.

• Commitment to producing clean, maintainable and well-tested code.

• Fluency in English.

• Desirable: Experience with Google Ads, Meta advertising APIs or marketing attribution.

• Desirable: Production experience with AI, LLMs, agents, Anthropic/OpenAI APIs, MCP or retrieval-augmented generation (RAG).

• Desirable: LLM evaluation, observability, data pipelines or AI coding tools such as Claude Code.

• Additional advantage: German language proficiency.

Benefits

• Meaningful impact on how enterprise marketers allocate advertising budgets.

• End-to-end ownership of engineering projects and features.

• AI-first working culture that encourages experimentation, automation and knowledge sharing.

• Transparent, collaborative workplace with open communication.

• Regular team events and opportunities to connect with colleagues.

• Twice-yearly Strategy Days where the team contributes to company direction.

• Remote working within the European Economic Area (EEA).

How to Apply;

Interested and qualified candidates should:
Click here to apply online for this job

Disclaimer

Author: Simon RobertEasyInfoBlog is a multi-author blog. We have experts and professionals in various fields who share their ideas and expert knowledge to help you with your daily information needs. Thanks for reading!