PHP Backend Developer at Monks

Please note that we will never request payment or bank account information at any stage of the recruitment process. As we continue to grow our teams, we urge you to be cautious of fraudulent job postings or recruitment activities that misuse our company name and information. Please protect your personal information during any recruitment process. While Monks may contact potential candidates via LinkedIn, all applications must be submitted through our official website (monks.com/careers). About the role Monks is looking for a backend developer to drive the evolution of our proprietary central orchestration engine. Based on your knowledge in PHP, you will be a key member of the team, designing, coding, testing, and supporting applications that enable businesses to operate more effectively and competitively. Key Responsibilities • Develop and maintain server-side logic using PHP, ensuring high performance, responsiveness, and reliability. • Evolve internal management frameworks to meet adapting business requirements and sunset legacy systems. • Build and maintain complex bi-directional syncs across the enterprise stack (Salesforce, NetSuite, Workday, and other internal proprietary developed tools) to ensure a flawless data exchange. • Design and implement APIs and RESTful services that adhere to industry standards. • Work with databases, including setup, maintenance, and optimization to ensure "One Source of Truth" across project data. • Identify and resolve bugs, bottlenecks, and ensure the 100% stability of critical internal tooling. • Write clean, scalable, and effectively commented code following best practices. • Focus on reducing "gap time friction" and automating manual workflows to accelerate business velocity. • Integrate AI-driven features like agentic workflows to automate workflows. • Maintain comprehensive documentation, including technical specifications and API documentation. Qualifications • 3-5+ years of professional backend development experience (PHP is a must), with a focus on modern frameworks and design patterns. • Extensive knowledge of Symfony. • Strong understanding of object-oriented programming, application design patterns, and analysis. • Proven experience in Web Services, REST API design, and integrating third-party APIs (e.g., OAuth). • Experience with modern cloud platforms (AWS, GCP, or Azure) and containerization/virtualization like Docker. • Curiosity-First Mindset: You don't wait for a manual; you play, break things, and ask "What if?" to adopt new tools and workflows • Knowledge of agile methodologies and experience working effectively in an agile development environment. • Excellent communication skills in English, both written and verbal. Technical Skills • Proficiency with database technologies such as SQL Server, PostgreSQL, or NoSQL databases. • Knowledge of DevOps practices, CI/CD pipelines, and Git version control. • Familiarity with security principles and best practices in web application development. • Secondary proficiency in other programming languages (e.g., NodeJS, Python, or TypeScript) is highly valued. Bonus Skills • Familiarity with ERP integrations like NetSuite or Salesforce • Experience with container orchestration tools like Kubernetes. • Understanding of front-end technologies like ReactJS and Next.js is a plus. At Monks, we believe in fostering an environment where a diversity of perspectives can thrive. We proactively work to design hiring processes that promote equity and inclusion while mitigating bias. We celebrate diversity and are committed to building a team that reflects the communities we serve. We welcome and encourage qualified applicants, from all backgrounds, who are excited to contribute to our mission. #LI-FP1 About Monks Monks is the global, digital-first, data-driven, unitary operating brand of S4 Capital plc. With a legacy of innovation and specialized expertise, Monks combines an extraordinary range of global Marketing and Technology Services to redefine how brands interact with the world. Through Monks.Flow, its flagship AI ecosystem for marketing orchestration, Monks transforms marketing into a growth engine, collapsing timelines and connecting brands to culture in real time. By deploying bespoke intelligent agents across disciplines and delivering culturally relevant, high-impact creative and digital solutions, Monks solves key critical business challenges across the entire brand enterprise to help brands sustain long-term impact. Monks was named a Contender in The Forrester Wave™: Global Marketing Services, ranks among Cannes Lions' Top 10 Creative Companies (2022-25) and remains the only partner featured in AdExchanger’s Programmatic Power Players list every year (2020-24). Named Adweek’s first AI Agency of the Year (2023) and The One Show’s inaugural AI Pioneer Organization, Monks was also awarded Business Intelligence Group’s 2025 Excellence in Artificial Intelligence Award in both the Organizational and AI Product categories. As a trusted partner to cutting-edge innovators in tech, Monks earned titles such as Optimizely Experimentation Partner of the Year (2025), runner-up for the Adobe Firefly Partner Award (2024), and Workato’s AI Visionary Customer Impact Award (2024). Additionally, Monks achieved a record-breaking number of FWAs and continues to hold the most of any partner. We are an equal-opportunity employer committed to building a respectful and empowering work environment for all people to freely express themselves amongst colleagues who embrace diversity in all respects. Including fresh voices and unique points of view in all aspects of our business not only creates an environment where we can all grow and thrive but also increases our potential to produce work that better represents—and resonates with—the world around us.