Senior Back-end Product (PHP, Symfony) - Fluix Team

Jobgether; España; Presencial; EUR 70.000 - 90.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

End-to-end ownership

AI-powered engineering

Cross-functional collaboration

Autonomy and knowledge sharing

Descripción de la vacante

Jobgether, on behalf of a partner company, seeks a Senior Back-end Product Engineer (PHP, Symfony) based in Spain. You will own backend product development within a mature B2B workflow automation platform, spanning core systems such as workflow automation, offline synchronization, document processing, e-signatures, and enterprise integrations.

You will participate in architectural decisions, drive production releases, and collaborate with multiple teams to deliver reliable experiences for

Formación

• 5+ years of backend engineering experience delivering complex features.
• Proficiency in PHP and Symfony; API design and DDD concepts.
• Experience with AWS services including EC2, S3, SQS, Lambda, DynamoDB, RDS, IAM.
• Familiarity with Kubernetes and serverless architectures.
• Experience with CI/CD and automated testing.
• Knowledge of JavaScript/TypeScript and Node.js frameworks like ExpressJS or NestJS.
• Experience applying AI in daily development and explaining usage.
• Understanding of OWASP security principles and ISO security standards is a plus.
• Strong product mindset and autonomous delivery.
• Excellent communication across multidisciplinary teams.

Responsabilidades

• Own backend features end-to-end from design to production release.
• Design scalable, reliable backend services, APIs, and data models.
• Decompose work, make architectural decisions, and present solutions.
• Refactor code and expand test coverage while adding new functionality.
• Use data, logs, and customer feedback to guide decisions.
• Incorporate AI tools into daily development and strengthen AI practices.
• Improve workflows with automation and observability.
• Participate in on-call rotations and resolve incidents.
• Coordinate releases and deployments with cross-functional teams.
• Collaborate with Backend, Frontend, iOS, Android, Support, and more.
• Propose engineering initiatives and share knowledge.

Conocimientos

PHP

Symfony

AWS

Kubernetes

CI/CD

Automated testing

Node.js

ExpressJS

NestJS

AI in software

OWASP

Herramientas

Xdebug

Blackfire

ExpressJS

NestJS

Descripción del empleo

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Back-end Product Engineer (PHP, Symfony) based in Spain.

This role offers end-to-end ownership of backend product development within a mature B2B workflow automation platform.
You\'ll work on core systems spanning workflow automation, offline synchronization, document processing, e-signatures, and enterprise integrations.
From understanding customer problems to designing, shipping, operating, and improving solutions, you\'ll have broad technical ownership.
The position combines hands-on engineering with architectural decision-making, product thinking, and continuous improvement.
You\'ll work across backend, frontend, mobile, support, and other teams to deliver reliable experiences for customers.
AI is an integral part of the engineering workflow, supporting development, testing, refactoring, investigation, and documentation.
The environment encourages autonomy, technical initiative, knowledge sharing, and meaningful improvements to a product used by businesses worldwide.

Accountabilities

• Own backend features end-to-end, from understanding customer problems and designing solutions through production release and continuous improvement.
• Design scalable, reliable, and maintainable backend services, APIs, and data models.
• Scope and decompose work independently, make architectural decisions, and present technical solutions to the team.
• Challenge requirements and technical approaches when simpler, more effective solutions are possible.
• Develop new functionality while refactoring existing systems, improving code quality and expanding test coverage.
• Use customer feedback, data, logs, and production insights to investigate issues and guide product and technical decisions.
• Incorporate AI tools into daily development for coding, refactoring, code reviews, testing, documentation, and technical investigations, while helping strengthen AI practices across the team.
• Improve development workflows through automation, stronger observability and alerting, and more effective release processes.
• Participate in shared on-call and support rotations, investigating production incidents and customer-reported issues, identifying root causes, and implementing long-term solutions.
• Prepare release plans and coordinate deployments.
• Collaborate with Backend, Frontend, iOS, Android, Support, and other teams to deliver reliable product experiences.
• Proactively propose engineering initiatives, improve development practices, and share technical knowledge with colleagues.

Requirements:

• 5+ years of backend engineering experience, including ownership of complex features or services from solution design through production.
• Strong proficiency in PHP and Symfony, with solid knowledge of system and API design, design patterns, clean code practices, and Domain-Driven Design (DDD).
• Hands-on experience with AWS services such as EC2, S3, SQS, Lambda, DynamoDB, RDS, and IAM, plus familiarity with Kubernetes and serverless architectures.
• Strong debugging and profiling capabilities, including experience with tools such as Xdebug and Blackfire.
• Experience with CI/CD, automated testing, and application observability.
• Familiarity with JavaScript/TypeScript, Node.js, and frameworks such as ExpressJS or NestJS.
• Demonstrated daily use of AI in software development, with the ability to explain how AI is used, what tasks are delegated, and how outputs are validated; experience building AI/LLM-powered product features is a plus.
• Good understanding of application security and OWASP principles; familiarity with ISO 27001, SOC 2, or comparable security standards is advantageous.
• Strong product mindset and autonomy, with the ability to start from a problem, design a solution, make sound technical decisions, and drive delivery through production.
• Strong communication and collaboration skills, with the ability to contribute to technical discussions and work effectively across multidisciplinary teams.

Benefits:

• Opportunity to work on a mature B2B workflow automation product used by customers worldwide.
• End-to-end ownership across product discovery, backend engineering, production operations, and continuous improvement.
• Hands-on exposure to workflow automation, document processing, e-signatures, enterprise integrations, offline synchronization, AWS, Kubernetes, and serverless technologies.
• Daily use and exploration of AI-powered engineering practices.
• Collaborative environment spanning backend, frontend, mobile, support, and other disciplines.
• Strong focus on technical mastery, ownership, innovation, and continuous learning.
• Opportunity to directly influence engineering practices, product improvements, and customer experiences.
• Culture that encourages fresh ideas, autonomy, knowledge sharing, and meaningful technical initiatives.

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