Rigorous trainer selection
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
- Triple validation: technical, pedagogical, sectoral.
- Minimum rating 4.8/5 over the last 12 sessions.
Describe your need, get a tailored program and a pre-filled quote in 3 min. A 100% free call with an advisor.
1 seat held for the next session
Request a call back and an advisor reaches you within 24 business hours, Monday to Saturday.

To fight inequalities in access to education, Learni donates a complete school kit to a child in need for every training booked. You build your skills, a child heads back to school.
Founded by engineers and learning experts, Learni's mission is to make high-impact tech training accessible to teams everywhere. We work remotely with organizations across the US and Canada, in your time zone, to help teams upskill fast.
Don't let this gap widen
Without mastering Doctrine ORM, PHP developers waste 50% of their time on tedious, error-prone manual SQL queries.
Teams that neglect advanced mappings generate 3x more persistence bugs, costing an average of 15k€ per major data-refactoring incident.
In 2026, 68% of Symfony job postings require certified Doctrine skills, shutting junior profiles out of salaries above 55k€.
Every project without high-performance ORM digs a fatal competitive gap, with DB downtimes multiplied by 4 and scalability capped at 10k users per day.
Quick installation of Doctrine ORM via Composer in an intermediate Symfony project, entity definition using PHP 8 attributes, mappings via annotations or YAML for professional flexibility, initial unit tests with PHPUnit integrating the EntityManager, practical exercises on an e-commerce business case with basic repository creation, schema generation via Doctrine console for accelerated and secure startup.
In-depth exploration of Doctrine ORM relationships with lazy loading and eager fetching to avoid costly N+1 queries, cascade persist/delete configuration in a business context, exercises on a red thread CRM project involving users, orders, and products, use of proxies and persistent collections, resolution of common issues like circular references, production of ER diagrams and association documentation for optimal maintainability.
Mastery of DQL for native-like queries without raw SQL, dynamic QueryBuilder construction with joins, where, and group by for analytical dashboards, creation of custom repositories to encapsulate business logic, integration of pagination and partial hydration for production scaling, practical cases on application logs with full-text search, query profiling via Blackfire to identify and fix bottlenecks, delivery of a performant reporting module.
Generation and execution of Doctrine migrations for schema evolutions without downtime, second-level cache configuration with Redis or APCu accelerating reads by 70%, fixture management for seed data in CI/CD tests, security audit against injections and entity validations, advanced Symfony integration with Events and Listeners, completion of the red thread project with Dockerized deployment, delivery of certified best practices and post-training optimization plan.
The Training Doctrine ORM - Optimizing Persistence in PHP Symfony program is delivered onsite or remote (blended-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.
The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.
For the smooth delivery of the Training Doctrine ORM - Optimizing Persistence in PHP Symfony program, the following equipment is required:
For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.
Assessment of skills acquired during the Training Doctrine ORM - Optimizing Persistence in PHP Symfony program is performed through:
Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.
Registration is possible up to 48 business hours before the start of training. All our programs are built for corporate L&D budgets and delivered onsite or remotely.
Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.
Java & JVM ecosystemIndustry-certified
Backend & APIsIndustry-certified
Web developmentIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
Java & JVM ecosystemIndustry-certified
Java & JVM ecosystemIndustry-certified
Java & JVM ecosystemIndustry-certified
Java & JVM ecosystemIndustry-certified
Java & JVM ecosystemIndustry-certified
Java & JVM ecosystemIndustry-certified
Backend & APIsIndustry-certified
Backend & APIsIndustry-certified
Backend & APIsIndustry-certified
Backend & APIsIndustry-certified
Backend & APIsIndustry-certified
Backend & APIsIndustry-certified
Databases & SQLIndustry-certified
Databases & SQLIndustry-certified
Databases & SQLIndustry-certified
Databases & SQLIndustry-certified
Databases & SQLIndustry-certified
Databases & SQLIndustry-certifiedAvailable on-site and remotely. Pick your city to see the local training center.
30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.