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 teams waste 50% of their time on inefficient manual SQL queries, generating N+1 queries that slow apps by 300% under load.
Mapping errors cause 25% of production incidents, costing 10k€/mois in downtime for an SME.
In 2024, 68% of Symfony job postings require Doctrine expertise, sidelining untrained juniors.
Every project without an optimized ORM widens the competitive gap, multiplying DB bugs by 4 and stalling business growth.
Act before your competitors ship more scalable solutions.
Dive into configuring Doctrine ORM entities via annotations and YAML, create complex mappings with inheritance and custom types, implement Symfony validation integrated with Doctrine for reliable production data, perform practical exercises on a red thread e-commerce project, test persistence and custom repositories, produce an optimized database schema ready for enterprise use, with code review by the expert trainer.
Explore unidirectional, bidirectional, and many-to-many relationships in Doctrine ORM, configure cascades and ownership for robust Symfony models, master DQL for native queries and QueryBuilder for dynamic constructions with joins and aggregates, apply pagination and partial hydration on concrete enterprise cases like a CRM, develop reusable repositories, generate complex reports, optimize to avoid N+1 queries from the first practical tests.
Manage Doctrine migrations with Make:migration and fixtures for automated seeding in Symfony CI/CD, integrate second-level cache via Redis or Memcached to boost performance, configure lazy/eager loading and proxies for ultra-fast queries, analyze bottlenecks with Blackfire and Doctrine Profiler, apply best practices on the red thread project with Docker deployment, produce a customized Doctrine bundle, measure real-time gains up to 70% faster, prepare for certified production.
The Training Doctrine ORM - Optimizing Symfony Persistence 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 Symfony Persistence 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 Symfony Persistence 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.
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
Web developmentIndustry-certified
Web developmentIndustry-certified
Web developmentIndustry-certified
Web developmentIndustry-certified
Web developmentIndustry-certified
Web developmentIndustry-certified
E-commerceIndustry-certified
E-commerceIndustry-certified
E-commerceIndustry-certified
E-commerceIndustry-certified
E-commerceIndustry-certified
E-commerceIndustry-certified
Automation & workflowsIndustry-certified
Automation & workflowsIndustry-certified
Automation & workflowsIndustry-certified
Automation & workflowsIndustry-certified
Automation & workflowsIndustry-certified
Automation & workflowsIndustry-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.