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 expert Doctrine ORM mastery, your PHP Symfony apps see their DB queries multiplied by 5, wasting 40% of dev time on unnecessary optimizations.
Companies suffer 28% revenue losses due to load times >3s, with 65% user abandonments.
Security incidents via vulnerable mappings cost 150k€ on average per breach, 72% backend audits fail on Doctrine performance.
Untrained teams delay deployments by 2 months, widening the gap with scalable competitors.
Career risk: 55% senior devs blacklisted without modern ORM expertise.
Act to avoid costly downtime and boost project ROI.
Dive into advanced Doctrine ORM mapping configurations via YAML and annotations, configure bidirectional many-to-many relations with proxies, manage joined and single table inheritance on real enterprise cases, perform practical exercises refactoring existing entities, produce an optimized relational schema with ER diagrams and validation via Doctrine CLI, integrate lifecycle callbacks for automated audits, all while benefiting from trainer feedback for immediate production mastery.
Master the Doctrine ORM query builder for expert DQL, optimize joins and subqueries on large datasets, implement result cache and query cache with Redis/Memcached, analyze Symfony profilers for bottlenecks, perform exercises refactoring slow queries to 10x faster, test advanced pagination and lazy loading in real e-commerce scenarios, generate performance reports with Blackfire, apply custom hydration strategies to boost your enterprise REST APIs.
Deploy zero-downtime Doctrine ORM migrations with custom hooks, create custom repositories for complex business queries, configure event listeners and subscribers for secure logging, integrate Doctrine with Messenger and GraphQL APIs, complete the full red thread project for a scalable app, test in a Dockerized environment with massive fixtures, monitor via Symfony Profiler and ELK tools, produce deployable documentation and optimization plan for your team, ensuring immediate certifying skills.
The Training Doctrine ORM - Optimizing PHP Symfony Performance 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 PHP Symfony Performance 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 PHP Symfony Performance 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.
Data engineeringIndustry-certified
JavaScript & TypeScriptIndustry-certified
Data analysis & BIIndustry-certified
Databases & SQLIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
PHP & CMSIndustry-certified
Databases & SQLIndustry-certified
Databases & SQLIndustry-certified
Databases & SQLIndustry-certified
Databases & SQLIndustry-certified
Databases & SQLIndustry-certified
Databases & SQLIndustry-certified
Data engineeringIndustry-certified
Data engineeringIndustry-certified
Data engineeringIndustry-certified
Data engineeringIndustry-certified
Data engineeringIndustry-certified
Data engineeringIndustry-certified
Data analysis & BIIndustry-certified
Data analysis & BIIndustry-certified
Data analysis & BIIndustry-certified
Data analysis & BIIndustry-certified
Data analysis & BIIndustry-certified
Data analysis & BIIndustry-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.