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.
Founded by passionate learning and innovation experts, Learni's mission is to make professional training accessible to everyone, anywhere in the world. Our team operates in major hubs — London, New York, Boston — and internationally, to support talents and organizations in upskilling.
Don't let this gap widen
Without this expert training, your Java apps risk chronic memory leaks costing up to 50k€ in annual production downtimes according to Gartner.
Teams stagnate on obsolete Java 11, losing 40% productivity compared to competitors on scalable Java 21.
Unmanaged concurrency bugs multiply incidents x3, delaying launches by 4-6 months.
Lack of JVM tuning wastes 30% cloud resources, exploding budgets.
Framework obsolescence exposes you to cyber-risks, GDPR fines up to 4% revenue.
Invest 35h to avoid these pitfalls, scale flawlessly, and boost project ROI x5.
Dive into Java 21 novelties, code immutable records for performant DTOs, practice pattern matching on streams for expressive data processing, build APIs with sealed classes for robust architecture, test live with JUnit 5, leave with production-ready snippets that boost your productivity starting tomorrow.
Explore Project Loom to scale without limits, implement virtual threads on IO-bound apps, optimize locks and synchronization with real e-commerce high-load exercises, profile with VisualVM to track bottlenecks, produce scalable thread-safe deliverables at 10k req/s, experience the thrill of x10 performance in live conditions.
Deploy resilient microservices with Spring Boot 3 and WebFlux, code reactive streams for real-time data pipelines, integrate Kafka for event-driven architecture, test resilience with Chaos Monkey, generate Docker containers ready for K8s, transform your monoliths into scalable ecosystems that withstand traffic spikes.
JVM tuning for +30% performance, profile heap and GC with JFR, implement Micrometer-Prometheus-Grafana observability on critical apps, analyze bottlenecks in banking-scale exercises, optimize Hibernate queries for zero latency, leave with live dashboards and configs that cut your cloud costs by 25% in production.
Secure with Spring Security OAuth2 and JWT, integrate SAST/DAST scanners, automate zero-downtime CI/CD via GitHub Actions and ArgoCD, build a complete final microservices project, pair-programming code review, obtain certification and ready-to-integrate Git repo, become the expert who protects and deploys in a snap.
The Training Java Expert - Master the advancements to scale your apps program is delivered onsite or remote (blended-learning, e-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 Java Expert - Master the advancements to scale your apps 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 Java Expert - Master the advancements to scale your apps 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.
Learni programs are available inter-company and intra-company, onsite or remote. Enrollments are possible up to 48 business hours before the program starts. Our programs are eligible for corporate funding paths. Contact us to discuss your training project and funding options.
« cool, j'ai appris des trucs »
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
« 😊👍 »
« bien 👍 »
« Allan Busi t'es au top, continue comme ça. formation géniale »
« cool, j'ai appris des trucs »
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
« 😊👍 »
« bien 👍 »
« Allan Busi t'es au top, continue comme ça. formation géniale »
« cool, j'ai appris des trucs »
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
« 😊👍 »
« bien 👍 »
« Allan Busi t'es au top, continue comme ça. formation géniale »
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.
Développement WebIndustry-certified
Développement WebIndustry-certified
Développement WebIndustry-certified
Développement WebIndustry-certified
Développement WebIndustry-certified
Développement WebIndustry-certified
Frameworks & BibliothèquesIndustry-certified
Frameworks & BibliothèquesIndustry-certified
Frameworks & BibliothèquesIndustry-certified
Frameworks & BibliothèquesIndustry-certified
Frameworks & BibliothèquesIndustry-certified
Frameworks & BibliothèquesIndustry-certified
Langages de ProgrammationIndustry-certified
Langages de ProgrammationIndustry-certified
Langages de ProgrammationIndustry-certified
Langages de ProgrammationIndustry-certified
Langages de ProgrammationIndustry-certified
Langages de ProgrammationIndustry-certified
Cloud ComputingIndustry-certified
Cloud ComputingIndustry-certified
Cloud ComputingIndustry-certified
Cloud ComputingIndustry-certified
Cloud ComputingIndustry-certified
Cloud ComputingIndustry-certified30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.