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WeAreDevelopers LIVE • Sep 24, 2025

WeAreDevelopers LIVE - GraalVM in action, Static Analysis insights and more

Chris Heilmann , Daniel Cranney , Rick Ossendrijver

Are backend bottlenecks throttling your business logic? See how Picnic leverages the GraalVM Polyglot Engine to let analysts safely deploy 37 million rules daily without engineering tickets.

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#1 about 4 min

Picnic's grocery delivery and electric vehicle fleet

How the Netherlands-based supermarket utilizes small electric vehicles for efficient last-mile delivery.

#2 about 2 min

Building shared Java modules and analyst targeting platforms

Creating internal architecture to support scalable data workflows and customized marketing campaigns.

#3 about 4 min

Leveraging data for app personalization and reverse logistics

Using customer insights to recommend products and reducing emissions by picking up clothing returns.

#4 about 3 min

Automating grocery fulfillment centers and warehouse routing

Transitioning from manual picking to proprietary automated conveyor systems and route optimization algorithms.

#5 about 4 min

Enforcing consistent code quality with static analysis

Transitioning to modern Java versions and standardizing programming styles through automated syntax rules.

#6 about 5 min

Exploring agentic browsers and artificial intelligence generation

The privacy concerns and usability implications of integrating generative AI natively into web browsers.

#7 about 3 min

Managing application bundles and server-driven user interfaces

How dynamic page rendering engines bypass slow app store approvals and reduce massive download sizes.

#8 about 3 min

Evaluating emerging CSS features and package manager security

Monitoring new frontend styling capabilities alongside the growing attack vectors in trusted package dependencies.

#9 about 4 min

Preserving retro tech demos and interactive browser captchas

Exploring WebAssembly ports of classic computer graphics alongside highly creative bot verification paradigms.

#10 about 2 min

Nullish coalescing assignment and syntax readability tradeoffs

Balancing conciseness with code maintainability when adopting modern programming shortcut operators.

#11 about 2 min

Mastering advanced CSS view transitions and masking

Introducing modern frontend resources for learning layout capabilities without adding framework bloat.

#12 about 3 min

Phishing attacks leveraging terminal access and shell commands

Analyzing malicious popups that attempt to bypass browser security by tricking users into executing shell scripts.

#13 about 10 min

Empowering business analysts with a polyglot rule engine

Utilizing GraalVM to let non-developers write production business logic across multiple scripting languages.

#14 about 4 min

Defining promotional logic with data and action bindings

Authoring evaluation blocks in Python and JavaScript to safely read events and trigger database operations.

#15 about 5 min

Securing and optimizing contexts on the GraalVM engine

Enforcing resource limitations and sharing compiled code paths to reduce CPU and memory consumption.

#16 about 5 min

Translating Java objects into guest language representations

Using Jackson introspection to pass complex event payloads into native object proxy models securely.

#17 about 5 min

Fetching contextual inputs and emitting downstream actions

Executing side-effect SQL queries from Java wrappers to enrich user conditions before returning operations.

#18 about 7 min

Defending infrastructure against rogue script execution

Preventing queue overloads with automated rate limiters, syntax checking, and safe dry-run environments.

#19 about 10 min

Scaling the rule engine and reducing backend dependencies

How the decoupled architecture handles immense transaction volumes while accelerating complex feature rollouts.

Matching moments

9:56 min

Final code walk-through and audience Q&A session

Germán Álvarez · LIVE

1:34 min

Managing and controlling agentic code at enterprise scale

Edith Harbaugh Edith Harbaugh +3 · World Congress 2026 Europe

3:15 min

Optimizing performance and overcoming Open Policy Agent barriers

Philipp Krenn · World Congress 2023

21:18 min

Audience Q&A on developer advocacy and Java trends

Josh Long · LIVE

22:32 min

Audience Q&A on language support, performance, and tradeoffs

Akmal Chaudhri Akmal Chaudhri · LIVE

3:45 min

Packaging native executables with Spring Native and buildpacks

Josh Long · World Congress 2022

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