BUILD STUFF 2026 · SOFTWARE DEVELOPMENT CONFERENCE · VILNIUS, LITHUANIA · DECEMBER 2–4

THE AGE OF AGENCY

Build Intelligence. Keep Human Agency.

The software development conference for developers, engineers and architects.

Software is beginning to write, decide and act. Build Stuff 2026 brings together the developers, engineers, architects and technology leaders building this new reality — and deciding what must remain human.

Substantive sessions
103
Unique speakers
84
Days in Vilnius, Lithuania
3
Years of Build Stuff
15

Engineers from these companies were in the room last year

  • Microsoft
  • Google
  • Meta
  • Amazon Web Services
  • IBM
  • Netflix
  • Spotify
  • PayPal
  • Oracle
  • GitHub
  • JetBrains
  • Red Hat
  • Accenture
  • EPAM
  • Okta
  • Danske Bank
  • SEB
  • Swedbank
  • Vinted
  • Wargaming

01 / The question

As software begins to act for us, who is actually making the decisions — and what must remain human?

Software can now generate code, retrieve knowledge, choose tools, coordinate work and take action. This creates new possibilities, but also larger systems, unfamiliar failure modes and important questions about responsibility, security and control.

Build software that can act. Decide where it should stop.

  1. Machine agency

    AI agents and systems that increasingly act, decide and coordinate.

  2. Developer agency

    Engineers choosing better tools, architectures and boundaries rather than surrendering to hype.

  3. Organizational agency

    Teams redefining roles, accountability and decision-making in the age of AI.

  4. Human agency

    Preserving judgment, responsibility, creativity, focus and purpose.

02 / Evidence from the program

AI is part of the conversation. Not the whole conversation.

Software still needs sound architecture, reliable infrastructure, effective testing, strong security, accessible interfaces and people capable of making good engineering decisions. The theme emerges from the accepted sessions themselves.

103substantive sessions
84unique speakers

Accepted-session export, September 13, 2026. Sessions may belong to more than one topic.

  1. AI-Native Software Development31 sessions · 36%
  2. Software Architecture & Distributed Systems24 sessions · 28%
  3. Developer Craft / Code Quality & Performance17 sessions · 20%
  4. Data Systems / Databases / AI Infrastructure11 sessions · 13%
  5. Cloud Infrastructure / DevOps / Platform Engineering10 sessions · 12%
  6. Engineering Leadership / Productivity9 sessions · 11%
  7. Frontend / UX / Modern Interfaces8 sessions · 9%
  8. Developer Well-Being6 sessions · 7%
  9. Cybersecurity & Secure Software Engineering5 sessions · 6%
See the complete program

06 / Choose your access

Be in the room where the decisions get made.

Three days of real systems, working code, production lessons and consequential conversations in Vilnius, Lithuania — or join online from anywhere.

Ticket Pre-Early Bird Ended Early Bird Ended Late Bird Order by Oct 20Current price Regular Order by Nov 13 Late Saver Order by Nov 25 Last Minute From Nov 26Buy
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3-Day OnlineJoin from anywhere€380€410€440€470€530€590Choose
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VIP 3-Day Onsite + Hotel (3 nights)Three nights included€1,070€1,170€1,270€1,370Choose
Get your ticket

VIP 3-Day · 1-Day Onsite · 3-Day Online · VIP + Hotel

Roman V. Yampolskiy
Keynote · AI safety + security

04 / Confirmed keynote

Roman V. Yampolskiy

AI safety and security researcher · University of Louisville

Author of more than 300 publications on AI safety and security. His work confronts the central question of this conference: how much authority should intelligent systems receive, and who remains accountable when software makes decisions on our behalf?

300+
Publications
Main stage
Keynote · Vilnius, Lithuania

Part of a lineup of 84 speakers across six stages.

Also confirmed

Learn from people doing the work.

Expect working code, live demonstrations, production postmortems, experiments, decision frameworks and lessons earned by building real systems.

  • Richard Campbell

    Richard Campbell

    Host of .NET Rocks, RunAs Radio and Windows Weekly

    Building Data Centers That Don't Suck

  • Jimmy Bogard

    Jimmy Bogard

    Independent Consultant · Lucky Penny Software

    OpenTelemetry in a Brownfield World

  • Ben Dechrai

    Ben Dechrai

    Disaster Postponement Officer · Zencoder

    Building Rock-Solid Encrypted Applications

  • Venkat Subramaniam

    Venkat Subramaniam

    Keynote · Award-winning author · Agile Developer, Inc.

    From Specification to Production, Engineering in the Age of AI

  • Kevlin Henney

    Kevlin Henney

    Thought Provoker · Curbralan

    The Past, Present and Future of Programming Languages

  • Christina Aldan

    Christina Aldan

    Consultant · Arana Software

    Turtles All the Way Down and Trauma All the Way Up

  • Tricia Diamond

    Tricia Diamond

    Director/Founder · Diamond PMO Solutions

    The Second Line: What a New Orleans Jazz Funeral Teaches About Building Recoverable AI Systems

  • Mihaela Gheorghe-Roman

    Mihaela Gheorghe-Roman

    Senior Software Architect · Systematic

    AI in the Dark: Running LLMs in Air-Gapped Production Environments

See all speakers and sessions

03 / How the theme translates

Five things we believe about building software right now.

Responsible agency: give systems appropriate authority, with clear boundaries, security and accountability. Resilient agency: build software that can withstand failure, adapt to change and remain understandable in production. Human agency in practice: preserve judgment, creativity, focus and responsibility as our tools become more capable.

  1. 01

    Software that acts

    We are entering a phase where software no longer only executes instructions; it interprets, decides and acts.

  2. 02

    Engineering after the demo

    Build Stuff is where AI moves beyond prompts and prototypes into architecture, infrastructure, testing, security and production.

  3. 03

    Human judgment remains architecture

    The most important design decision may be where autonomy ends and human responsibility begins.

  4. 04

    Real craft still matters

    Systems thinking, code quality, performance, reliability, security and domain knowledge become more, not less, important.

  5. 05

    The builders shape what comes next

    The future is being designed by the people in the room, not happening to them.

05 / What you will learn

Practical outcomes, not predictions.

Expect working code, live demonstrations, production postmortems, experiments, decision frameworks and lessons earned by building real systems.

01Build AI systems that work beyond the demo

Learn how to choose the right agent technology, structure spec-driven development, coordinate specialized agents and create portable memory and context layers that do not lock knowledge into a single model or provider.

  • Select an agent platform based on the problem instead of the vendor pitch.
  • Design memory, retrieval and context that make agents useful over time.
  • Compare TDD, BDD and no-testing approaches for AI-generated code.
  • Evaluate retrieval and generation separately in RAG applications.
  • Control token costs, latency, model quality and infrastructure usage.
  • Choose between hosted, local, on-device and air-gapped AI deployments.

Why it matters Generating code is becoming easier. Proving that the result is correct, secure, maintainable and worth operating is becoming the harder part.

02Give autonomous systems the right amount of authority

See what happens when AI moves from suggesting an answer to issuing a refund, modifying infrastructure, accessing private data or taking an irreversible action.

  • Separate untrusted input from the authority to perform an action.
  • Protect AI applications against prompt injection and data exfiltration.
  • Use least privilege, deterministic policy checks, isolation and audit logs.
  • Design human checkpoints that hold when automation bias appears.
  • Build systems that recover from AI failures instead of depending on heroics.

Why it matters Stronger prompts cannot serve as security boundaries. Systems need to remain safe when a model is confused, manipulated or simply wrong.

03Design software that remains understandable

Go deep into modularity, Domain-Driven Design, context maps, event sourcing, dependency injection, resilient distributed systems and evolutionary architecture.

  • Create useful module boundaries and reduce accidental coupling.
  • Turn context maps into tools for architectural decision-making.
  • Design idempotent workflows that survive retries, duplicates and partial failures.
  • Build systems around timelines, events and explicit state transitions.
  • Evolve architecture as understanding of the product and domain improves.
  • Decide which parts of a technology stack to own and which to rent.

Why it matters More generated code does not automatically create better software. Clear boundaries and sound architectural decisions become more valuable as the volume of code increases.

04Operate reliable infrastructure under real constraints

Follow the program from local development environments to Kubernetes, Kafka, sovereign cloud platforms, AI gateways, internal AI factories and the physical realities of modern data centres.

  • Add OpenTelemetry to existing systems without rewriting everything.
  • Detect whether a deployment degraded production using statistical analysis.
  • Define service objectives, recovery targets and graceful degradation.
  • Test cloud services locally with containers and emulators.
  • Evaluate microVMs, scale-to-zero infrastructure and emerging cloud models.
  • Understand the power, cooling, water and regulatory constraints behind AI infrastructure.

Why it matters Cloud and AI systems eventually meet physical, financial and regulatory limits. Good engineering requires understanding those limits before they become incidents or expensive architectural traps.

05Strengthen security and privacy

Explore end-to-end encryption, perfect forward secrecy, secure device migration, OAuth, post-quantum security, prompt injection and lessons drawn from 1,000 real data breaches.

  • Protect data and metadata at rest and in transit.
  • Implement encryption without creating false confidence.
  • Apply current OAuth and OpenID Connect practices.
  • Understand how passwords and sensitive data are compromised in real systems.
  • Build private AI tools that keep data under your control.

Why it matters Systems are gaining access to more tools, credentials and sensitive information. Security has to be part of the architecture, not a feature added after deployment.

06Strengthen your engineering craft

Develop practical skills in modern SQL, testing, code archaeology, browser APIs, web performance, programming language design and the future of version control.

  • Use property-based, mutation and snapshot testing effectively.
  • Understand unfamiliar and legacy code before changing it.
  • Reduce dependencies by using capabilities built into modern browsers.
  • Apply window functions, CTEs, temporal tables, JSON and vector search in modern SQL.
  • Evaluate emerging version-control tools such as Jujutsu, Sapling and GitButler.

Why it matters Most production software was not written yesterday. Developers still need to understand existing systems, make careful changes and recognize when a new approach is genuinely better.

07Build products people can use

Connect accessibility, cognitive psychology, interface design, performance, real-time graphics, virtual reality and the science of memory.

  • Separate accessibility issues AI can fix from those requiring human judgment.
  • Add accessibility checks to automated testing from the beginning.
  • Apply cognitive psychology and usability principles to interface decisions.
  • Build distinctive products instead of repeating generic interface patterns.
  • Create faster navigation and high-frequency interactive experiences.

Why it matters Faster production does not guarantee a better product. People still need software that is understandable, accessible, responsive and designed for their real needs.

08Lead teams through technological change

Examine engineering roles, technical hiring, team design, technical debt, communication, focus, neurodiversity and resilience.

  • Adapt technical interviews when candidates use AI tools.
  • Organize teams around faster, AI-assisted development workflows.
  • Recognize architectural decisions that were never consciously made.
  • Decide which technical debt should be repaid and which can remain.
  • Protect concentration and work more effectively with neurodiverse colleagues.

Why it matters Speed without clarity creates more rework, worse decisions and exhausted teams. Sustainable engineering depends on attention, communication and organizational judgment.

Leave clearer about what to build, how to build it — and what should remain human.

Get your ticket

07 / 2012 — 2026

Fifteen years of people who build stuff.

Since 2012, Build Stuff has grown into the largest software development conference in the Baltics. In 2026, we celebrate our 15th Build Stuff in Lithuania by returning to the idea that started it all: a conference for people who build stuff.

Developers. Architects. Designers. Data professionals. Security specialists. Engineering leaders. Founders. Researchers. Everyone turning complex ideas into technology that matters.

Last year in Vilnius, Lithuania

Build Stuff 2025 highlights

Who is in the room

Joined by engineers, architects, researchers and technology leaders from organizations including Microsoft, Nord Security, Redpanda, EPAM, Systematic, Vilnius University, Johns Hopkins University, the University of Zurich and many others.

08 / Beyond the sessions

What you take home besides the slides.

Build Stuff also looks beyond everyday product development — from clinical genomics in hospitals to AI infrastructure changing biology, data transforming manufacturing and virtual worlds helping scientists study human memory. The systems we build increasingly affect medicine, industry, culture, privacy and the way people understand the world.

Build skills you can use

Leave with reference architectures, security checklists, evaluation methods, testing strategies, observability patterns, decision frameworks and new ways to reason about complex systems.

Build connections

Meet developers, architects, researchers, founders and technology leaders from around the world. Exchange ideas, challenge assumptions and form relationships that continue long after the conference.

Build credibility

In an age of synthetic content and effortless claims, real experience matters. Trust grows through face-to-face conversations, working demonstrations and honest accounts of what succeeded, what failed and what was learned.

Build perspective

Examine how much authority intelligent systems should receive, who should control critical data, what organizations should own, and how teams can move faster without losing quality, judgment or focus.

Build community

Continue the conversation through meetups, social activities and games. Recharge in the chill-out space, discover Vilnius, Lithuania and experience the famous Build Stuff party, an unforgettable evening of technology, comedy, music and community.

Build for everybody

Build Stuff is committed to providing a safe, welcoming and harassment-free experience for everyone, regardless of gender, gender identity, age, sexual orientation, disability, physical appearance, race, ethnicity, religion, background or technology choices. Our Code of Conduct helps create a space where every participant can contribute, learn and belong.

Real systems · Real decisions · Real responsibility

Build better systems. Make better decisions. Keep human agency.

Let's Build Stuff.

Partner packages from €2,500 excl. VAT · Community, Silver, Gold and Platinum (limited to 2)

December 2–4, 2026 · Radisson Blu · Vilnius, Lithuania