Resilience engineered, not assumed.

Transforming failures into opportunities.

Building systems that expect the unexpected.

Resilience by design, not by accident.

Prepare for surprises, not just the predictable.

Building confidence in an uncertain digital world.

Be ready today for tomorrow's failure.

We help software organizations improve resilience and achieve operational excellence

Our Mission

To strengthen organizations through resilience engineering, helping them build the technical capabilities and cultural foundations to withstand disruption, adapt to change, and thrive in uncertainty. We are committed to transforming how organizations approach resilience—from reactive firefighting to proactive preparation—by sharing proven methodologies developed through decades of experience.


What we do

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Resilience Partnership

  • Providing a comprehensive, long-term collaboration that includes all aspects of our expertise in a single integrated service. Through regular sessions, direct access for critical decisions, and periodic on-site visits, I provide ongoing strategic guidance while incorporating elements of architecture review, operational excellence uplift, and specialized training in both resilience and chaos engineering. This holistic approach ensures your organization receives continuous support across all resilience dimensions, with training and implementation activities timed strategically to build sustainable capabilities. The partnership evolves with your needs, making it ideal for organizations committed to transformational improvement rather than isolated initiatives.

People in a meeting room with laptops and gift bags, attending a presentation.

Resilience Engineering Training

  • Providing your organization with comprehensive education on the principles, practices, and cultural elements of building truly resilient systems. Moving beyond just preventing failures, this program teaches teams to design adaptive systems that anticipate change, learn from incidents, and maintain essential functions during disruption. Through workshops, case studies, and practical exercises, participants learn to implement resilience patterns, develop effective monitoring, create robust response procedures, and build the organizational capabilities needed to thrive in uncertain conditions. This training emphasizes the socio-technical aspects of resilience, balancing technical solutions with the human factors essential to sustained operational excellence.

Overhead view of a collaborative workspace with laptops, smartphones, notebooks, and various office supplies on a wooden table.

Chaos Engineering Training

  • Offering specialized training in the theory and practice of deliberately introducing controlled failures to uncover system weaknesses before they affect users. Your teams will learn to design, implement, and analyze chaos experiments that test recovery mechanisms and reveal hidden issues. I teach practical approaches for safely implementing chaos engineering in different environments, from development to production, and help establish a progression path for your organization to mature its chaos capabilities. This training provides immediate value through actual experiments while building your team's confidence to make chaos engineering a sustainable practice.


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Resilience Strategy Advisory

  • Supporting technical executives in their strategic thinking, providing an independent opinion of their current state, assisting in building a resilient technical strategy, and validating or challenging proposals from existing vendors.

About us

At Resilium Labs, we help software organizations build systems that not only recover from failure but also expect it and thrive through it.

Drawing from twenty years of IT industry experience, including a decade at AWS designing resilience for the world's most demanding companies, we provide long-term advisory partnerships that transform both technical systems and team capabilities.

Our approach combines deep technical expertise with a practical understanding of the human and organizational factors that create truly resilient systems. We don't just apply theoretical patterns; we've built and implemented resilience practices at a global scale.

We believe that resilience is not just about preventing failures; it's about creating organizations that learn, adapt, and grow stronger through challenges. Our work focuses on building durable capabilities that enable continuous improvement, not just quick fixes.

Whether you're struggling with outages, preparing for regulations, or aiming to build true operational excellence, we offer proven approaches that balance immediate improvements with long-term transformation.


Trusted by industry leaders and pioneers


Our team

Adrian Hornsby has over twenty years of experience in software systems engineering and operations, spanning organizations from large enterprises to small startups. He spent nine years at Amazon Web Services (AWS), including the last four years as a Principal Engineer, where he helped shape resilience strategies for some of the world’s largest and most critical systems. Today, he is the Founder and CEO of Resilium Labs, helping organizations build technical and cultural resilience to thrive through disruption. He holds a Master’s Degree in Networks and Telecommunications from Telecom St-Etienne, pursued doctoral studies in Networks and Telecommunications at Tampere University of Technology, and earlier earned a Bachelor-Technician Degree in Electronics from Lycée Portes de l’Oisans.

Adrian is also the creator of Resilience Bites, a curated newsletter highlighting trending topics, must-read articles, inspiring voices, and emerging tools in the resilience field. Through this platform, he shares thought-provoking insights and connects professionals with events and opportunities in resilience and reliability engineering.


What people say about us

  • "More often than not, "consultants" can talk the talk, but cannot walk the walk. If you want/need to improve the resilience of your systems and operations, Adrian has proven that he can deliver. He is an educator at heart, with in-depth knowledge based on real experience."

  • "As I moved on to focus on sustainability and eventually retired from AWS I’ve forwarded many people to “the other Adrian” as he specialized in the AWS Fault Injection Service and has now become the go-to independent expert in this space. Most companies don’t realize that a good resilience program will speed up their time to market for everything else, and Adrian can help you get there. "

  • "A true pioneer in the software resiliency space, he has brought unparalleled expertise and innovative thinking that have strengthened our team and influenced the industry. His vision and leadership transformed a small team into a thriving department of over 50 people, creating lasting impact across the company and for AWS customers."

  • "Collaborating with Adrian has been transformative for our team’s and BMW Group as enterprise approach to resiliency and chaos engineering."


FAQs

  • Resilience engineering is the discipline of designing systems that can withstand, recover from, and adapt to unexpected disruptions. Unlike traditional approaches that focus on preventing failures, resilience engineering acknowledges that failures are inevitable in complex systems and focuses on building the capability to respond effectively when they occur.

    Click here to read a detailed post on that topic.

  • Chaos engineering is the practice of deliberately introducing controlled failures into systems to test their resilience. Think of it as a scientific approach to building confidence in your systems' ability to withstand unexpected conditions.

    Rather than randomly breaking things, chaos engineering involves careful experimentation.

    This proactive approach allows organizations to discover and fix hidden vulnerabilities during planned exercises rather than during actual outages. Common experiments include simulating server failures, network latency, resource exhaustion, or dependency outages.

    Chaos engineering has evolved into a sophisticated discipline practiced by forward-thinking organizations across industries. It represents a fundamental shift from hoping systems will work during disruption to verifying their resilience through evidence-based testing.

  • Resilience engineering delivers multifaceted value by protecting revenue through preventing costly outages, creating competitive advantage by maintaining service when competitors cannot, enabling faster innovation without sacrificing stability, systematically managing complex socio-technical risks, building adaptive capacity to handle unexpected challenges, and balancing efficiency with effectiveness. Beyond merely preventing failures, resilience engineering transforms your organization into one that learns from challenges and grows stronger through adversity, turning potential threats into opportunities for improvement that strengthen your position in increasingly unpredictable business environments.

    Click here to read a detailed post on that topic.

  • Unlike traditional IT consulting that often focuses on specific technologies or isolated improvements, our approach addresses the socio-technical aspects of resilience. We combine technical expertise with organizational and cultural considerations to build sustainable capabilities that evolve with your business. We don't just implement tools; we help transform how your organization thinks about and responds to disruption.

  • While we have extensive experience with technology organizations, our resilience principles apply to any business that relies on complex systems. We've worked with clients across industries including finance, healthcare, travel, retail, and manufacturing. The common factor is organizations that depend on resilient digital systems to serve their customers.

  • Most of our partnerships begin with a 6-month commitment. Building resilience capabilities is not a quick fix but a transformational journey. Some clients continue the partnership beyond the initial period at varying levels of intensity as their needs evolve. The pace of engagement determines how quickly we can implement key improvements.

  • While our partnership offers the most comprehensive value, we understand that organizations have different needs and constraints. We offer focused training programs and targeted assessments that can serve as entry points. However, we find that sustainable resilience requires the holistic approach of a partnership.

  • Absolutely. Our approach is technology-agnostic and complements your existing investments. We'll help you maximize the resilience capabilities of your current tools while identifying any critical gaps. We don't require you to replace technologies unless they fundamentally limit your resilience capabilities.

  • The return varies based on your current state and industry, but our clients typically see significant value in three areas: reduced costs from outages (which average €100,000-300,000 per hour in many industries), improved operational efficiency, and enhanced competitive advantage. Many clients find that preventing just one major incident pays for their entire resilience investment.

  • Organizations that benefit most from our services recognize that resilience is a strategic advantage rather than just an IT concern. Readiness indicators include executive support for resilience initiatives, recent incidents that highlighted issues, growth that's testing system limits, or regulatory requirements demanding improved resilience. We can help you understand your readiness through an initial conversation.

  • We promise that our engagement will identify specific, actionable improvements to your resilience posture, with clear implementation paths. While no consultant can guarantee the elimination of all failures, we commit to measurable improvements in your ability to anticipate, respond to, and learn from disruptions.

  • You'll begin seeing insights from our assessment within the first few weeks. The timeline for meaningful improvements depends on both your chosen engagement pace and your organization's readiness to implement changes.

    With strong internal commitment and active participation, initial improvements can begin within the first month. Organizations that dedicate resources, empower decision-making, and embrace recommendations typically see significant results 2-4 times faster than those with implementation constraints or competing priorities.

    The pace of your chosen engagement option provides a baseline expectation but your team's involvement and willingness to implement change is the most critical factor in determining how quickly we can transform resilience capabilities.

  • The best first step is a conversation to understand your current challenges and objectives. Contact us to schedule an initial discussion, and we'll explore whether our services align with your needs. There's no obligation, and this conversation alone often provides valuable perspectives on your resilience opportunities.


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Resilium Labs Oy
+358 (0)504361615
adhorn@resiliumlabs.com