Portrait of Julien Deray, Director of Engineering at SwissBorg

Julien Deray

Director of Engineering at SwissBorg. I scale engineering teams in fintech and crypto with aviation-inspired operational discipline β€” structured briefings, blameless debriefs, and relentless continuous improvement. Hands-on with automation across departments, driving our AI transformation strategy.

πŸ“ Lisbon, Portugal

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My Journey

Mar 2026 – Present
Director of Engineering
@ SwissBorg Β· Remote

Sole Director in the engineering organisation and right hand to the Head of Engineering across 8 teams. Setting delivery standards and shaping engineering strategy for the challenges ahead.

Apr 2023 – Mar 2026
Senior Engineering Manager
@ SwissBorg Β· Remote

Scaled engineering from 30 to 70+, shipped a 21M CHF Series A crowdfunding platform, and led the Identity team delivering continuous PSAN / MiCA compliance for 900k+ users.

2021 – Apr 2023
Engineering Manager
@ SwissBorg Β· Remote

Joined to build and lead a team in the crypto space. Established Kanban practices org-wide and drove gamification on the Loyalty side of the app (3.5M BORG purchased).

2020
Engineering Manager
@ Artos Systems Β· London

Led a solutions team of 4 focused on fast prototyping and proof-of-concept delivery for enterprise clients, owning projects end-to-end.

2017 – 2020
Senior Back-End Engineer & Scrum Master
@ Artos Systems Β· London

First engineer at the startup. Built a scalable Layer 2 solution for high-volume Ethereum transactions and grew an agile team from 1 to 6.

2016 – 2017
CTO & Co-Founder
@ Mobillity / Mespo Β· London

Co-founded a fintech startup building a white-labelled financial-advisor chatbot. Raised Β£100K, built a team of 7, and an 800+ customer waitlist before launch.

2012 – 2016
Full-Stack Developer
@ PDX Β· Serli Β· London Β· France

PDX β€” sole developer building four fintech web apps end-to-end. Serli β€” apprentice on enterprise and R&D projects with RedHat and Google.

πŸ“„ Download rΓ©sumΓ©

How I Operate

I borrow my operating model from aviation, where high-stakes teams stay safe through discipline rather than heroics. These are the principles I bring to engineering organisations.

🧭

Crew Resource Management

Authority is clear, but any voice can flag a risk. Psychological safety is an operational requirement, not a perk.

πŸ“‹

Structured Briefings

Before we fly, we brief. Shared intent, known risks, clear roles β€” so execution is fast and surprises are rare.

πŸ”

Blameless Debriefs

After every flight, we debrief the system, not the person. Incidents are gifts: the cheapest way to learn.

βš–οΈ

Just Culture

A line between honest mistakes and recklessness. People report freely because reporting is rewarded, not punished.

πŸ“ˆ

Continuous Improvement

Small, compounding gains over heroic rewrites. Measure, adjust, repeat β€” the boring path to high performance.

🌊

Everything Is a Flow

Kanban boards, product delivery, my own to-do list, distributed systems β€” same physics. Little's Law and queueing theory govern all of them: limit work in progress, or wait longer for everything.

Mantras

🏁

Stop starting, start finishing

πŸͺž

How you do anything is how you do everything

🎭

Ego is the enemy

Leader's Tools

Books, methods, and frameworks that shaped how I lead. A living collection β€” I add to it as I discover things that work.

πŸ“š Books

πŸ’¬

Radical Candor

Kim Scott

Care personally, challenge directly. The framework that taught me to give feedback without being a jerk or avoiding hard conversations.

feedback
πŸ—οΈ

Team Topologies

Skelton & Pais

How to structure teams and interactions for fast flow. Changed how I think about Conway's Law and organizational design.

org design
βš”οΈ

Extreme Ownership

Jocko Willink & Leif Babin

Discipline equals freedom. No bad teams, only bad leaders β€” the leader owns everything in their world, no exceptions, no excuses.

ownership
🀝

Never Split the Difference

Chris Voss

Tactical empathy over hard bargaining. "No" isn't a wall, it's the start of the real negotiation.

negotiation
πŸ—£οΈ

Crucial Conversations

Kerry Patterson, Joseph Grenny, Ron McMillan & Al Switzler

Reject the Fool's Choice between honesty and the relationship. Team health shows up in the lag between spotting a problem and fixing it.

communication
πŸ•ΈοΈ

Team of Teams

Gen. Stanley McChrystal

Complex problems need horizontal trust, not more layers of command. Build a team of teams, not a bigger hierarchy.

org design
🎯

The Coaching Habit

Michael Bungay Stanier

Ask "What do you want?" before offering advice. Raising someone's TERA Quotient does more for a team than any answer I could give.

coaching
πŸ”₯

The Phoenix Project

Gene Kim, Kevin Behr & George Spafford

Every unplanned change is a fire waiting to start. Find the constraint, protect it, and the rest of the system follows.

devops
🧠

Deep Work

Cal Newport

Distraction-free concentration is a competitive advantage. Protect it with routines, not just willpower.

focus

πŸ› οΈ Methods & Frameworks

⏱️

Timelines

The first question I always ask. The timeline defines the complexity of the task β€” and the team's stance, from let-go to democratic to autocratic.

planning
πŸ”„

Scrum & Kanban

Certified in both. Scrum for structured sprints, Kanban for continuous flow. The context leads the choice.

agile
🎯

OKRs

Objectives and Key Results done right. The art is picking 2-3 objectives that force tradeoffs, not 15 that say yes to everything.

goals
🀝

1:1 Templates

A good 1:1 has a rhythm: personal check-in, career growth, blockers, feedback. I keep a shared doc per direct report β€” never take notes in secret.

people
πŸ“‹

RFC Process

Write before you build. A lightweight RFC culture catches bad designs in hours, not sprints. Template: Context, Proposal, Alternatives, Decision.

tech
πŸ”

Retrospectives

The most underrated ritual. Whether we're there to optimise the team's ways of working, to celebrate, or just to vent and name the problems β€” it's never wasted time.

teams

My Book

How I Planned My Wedding with Scrum
Published 2022

A practical (and genuinely funny) guide to applying agile methodologies outside of software. If Scrum can survive a wedding, it can handle your project. With a foreword by Mike Cohn.

Read it on Amazon β†’

Tech Rōnins

Archived Β· 2021–2023

Decoding technical leadership, culture, and innovation. Co-hosted with Pierre Feray-Ferrand. The show is on hiatus, but the back catalogue lives on.

πŸŽ™οΈ Leadership Chronicles

Managing teams, fostering innovation, and the art of technical leadership.

πŸ›οΈ Culture Quests

Building and assessing engineering culture that survives hypergrowth.

βš–οΈ Work-Life Balance

Lead by example: take your holidays. Protecting teams from burnout.

πŸ“– Tech Team Tales

Real-world stories and case studies from the trenches.

πŸš€ Startup Sagas

Scaling, pitfalls, and building a resilient tech foundation.

🀝 Social Creatures

Hiring, promotions, 1:1s, performance reviews β€” people management deep dives.

🎧 Listen on Spotify

Get in Touch

Always happy to chat about engineering leadership, crypto, or what's playing on your playlist.