Portrait of Julien Deray, Director of Engineering at SwissBorg

Julien Deray

Director of Engineering at SwissBorg. An engineering leader who still builds. AI is turning big engineering orgs into small, dense teams led by people who ship β€” so I build the agents and automation myself, and bring what fourteen years of fintech and crypto taught me: hiring, org design, regulators, and aviation-inspired operational discipline.

πŸ“ Paris, France

↓ Explore

My Journey

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

Right hand to the Head of Engineering across 8 teams, managing 2 Engineering Managers and the Infra team. Leading the AI modernisation of how we build β€” specs, code generation, review, agentic triage in Slack β€” with guardrails fit for a regulated industry, and automating the manager's admin myself.

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“„ RΓ©sumΓ© on request

Building with AI

I think the next generation of engineering leaders will write code again. These are the things I build to find out what small, AI-augmented teams can really do.

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, AI in engineering teams, crypto, or what's playing on your playlist.