Hello! I'm Søren Johanson.
I help early-stage B2B SaaS startups make the right technical decisions - before mistakes become expensive.
Delivered straight to your inbox every Wednesday.
Søren's swift mastery of new technologies, backed by his strong software background, and his friendly, engaging communication make him a standout professional.
- René Passmann
Building your SaaS is challenging - one wrong move can cost you thousands
When launching a B2B SaaS, everything happens at once. Infrastructure choices, security risks, and compliance challenges pile up, all while you're trying to build and ship your product. It's easy to feel pulled in every direction.
But making the wrong decisions now could cost your startup hundreds of thousands of euros in development time, compliance fines or lost deals.
Are you facing any of these challenges?
- Worried about security gaps or compliance risks?
- Unsure if your infrastructure is built to scale?
- Struggling to implement secure development practices?
- Need expert technical guidance without hiring a full-time CTO?
How I can help
I provide technical strategy and security guidance for B2B SaaS startups, ensuring that you:
- Avoid costly mistakes by assessing your infrastructure, security posture, and compliance risks before scaling.
- Implement security best practices and fix critical vulnerabilities before they become a problem.
- Make the right technical decisions on cloud infrastructure, CI/CD, and access controls from day one.
- Get on-demand technical leadership when you need it - without the overhead of a full-time CTO.
With battle-tested advice from someone who has helped startups scale from MVP to millions of users, you'll gain the confidence to move forward without the risk of costly mistakes.
Here are 4 ways I can help your B2B SaaS startup:
1. Weekly Newsletter
Stay ahead in B2B SaaS with weekly, no-fluff insights on scaling securely and efficiently. Learn how to avoid costly infrastructure mistakes, strengthen security, and stay compliant as you build and grow your SaaS.
From technical strategy and MVP development to hiring your first engineers and making smart infrastructure choices, get practical, actionable advice.
Subscribe below to stay one step ahead.
Delivered straight to your inbox every Wednesday.
2. SaaS Infrastructure & Compliance Audit
Is your tech stack setting you up for success - or leaving you open to security risks and compliance headaches?
Before scaling your SaaS, you must ensure your infrastructure is robust, compliant, and primed for growth. This high-level assessment uncovers hidden security gaps, evaluates your Secure Software Development Lifecycle (SDLC) practices, and tackles compliance challenges (like Schrems II/GDPR) head-on - so you can scale with confidence.
What you'll get:
- Infrastructure & Cloud Audit - Evaluate architecture, vendor lock-in risks, and capacity for future growth.
- Compliance & Data Privacy Check - Assess how EU regulations affect your use of AWS, Supabase, Google Cloud, and other critical vendors.
- Secure SDLC Review - Identify gaps in your development pipelines - version control, CI/CD, and code reviews - that could lead to vulnerabilities.
- Immediate Security Gap Analysis - Pinpoint issues like misconfigured IAM, weak encryption, or unprotected endpoints that need urgent fixes.
- Actionable Recommendations - Receive prioritized next steps to strengthen both technical foundations and compliance posture.
Perfect for:
SaaS startups (Pre-seed to Seed) looking for a quick, expert-led checkup before making major technical or hiring decisions. This audit gives you clarity on what's at risk - and how to fix it before those risks become costly problems.
Starting from 1.795,00€ excl. VAT
Søren provided clear, strategic guidance and valuable resources, making complex challenges easier to navigate. His mentoring and communication skills are a real asset for anyone seeking advisory support.
- Darrell Roberts
3. Security & Risk Mitigation
Worried about data breaches or compliance failures taking down your SaaS?
Take action before they become headlines. This hands-on engagement turns the insights from your audit into real, technical solutions - closing security gaps, hardening your infrastructure, and putting essential processes in place to keep your data safe and your customers happy.
What's included:
- Technical Remediation Roadmap - Step-by-step instructions on fixing top vulnerabilities.
- Hands-On Guidance - Pairing with you and your dev team to reconfigure your cloud setup, secure CI/CD, and set best practices.
- Security & Privacy Foundations - Basic policies (incident response, data retention) + staff training on how to avoid common pitfalls.
Perfect for:
SaaS startups (Seed to Series A) who've identified critical risks and want a technical expert to drive real changes - fast.
Starting from 6.995,00€ excl. VAT
4. Advisory Retainer
Need a trusted technical advisor on call - but not ready for a full-time CTO?
Founders and CTOs at early-stage startups face critical decisions every day. One wrong move can set you back months. This monthly retainer ensures you have immediate, 24/7 access to strategic guidance whenever you need it - without the overhead of a full-time hire.
What you'll get:
- On-Demand Technical Guidance - Get expert input on scaling, security, and infrastructure decisions before they become costly mistakes.
- Security & Compliance Oversight - Ensure your infrastructure, policies, and processes remain compliant as your startup grows.
- Proactive Risk Monitoring - Regular check-ins to identify and mitigate new security vulnerabilities or compliance gaps before they impact your business.
- Vendor & Architecture Reviews - Help selecting the right cloud providers, SaaS tools, and tech stack components to avoid lock-in and future migration headaches.
- 24/7 Support for Urgent Issues - Immediate access to expert advice on security incidents, compliance escalations, and high-stakes technical decisions.
Perfect for:
Startup founders and technical leaders who want expert backing for high-stakes decisions but don't need day-to-day coding or hands-on development.
Starting from 9.975,00 € / month excl. VAT
Note: As a professional courtesy, I offer a 30-day money back guarantee for any advisory services. If you feel like our engagement is no longer mutually beneficial, I will refund 100% of the money, no questions asked.
About
I've spent the last decade building, scaling, and optimising software, helping startups, mid-sized companies, and enterprises turn ideas into successful products. Along the way, I've worked on scalable backend architectures, product launches, and high-impact engineering leadership.
This has included redesigning the backend of an app store to support 50 million users globally and leading engineering efforts at a startup to develop and roll out critical internal products under tight deadlines.
I'm also an active mentor over at the Mentoring Club as well as an active speaker.
If I'm not busy with running my business or mentoring, I build small products. Some notable ones include SquadUtils.org, ProcrastinationTracker.com as well as Headless By Design.