Tech that ships.
Deals that close.
No fluff.
Ten years of hands-on engineering and business development, now designing multicloud solutions — the way they should be built and sold: technically honest and efficient.
open linkedin.com/in/jerome-krellOr ask the terminal — ? lists what it knows.
Ten years, one prompt away
Credentials Red Hat certified in containers and Kubernetes.
Key facts
10+
Years Experience
12+
Projects Led
26+
Engineers Mentored
CHF 7.5M+
Project Volume Managed
CHF 1.5M+
Sales Revenue
2M+
App Downloads
What people say
“Jerome is a superstar — he delivers the highest quality of work and brings an exceptional level of responsibility and dedication to everything he does.”
“Jerome always leads by example — I really enjoy working with him. His leadership style is concrete, transparent, and energetic.”
Technically honest, efficient, and free of fluff.
Engineer, business developer, now multicloud architect.
As Solution Architect Multicloud at Bechtle Schweiz AG, I design solutions across hyperscalers, private and sovereign cloud — the way they should be designed and sold: technically honest, efficient, and free of fluff. Before that I developed the cloud business at Elca Cloud Services, from full outsourcing mandates to consulting engagements, bringing hands-on credibility to every offer defense and client conversation.
Earlier, I led blockchain innovation programs at The Hashgraph Association, built classified government systems, and maintained some of Switzerland's largest Oracle databases at SIX Group. Native German speaker, fluent in English.
Engineering. Business.
Same person.
Engineering is the source of truth
Ten years of hands-on systems work — from blockchain microservices and 700+ production databases to classified government projects — now behind every client conversation.
See experienceFrom Code to Contract
Build
Developed blockchain microservices on Hyperledger and Ethereum with Python, Go, and Rust.
JEROME · build
2016–2022 · 2 roles
● swisscom · six
→system engineer
STACK
#hyperledger#ethereum
❯
✦ engineering mode on
Lead
Technical lead for over 10 blockchain projects (250K–750K, 6–12 months).
JEROME · lead
2023–2024 · 1 role
● hashgraph
→lead solution engineer
STACK
#hedera-hashgraph#serverless
❯
✦ architecture mode on
Sell
Developing the cloud business with a focus on workplace, sovereign cloud, consulting services, and full outsourcing mandates.
JEROME · sell
2024–2026 · 2 roles
● elca
→business development manager
STACK
#solution-engineering#sovereign-cloud
❯
✦ business mode on
Architect
Designing multicloud solutions for Swiss enterprise and public-sector customers across hyperscalers, private and sovereign cloud — turning requirements into architectures and offers that hold up in delivery.
JEROME · architect
2026–now · 1 role
● bechtle
→solution architect multicloud
STACK
#multicloud#solution-architecture
❯
✦ architecture mode on
Every role, in order.
Solution Architect Multicloud
Bechtle Schweiz AG
2026 – Present
Designing multicloud solutions for Swiss enterprise and public-sector customers across hyperscalers, private and sovereign cloud — turning requirements into architectures and offers that hold up in delivery.
Multicloud / Solution Architecture / Hybrid Cloud / Sovereign Cloud / Presales
Business Development Manager
Elca Cloud Services
2024 – 2026
Developing the cloud business with a focus on workplace, sovereign cloud, consulting services, and full outsourcing mandates. Leveraging deep technical expertise to deliver efficient, no-nonsense solutions — including on-prem and public cloud AI capabilities.
Solution Engineering / Sovereign Cloud / Applied AI / Workplace / Consulting
Senior Engineer
Development for highly critical classified government projects. DevOps and consulting for enterprise customers (~100K engagements). Led offer defenses for public WTOs and RFPs across insurance, retail, and finance.
DevOps / Government / Enterprise Consulting / WTO/RFP
Lead Solution Engineer
The Hashgraph Association
2023 – 2024
Technical lead for over 10 blockchain projects (250K–750K, 6–12 months). Led development of decentralized applications in serverless and microservice environments. Created startup and enterprise architectures, led technical training sessions, and mentored 6+ interns and junior engineers.
Hedera Hashgraph / Serverless / Microservices / Blockchain
System Engineer
SIX Group Services AG
2020 – 2022
Built a DBaaS platform for Oracle, PostgreSQL, and MySQL with Ansible and Python. Maintained some of the largest Oracle databases in Switzerland with 24/7 support for 700+ databases. Developed and deployed a fullstack Django application on OpenShift. Educated over 20 apprentices in system engineering and application development.
Oracle / PostgreSQL / Ansible / Python / Django / OpenShift
Business IT Specialist (Apprenticeship)
Swisscom AG
2016 – 2020
Developed blockchain microservices on Hyperledger and Ethereum with Python, Go, and Rust. Lead student engineer. Extended PHP applications and automated Windows deployments with PowerShell.
Hyperledger / Ethereum / Python / Go / Rust
Things I build on the side.
All projects
Notes on engineering, leadership and applied AI.
Integrating Langflow into Open WebUI
/integrating-langflow-into-open-webui
A quick proof-of-concept for connecting Langflow workflows to Open WebUI using its pipeline feature — bridging two powerful open-source tools for a local-first AI assistant.2025-05-29 · 5 min read
The Art of Being an Engineering Manager
/art-of-being-engineering-manager
Management isn't about control — it's about trust, energy, and setting up your engineers for success.2023-05-12 · 5 min read
Consume 50% Less Memory with Your Python Objects
/python-slots-memory
How Python's __slots__ can cut your object memory usage in half — and why you should use them in dataclasses too.2022-03-28 · 3 min read