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barryhennessy

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barryhennessy
·hace 3 meses·discuss
It’s actually great to see a living example of how sensitive users* are to what to a lay person would look like a small amount of downtime.

The fact that we’re all talking about it, and not at all surprised, is a great example we can take when making the case for more 9’s of reliability.

* well, very technical power users.
barryhennessy
·hace 4 meses·discuss
SEEKING WORK | Berlin, CET | Remote: Yes | Full-time freelance or 20h+/week

Experienced Go architect (15 years; Zalando, StreamElements). I untangle fragile microservice architectures and make them boring again.

I’ve modernized fragmented microservices for hyper-growth companies, migrated Riak → Postgres under hard deadlines, and turned chaotic legacy systems into stable, scalable platforms.

Recent impact

Overhauled business-critical messaging systems for high-volume, low-latency workloads. Simplified/retired 11+ microservices, reduced latency, and improved observability — enabling a hyper-growth partner launch ahead of competitors.

Led discovery, design, and delivery of an auditable, multi-source, high-throughput inventory tracker — giving an e-commerce client immediate stability and a scalable foundation for years of growth.

Migrated an auth database from Riak → Postgres under a hard deadline (World Cup traffic). Zero downtime and smooth scaling through peak load.

Ideal clients

Berlin/EU scale-ups with distributed systems complexity — fragile microservices, data-intensive platforms, or legacy architecture that's become a liability.

€100+/hr retainer. Fixed-bid projects also considered. Available now for 3–6 months.

The usual stack

Go, Postgres, Kafka/NATS, Kubernetes, AWS/GCP

Get in touch

Email: [email protected]

Portfolio/CV: barryhennessy.com
barryhennessy
·hace 5 meses·discuss
As an industry we really need a better way to tell what’s going g where than:

- someone finally reading the T&Cs

- legal drafting the T&Cs as broadly as possible

- the actual systems running at the time matching what’s in the T&Cs when legal last checked in

Maybe this is a point to make to the Persona CEO. If he wants to avoid a public issue like this then maybe some engineering effort and investment in this direction would be in his best interest.
barryhennessy
·hace 5 meses·discuss
Ok, so far it sounds impressive.

But I’ve seen a lot of similar claims - just open LinkedIn for a second - and I always come back to the same questions:

- What value has been delivered?

- How much did you spend?*

- How long did it take _all told_?

I know you made a context management db. But if your argument is that AI is the future like this then that seems a somewhat self-referential proof.

What value has been delivered/products built outside of tooling to build products?

I’m aware you probably can’t be 100% open here - IP and all - but I feel it would go a long way to reinforcing your arguments the more concrete you can be.

* points for being up front about the 1000 per engineer minimum. But there’s still the human cost and actual token cost here