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What I built, and how.

Each case study includes the architecture I actually shipped — not a sanitised version of it.

Screenshot of the CosmicUp.me homepage

CosmicUp.me

2024 — 2026 · Co-founder · Product & engineering

LumaUp sp. z o.o.

Replace seven AI subscriptions with one — 30+ models, 10,000 users, 80% off the inference bill.

10,000
registered users
30+
models available
−80%
inference cost, after context work
Vue.jsNode.jsFirebaseServerlessLLM APIs
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Screenshot of the SeekUp.ai homepage

SeekUp.ai

2025 — 2026 · Product & engineering

LumaUp sp. z o.o.

Point it at one TikTok creator who works, get back ten who work like them.

~5 min
for a shortlist of ~10 creators
up to 1,000
profiles screened per search
4
pipeline stages, ordered by cost
Vue.jsNode.jsAI agentsLLM APIsEmbeddings
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Screenshot of the SociallyMCP.com homepage

SociallyMCP.com

2026 · Founder · Product & engineering

Sole proprietorship

Social media data for your AI, one API key away — no login, no scraping stack.

90+
typed MCP tools
$0 → $500
self-serve tiers
0 logins
social logins needed
MCPTypeScriptNode.jsStreamable HTTPBearer auth
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Screenshot of the CompraSocial.me homepage

CompraSocial.me

2021 — 2026 · Founder · Developer · Operator

LumaUp sp. z o.o.

300,000 orders, run by two people and a lot of automation.

300,000+
orders processed
90%
operations automated
11
social platforms
WordPressPHPVue.jsMySQLMongoDB
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Adobe XDdetailed prototypesOne repositoryAngular · TypeScriptCapacitorJSnative shell, same appWebresponsive · accessibleiOSCapacitorJSAndroidCapacitorJS1 → 3platforms per fixEvery fix lands once and reaches all three targets.

ELA — Poland's graduate outcomes portal

2019 — 2020 · Angular developer · Frontend lead

OPI-PIB

One codebase, three platforms, a recurring budget line removed.

1 → 3
codebase to platforms
2
published mobile apps
public sector
accessibility obligations
AngularCapacitorJSTypeScriptAdobe XDA11y
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guided claim flow · one question at a time01Incidentwhen and where02Vehiclepolicy match03Evidencephotos · documents04Reviewconfirm and submitValidate before the next step opensspecified so a claim can be resumed Guidewire · Gosu structured claim data

Insurance claims self-service portal

2018 · Junior Java developer · Frontend

Sollers Consulting
NDA

Turning a phone call into a guided flow.

self-service
claim reporting
frontend
my scope
insurance
sector
AngularTypeScriptGuidewireUX/UIInsurance
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The end client is covered by a confidentiality agreement; the company I did the work for is named.

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