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Case studies, not screenshots

Four builds documented the way a technical interview goes, then the prototypes underneath them.

4 case studies6 experiments
berribot-retrieval-evaluation.app

retrieval eval · run 214

passing

nDCG@10

0.81

+.09

MRR

0.74

+.06

Recall@20

0.92

+.04

bm25 + dense · rrf0.78
cross-encoder rerank0.81
baseline dense only0.72
01In productionJan 2026 – Apr 2026

Berribot Retrieval Evaluation

Turning "the answers feel better" into a number the team could trust.

Applied AI Engineer, owned retrieval quality end to end

nDCG@10 lift
{{NDCG_LIFT}}
Recall@20
{{RECALL_AT_20}}
PythonFastAPIWeights & BiasesBM25Dense embeddings
thirdslate-prase.app

PHYS 216 · unit 4

7 / 12

Which quantity is conserved when the net external torque is zero?

source · lecture 11, slide 6

ALinear momentum
BAngular momentum
CKinetic energy
DMechanical work

verified against source

02LiveApr 2025 – Mar 2026

ThirdSlate

A study platform that reads the actual course, not the internet.

Co-founder and Product Engineer, owned product direction and the retrieval stack

Students served
1,000+
Questions generated
{{QUESTIONS_GENERATED}}
Next.jsTypeScriptPythonFastAPIPostgreSQL
outpay.app

checkout

128.40 USDC

order #A-4417 · base

Merchant wallet
Non-custodial
Gas sponsored
confirm payment

reconciliation

A-4417128.40settled
A-441664.00settled
A-4415212.75pending
A-441439.90settled

export → csv · matches order ledger

03Shipped2025 – 2026

Outpay

Non-custodial USDC checkout that merchants can actually reconcile.

Solo build: product definition, contracts integration, frontend and merchant dashboard

Settlement time
{{SETTLEMENT_TIME}}
Fee vs card rails
{{FEE_DELTA}}
Next.jsTypeScriptBaseUSDCviem
tekkscope.app

trace · task 88f2

4.2s · 6 calls
plan
search.web
search.index
ground
synthesize
stage ground below threshold · flagged in CI

success

0.86

tool prec.

0.91

cost/query

$0.03

04Active build2025 – 2026

Tekkscope

Agentic search infrastructure that fails loudly instead of quietly.

Solo build: architecture, agent orchestration, reliability harness

Task success rate
{{TASK_SUCCESS}}
Tool call precision
{{TOOL_PRECISION}}
PythonTypeScriptLangGraphVector searchRedis

$./next-step

Hiring for a product engineer who can carry the whole thing?

Send me the role and the problem behind it. I will tell you honestly whether I am the right fit.