Projects
56 projects across employment, consulting, personal and open-source work. Filter by theme, type, industry, role or keyword to find the work that's relevant to you.
THEME
TYPE
INDUSTRY
ROLE
Atala PRISM (IOHK) — SDK, protocol & wallet
★ IdentityCrypto 0-to-1
Designed the SSI second-layer protocol, first cross-platform SDK, and wallet.
ScalaScala.jsBitcoinCardanogRPCbrowser extensions
Employment · IOHK · 2018–2022
Buy-crypto-with-cash / ACH platform
★ FintechCrypto Legacy restoration & rescueCost optimization
Rescued a downed buy-crypto-with-cash platform (CTO-level) with almost no handover.
restored a downed production system in under 24h despite minimal access and handover.
JavaSpring BootJavaScriptReactMySQLJPADigitalOceanBitcoincryptographyACHOnfido (KYC)HashiCorp Vault
Consulting · Private Company
codepreview.io
★ DevTools Founder0-to-1
Founded and led a product providing preview environments for web apps.
ScalaScala.jsSlinkyReactRustPostgresAWSPulumiAnsiblenginx
Consulting · Wiringbits · 2022–2023
Flow2b / Tlayen
★ Enterprise/ERP Legacy restoration & rescueMigration
Rescued and migrated the most complex system I've worked on (ERP with a per-project DSL).
customer restoration <48h (first) / <1 week (rest); migration ~1 customer/week over a few months.
ScalaAkkaOrientDB
Consulting · Flow2b / Tlayen
geminilive4s
★ AIDevTools Open sourceReal-time0-to-1
Open-source JVM library over Gemini's Live API (streaming audio + function calling).
Scalafs2cats-effectGemini Live API
Open-source · Personal / open-source · 2024–2025 github.com
OpenSnowcat
★ DataDevTools Open sourceLegacy restoration & rescue
Handled the fork of Snowplow's components into OpenSnowcat after its license change.
Scala
Open-source · Wiringbits / community · 2024 github.com
PayPal — Smithy schema registry
★ FintechDevTools 0-to-1
One source of truth for data models across Scala/TS/Go, killing model drift.
SmithyScalaTypeScriptGo
Employment · PayPal (via Beyond) · 2026
SiriusXM — AWS cost reduction (80%)
★ MediaDevTools Cost optimization
Cut the team's AWS bill by 80% while preserving throughput.
−80% AWS cost, throughput preserved.
AWS (ECSFargateLambda)Scala
Employment · SiriusXM (via Equal Experts) · 2023–2026
SiriusXM — multi-region notification system
★ MediaData Real-timeHigh scale
Low-latency multi-region notifications at ~20k rps for tens of millions of subscribers.
~20,000 rps; subscriber base in the tens of millions.
ScalaAWS (KinesisSQSDynamoDBLambdaECS)GatlingDataDog
Employment · SiriusXM (via Equal Experts) · 2023–2026
Stakenet / Hydranet
★ CryptoDeFiFintech Real-time0-to-1
Original author & lead of a real-time DEX order book and a Bitcoin block explorer.
ScalaPlayAngularTypeScriptPostgresDigitalOceanBitcoinEthereumArbitrumgethbitcoindAnsible
Consulting · Stakenet / Hydranet hydranet.ai
SwanFinance
★ FintechCrypto Legacy restoration & rescueMigration
Rescued a crypto exchange and migrated it to a stable derived-balance ledger.
ScalaPlayPostgresNode.jsExpressReactcryptographyAnsible
Consulting · SwanFinance
Agriculture traceability platform
AgTechData 0-to-1
Crop traceability with QR-tagged packages, analytics, and per-employee payroll.
ScalaPlayReactPostgresAWSAnsible
Consulting · Private Company
AI-based quiz portal
EdTechAI Legacy restoration & rescue
Teachers build quizzes with AI-assisted grading; led the rebuild's frontend.
ReactTypeScript
Consulting · Private Company
Ailytic
Manufacturing
Manufacturing-scheduling web app; frontend + Java backend.
JavajQWidgetsMySQL
Consulting · Ailytic ailytic.com
Animana browser extension + API
Vet/HealthcareDevTools Legacy restoration & rescue
Rebuilt a browser extension for vet staff, cutting multi-minute tasks to seconds.
TypeScriptVueScalaCask
Consulting · Private Company
Atala PRISM Node (IOHK)
CryptoIdentityData 0-to-1
Designed the initial PRISM Node, a Bitcoin (later Cardano) indexer.
ScalaBitcoinCardano
Employment · IOHK · 2018–2022 github.com
Boardrs
Travel Legacy restoration & rescueMigration
Rescued a legacy snowboarding-trip booking app (deploys + SSR).
ScalaPlayMongoDBReactAnsible
Consulting · Boardrs
CalendaFit
FitnessSaaS 0-to-1
SaaS for gym memberships and classes; led the frontend + admin/staff portal.
TypeScriptReactTailwind
Consulting · CalendaFit calenda.fit
Care Seekers (TekTorch)
Marketplace
Care-worker marketplace (AirBnb-like); built a proxied secure comms system.
JavaJerseyMySQLJPA
Consulting · TekTorch careseekers.com.au
cazadescuentos
Data Founder0-to-1
A startup attempt (like codepreview.io): scrapes retailers to track discounts.
scrapingScala (approx)
Personal · Personal · 2020 github.com
CircleIn
EdTech Reliability & observability
Reliability fixes + testing foundation for a student collaboration SaaS.
ScalaPlayMySQLcats-effectSQSTwilioRedisAWSAnsible
Consulting · CircleIn circleinapp.com
CoachTube
MarketplaceEdTechFintech Migration
Creator course marketplace; led a partial v2 migration and Stripe payments.
ScalaPlayAnormTwirlSvelteAWSRDSStripeAnsible
Consulting · CoachTube coachtube.com
collabuml
DevTools Open source0-to-1
Collaborative PlantUML editor (open source).
TBD
Open-source · Personal / open-source github.com
Cromwell — GCP Batch API support
LifeSciencesData Migration
Added GCP Batch API support to Cromwell after Google deprecated LifeSciences API.
ScalaGCP
Consulting · Wiringbits (end customer: Google / Broad Institute's Cromwell) · 2022–2023 github.com
crypto-coin-alerts
Crypto Open source0-to-1
Rules-based cryptocurrency price alerts (open source).
TBD
Open-source · Personal / open-source github.com
Cybersecurity company — AWS console OCR ingestion
SecurityData 0-to-1
Ingested AWS-console screenshots so you could find anything in a customer account.
KotlinSpring BootPostgresJPAS3SQSTestcontainers
Consulting · Private Company
Cybersecurity company — AWS security-violation CLI
SecurityDevTools 0-to-1
Rust CLI that audits an AWS account for security violations (prowler-style).
Rust
Consulting · Private Company
Cybersecurity company — security analysis (Qualys)
Security Legacy restoration & rescue
Scheduled customer security scans on top of Qualys; recovered an unrunnable codebase.
JavaJersey 2HibernateMySQLTomcatAWS (Elastic Beanstalk)Terraform
Consulting · Private Company
Discord scammer-detector bot
SecurityBots Open source0-to-1
Open-source bot that detects scammers on Discord.
Scala (confirm)
Open-source · Wiringbits / open-source github.com
expense-tracker
FintechAIData 0-to-1
Personal tool: ingest receipts/bank statements into structured expense data.
ScalaPostgresAWS TextractTelegram bot
Personal · Personal · 2025–2026
Government document crawler
GovData 0-to-1
Scraped a government registry, analyzed docs, and alerted customers to changes.
ScalaPlayReactPostgresAnsible
Consulting · Private Company
GuideProtocol
EdTechMarketplace 0-to-1
A publish-and-sell-courses platform (CoachTube-like); led development.
JavaSpring BootReactTypeScriptAWS
Consulting · GuideProtocol
Insurance-industry service (short gig)
Insurance Legacy restoration & rescue
Got an insurance service running; added Play WSClient mutual-TLS auth + critical fixes.
ScalaPlayPostgresmutual TLSAnsible
Consulting · Private Company
Kestrel legacy migration
DevTools Legacy restoration & rescue
Revived Twitter's 2009 Kestrel message queue to run in 2024 (conference talk).
JVM
Consulting · Private Company · 2024 youtube.com
Kueski — Kien Es Kien
FintechData 0-to-1
Auditable RESTful service to flag criminal/politically-exposed persons.
ScalaMySQLPostgreSQL
Employment · Kueski · 2015–2017
Kueski — Traffic Controller
Fintech Reliability & observability
Async service that throttles traffic to a fragile external provider.
Scala
Employment · Kueski · 2015–2017
Kueski 2.0
Fintech High scale
Helped design the main micro-loan app to scale from hundreds to thousands of clients.
ScalaRubyJavaScriptJavaMongoDBMySQLPostgreSQLFinatraAngularJS
Employment · Kueski · 2015–2017 kueski.com
LogoPackage (LP)
CreativeSaaS
SaaS + Adobe Illustrator extensions that generate complete logo packages for designers.
Next.jsTypeScriptPostgresPrismaS3AWS
Consulting · LogoPackage
NFT management platform — cost reduction
NFTCrypto Cost optimizationMigration
Cut a NFT platform's ops cost ~$70k → ~$3k/yr by migrating off a costly API.
TypeScriptExpressNode.jsReactRustSolana
Consulting · Private Company github.com
Oracle — RAC tooling
DataDevTools
Low-level RAC metrics, cluster-reconfig compression, and log compression.
CLinuxBashAssemblerGDBstrace
Employment · Oracle Corporation · 2015
PayPal — ingestion pipeline observability & silent-loss fix
FintechData Reliability & observability
Found a years-old bug silently dropping millions of records/day; added observability.
ScalaApache BeamAirflowGCPDataDog
Employment · PayPal (via Beyond) · 2026
PayPal — shared libraries & build plugins
FintechDevTools Reliability & observability
Killed chronic cross-service dependency conflicts via shared libs and build plugins.
Scalabuild plugins
Employment · PayPal (via Beyond) · 2026
playcodeai
AI Founder0-to-1
AI game-creation playground (chat + playable game); presented at a conference.
AIweb
Personal · Personal
Praxis — ODS (big-data pipeline for a bank)
FintechData 0-to-1
Designed the core of a bank's big-data pipeline + a type-safe Hive/Spark DSL.
ScalaApache SparkHiveHadoopHueYarnOozie
Employment · Praxis · 2017
pull-request-attention
DevTools 0-to-1
GitHub app that routes each PR to whoever must act next.
GitHub app
Personal · Personal
SAC — Juicio En Línea Sinaloa
Gov 0-to-1
Government web app to sue government dependencies fully online.
JavaApache StrutsJSPTomcatMySQLjQuerycryptography
Employment · SAC · 2014–2015
Samsung ARTIK Cloud (IoT)
IoT High scaleReliability & observability
Multi-region IoT cloud: S3 resiliency, LwM2M TCP/TLS, CRDT device whitelisting.
ScalaJavaAkkaPlayMySQLCassandraElasticSearchMongoDBKafkaAWSLwM2M/CoAPCRDT
Employment · Samsung (SSIC) · 2017–2018
scala-js-chrome
DevTools Open source
Scala.js bindings for the Chrome extension API (open source, inherited).
Scala.js
Open-source · Personal / open-source github.com
Self-hosted infrastructure, mail & VPNs (ongoing)
Infrastructure/DevOpsSecurity Reliability & observability
Years of hands-on infra/sysadmin: self-hosted SMTP (Postal + rspamd), VPNs (Algo), cloud.
LinuxPostal (SMTP server + API)rspamdAlgo VPN (WireGuard/IPsec)nginxAnsibleAWSDigitalOcean
Consulting · Wiringbits / various clients · 2019–present github.com
SiriusXM — QA notification slackbot
MediaDevTools 0-to-1
Internal Slack bot letting QA exercise the notification flow (CRUD).
ScalaSlack
Employment · SiriusXM (via Equal Experts) · 2023–2026
SiriusXM — reusable Scala AWS-Lambda template
MediaDevTools 0-to-1
A reusable Scala AWS-Lambda template that sped up and standardized the team.
ScalaAWS Lambda
Employment · SiriusXM (via Equal Experts) · 2023–2026
SiriusXM — Spring Boot 2 → 3 migration
MediaDevTools Migration
Migrated legacy services from Spring Boot 2 to 3, incl. infra deployments.
JavaSpring Boot
Employment · SiriusXM (via Equal Experts) · 2023–2026
SiriusXM — zero-downtime AWS account migration
MediaDevTools Migration
Engineered the foundation for a zero-downtime AWS account migration (~90%).
AWSCDK
Employment · SiriusXM (via Equal Experts) · 2023–2026
Stakenet contract migration (layer-1 → Ethereum)
CryptoDeFi Migration
Led the smart-contract migration from a Bitcoin-based L1 to Ethereum (Olympus fork).
SolidityEthereum
Consulting · Stakenet / Hydranet
twimini-bot
AI Real-time0-to-1
Real-time voice agent connecting Twilio calls to Gemini, built on geminilive4s.
ScalaTwilioGemini Live APIfs2
Personal · Personal · 2024–2025 github.com
wiringbits-scala-newbie-warts
DevTools Open source0-to-1
Linting rules (WartRemover-style) guiding Scala newbies in the Typelevel ecosystem.
ScalaWartRemover
Open-source · Wiringbits / open-source github.com