About • Joanis “John” Allushi

Full-stack product engineering, with an applied AI focus.

I specialise in high-performance apps and user-centred platforms across web and mobile. My work spans Flutter, Node.js, React, NestJS, data-intensive systems, rigorous QA, and applied AI engineering—from RAG pipelines and vector search to document intelligence. I have delivered software across fintech, edtech, medtech, art and digital media, automotive, construction, and government contexts.

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Experience

Products, platforms, and systems across industries.

Work history is presented from the verified July 2026 experience record.

Feb 2025 – present • Thessaloniki

bbv Greece (bbv Software Services AG)

Software Engineer

Professional software engineer serving multiple clients on advanced web applications.

  • Full-stack engineering for client work, including the ongoing Simplex 2.0 engagement.
  • Professional applied AI work with RAG, vector search, LLMs and classifiers, speech recognition, and speaker diarization.
TypeScriptReactNode.jsPythonQdrantAmazon Bedrock

Apr 2024 – present

ArtVolt

Mobile Application Developer (contract)

Product, platform, and analytics work across a two-sided art ecosystem.

  • Modernised an outdated Flutter codebase, fixed critical issues, and added location scanning, notifications, remote configuration, VIP booking, video, and news features.
  • Registered and active users grew 4× against a 25% forecast.
  • Stabilised ArtVolt for Business batch uploads and added location metadata for stronger queries, data quality, and exhibitor self-service.
  • Upgraded ArtVolt for Collectors, added responsive artwork UI, updated the free-trial payment flow, and worked directly with end users.
  • Built analytics reporting that contributed to ArtAthina renewing its contract for another year.
  • A CMS news workflow increased in-app article click rate by 20%.
FlutterDartPythonAngularFirebaseBigQueryLooker Studio

Apr 2022 – Jan 2025 • Athens

Woli Fintech

Full Stack Developer

Banking and financial-education products for children, teenagers, and their parents.

  • Built the internal administration dashboard across Node.js, Flutter web, MySQL, authentication, permissions, and financial/communications integrations.
  • Enabled customer support to triple throughput and gave compliance and marketing teams dedicated operational tooling.
  • Built Woli Gift from scratch; the revenue-generating product was used by about 40% of the active user base.
  • Built the Woli Education reward feature, doubling engagement among ages 8–12 and supporting more than 1,000 reward transactions.
  • Centralised KPIs in Looker Studio and BigQuery, reducing investor-pitch preparation and informing two new subscription plans.
  • Founded the Maestro end-to-end testing project for release stability.
Node.jsExpressFlutterReactMySQLBigQueryMaestro

Jun 2022 – Jul 2023 • US / remote

Khyria

Back End Developer (contract)

Backend work for a menopause health toolkit in FemTech and MedTech.

  • Built dynamic notifications and personalised article delivery from questionnaire and smart-device data.
  • Worked with product, marketing, and the medical advisory board on delivery intervals and content formats.
  • The system passed internal testing; the company became defunct before a public launch.
NestJSTypeScriptPostgreSQLTimescaleDBRedisOneSignal

Jan 2021 – Feb 2022

GetItParts

Full-Stack Developer, MVP builder

A car-parts marketplace concept and mechanic network built as an end-to-end MVP.

  • Solo-built the mobile app, website, and CMS in roughly one year.
  • Designed catalogue, wishlist, Stripe checkout, order tracking, and a roughly 2.5 million-document Cloud Firestore database.
  • The product received positive investor feedback but did not launch because of funding and pandemic timing.
FlutterFirebaseCloud FirestoreStripe

Skills

Breadth where it helps, depth where it matters.

Product work covers implementation, data, quality, cloud delivery, and the AI systems now becoming part of everyday software.

Product engineering

TypeScript / JavaScriptNode.js / ExpressNestJSFlutter / DartReactAngularPythonJavaRESTgRPCSocket.io

Applied AI

RAG architecturesEmbeddingsVector searchQdrantLoRA fine-tuningPrompt engineeringAmazon BedrockHuggingFaceollamaLLM integrationDocument parsingWhisperpyannote

Data & product insight

PostgreSQLMySQLTimescaleDBFirestoreMongoDBRedisBigQueryGoogle AnalyticsLooker Studio

Quality, cloud & delivery

TDDJestMockitoMaestroDockerGCPAWSFirebaseGitHub / GitLab CI/CDScrumKanbanCode reviewPair programming

Background

Education, certification, and languages.

EducationBE Computer Engineering, International Hellenic University2018–2022
CertificationCertified ScrumMaster®Valid through May 2027
LanguagesGreek and Albanian (native), English (fluent, ECPE C2)

An updated personal CV is being prepared. For a current profile, email contact@joanisallushi.com.

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