Looking for a job

Luka Fhal

@lukafhal

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I build reliable TypeScript, Node.js, cloud, web, and mobile systems for regulated and operational products.

Germany

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What I'm looking for

I'm looking to build reliable backend, cloud, web, and mobile products where I can partner with product, design, compliance, and operations from architecture through production support.

I've built core trading journeys and shared platform architecture at justTRADE across iOS, Android, and web for stocks, ETFs, derivatives, and crypto.

I design TypeScript and Node.js systems end to end, from APIs and cloud architecture through releases, observability, and production support. At justTRADE, I moved critical trading decisions into a controlled Gateway flow and translated WpHG and BaFin requirements into product capabilities.

At Randstad Digital, I delivered disruption-management products for Deutsche Bahn and Lufthansa Group, including rail network visibility and airline recovery workflows handling 20 to 40 requests per second at peak. I improved backend reliability through stateless, idempotent services and scalable AWS event-driven infrastructure.

I've also built passenger booking operations, fintech credit-plan applications, and trading education campaigns. I work closely with product, design, compliance, and operations to deliver maintainable systems across backend, web, mobile, and cloud.

Experience

Work history, roles, and key accomplishments

Senior Full Stack Engineer

justTRADE (JT Technologies GmbH)

Jan 2025 - Sep 2026 (1 year 8 months)

Built core App 2.0 journeys and shared platform architecture across iOS, Android, and web, covering stocks, ETFs, derivatives, and crypto. Designed backend search and market data capabilities with TypeScript, Node.js, OpenSearch, and Redis, and consolidated validation and trading logic behind a Gateway.

TypeScript Node NestJS AWS Lambda EC2 RDS API Gateway Cloudwatch Redis OpenSearch Docker Zod Server Sent Events React React Native Capacitor Expo Zustand Sentry

Senior Software Engineer

Randstad Digital

Nov 2021 - Sep 2024 (2 years 10 months)

Delivered two enterprise disruption management products for Deutsche Bahn and Lufthansa Group, covering rail network visibility and airline recovery workflows. Optimized Lufthansa Group disruption workflows handling 20-40 requests per second at peak, reducing API latency through backend and data access optimizations.

TypeScript Express MongoDB AWS ECS RDS Elasticache SNS Load Balancing Docker Vue.Js Pinia OpenLayers Angular NgRX RxJS Jest Cypress

Software Engineer

Ardas / Volubus

Feb 2020 - Nov 2021 (1 year 9 months)

Built a booking operations product for passenger reservations, route-based pricing, authorization, and data-intensive administration across web and React Native. Developed backend services with Node.js, Express, PostgreSQL, Redis, and RabbitMQ, with AWS Amplify, Google Maps, and Twilio supporting identity, routing, and customer communication.

TypeScript Node Express PostgreSQL Redis RabbitMQ AWS Amplify React React Native Redux Material UI

Software Engineer

Alchemy

May 2019 - Dec 2019 (7 months)

Developed a credit plan application for a fintech provider in the beauty industry, covering a multi-step customer journey, localization, sorting, pagination, and structured data collection. Worked across the Vue.js front end and Sails.js backend, with PostgreSQL, Redis, and Kafka deployed through Docker and Kubernetes on AWS.

JavaScript Sails.JS PostgreSQL Redis Kafka AWS Docker Kubernetes Vue.Js

Software Engineer

Unified Digital Systems

Mar 2018 - Jan 2019 (10 months)

Modernized campaign delivery for a trading education business by introducing React and Redux alongside its existing WordPress platform. Created reusable page and state patterns that reduced repeated implementation work and made new campaign variations easier to release and test.