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Hans SchnedlitzHS

Hans Schnedlitz

Senior Ruby Developer

€640/day
Wien, AT
8-15 years

Average response time: 1 hour

About Hans

Senior / Staff-level Ruby on Rails engineer and full-stack developer. I build, repair, and explain production software — from solo-built apps for startups to fifteen-year-old monoliths. Strongest in backend and full-stack Rails (GraphQL/REST APIs, background processing, data modelling) with hands-on infrastructure experience (Docker, Kubernetes, observability). Interested in long-term contract work on production Rails systems where reliability and maintainability matter.
  • German

    Native or bilingual

  • English

    Native or bilingual

Can work on-site
Wien (up to 50km)

Experience

  • map-it
    Contractor
    PUBLIC SECTOR
    July 2025 - Today (1 year)
    Wien, Austria
    Solo-built the core of map-it, a civic-tech platform for participatory neighbourhood mapping, now in live pilot with city administrations, associations, and local initiatives. Built structured "mapping call" campaigns where residents place geo-located ideas, complaints, and proposals directly on a map of their neighbourhood. Implemented spatial queries with SQLite/SpatiaLite and map rendering with MapLibre, plus image uploads and multi-step campaign workflows. Built a highly interactive, native-feeling mobile UI (bottom-sheet interactions) with Inertia and Svelte 5, since most residents arrive via a shared link on their phone, and an admin interface for organisations using the default Rails stack (Hotwire, server-rendered views).
    Ruby on Rails Svelte JavaScript SQLite
  • MeisterTask
    Staff Engineer
    SOFTWARE PUBLISHING
    October 2018 - June 2024 (5 years and 8 months)
    Wien, Austria
    Backend and full-stack engineering on MeisterTask, a task-management product (Kanban boards, dashboards, automations, integrations) used by millions of users. Designed and evolved GraphQL and REST APIs serving native iOS, Android, desktop, and web clients. Led the migration of production infrastructure to Kubernetes and introduced OpenTelemetry-based observability (distributed tracing, structured telemetry) across the stack. Built and maintained background-job infrastructure with Sidekiq, did performance work and refactoring of aging subsystems, and sustained product engineering against SLA and enterprise constraints, including ongoing code review and mentoring.
    Ruby on Rails GraphQL Kubernetes Docker
  • Sakya Research Center
    Maintainer
    RESEARCH
    January 2021 - Today (5 years and 6 months)
    Wien, Austria
    Sole maintainer of an academic research platform, live since 2012, indexing 3,000+ records (persons, places, sources, images, and e-texts) for scholars of Tibetan Buddhism. Responsibilities include Rails version upgrades, dependency patches, and server administration, alongside performance work, bugfixes, regular data backups, and occasional schema changes. The work emphasises careful, incremental refactoring of legacy code where a full rewrite would lose institutional knowledge, keeping a long-lived research tool current, reliable, and habitable for its users over many years.
    Ruby on Rails PostgreSQL

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Education

  • BSc Software Engineering
    TU Wien
    2020
    BSc Software Engineering
  • Mathematics
    TU Wien
    2013
    Mathematics

Skill set

Categories