Fullstack Developer

AboutSparkify

• Sparkify is built by Onstruc UG a Berlin-based documentation-software company founded in 2020. Onstruc started out building photo-based documentation tools for the construction trade broadly; about two and a half years ago the team began focusing that experience specifically on electricians teaming up with Wiha a German tool manufacturer with 80 years of history and a genuine fan following in the trade to build the NFC-enabled hardware integration thats now Sparkifys core differentiator.
• Electricians are legally required to document their work photos forms measurement data after every job; Sparkify replaces pen-and-paper and Excel-and-a-prayer with something that works fully offline in the field and turns taking a measurement into a tap by pulling data straight off Wihas testing devices via NFC.
• Live for 120 days were already at 85 clients and roughly 125 seats adding about one new client a day -well financed growing and shipping fast with a small senior team. We are looking for someone to take clear ownership of our web platform now: backend frontend and the production reality in between.

About the role

• You take operational ownership of our production system: PHP 8 / Symfony services and a Vue 3 web client used by electricians every day. You keep the system stable keep billing flowing and work through a concrete prioritized bug and feature backlog end to end.
• This is a full-stack ownership role in the practical sense: no backend feature is done until the UI exists and no frontend flow is complete unless the API data model and operational behavior behind it work properly.
• This is not a greenfield fantasy but it is not a legacy horror either. It is a clear manageable production system with real users real revenue and real momentum. You will not be alone: our infrastructure partner supports the Couchbase layer and you will work closely with our founder whos covering CTO duties directly so the system becomes better documented and easier to own over time.

What Youll Do

• Own the Symfony service fleet: API auth payment notification image and PDF-report services; Symfony Messenger for async jobs
• Own the web client with it: a Vue 3 Vuetify TypeScript SPA using Pinia and Vite
• Ship features end to end across checkout billing workspace admin and documentation flows
• Build data import/export support as new hardware-manufacturer partners join the platform
• Keep billing flowing: Mollie subscriptions webhooks invoices SEPA mandates
• Run and improve production infrastructure: Hetzner servers GitHub Actions CI SSH deploys Cloudflare DNS Pulumi IaC and observability via Sentry Datadog and Grafana
• Work through a real backlog: well-defined bugs missing endpoints data cleanups hardening items and pragmatic product improvements
• Get productive with Couchbase and Sync Gateway which power our mobile sync. Prior Couchbase experience is helpful but not required; our managed-service partners Couchbase engineers support us here

What you bring

• At least 5 years full-stack engineering experience with strong PHP/Symfony comfortable owning production systems and being trusted with them
• Genuinely comfortable with complex nested JSON and document-based data modeling our core datastore is document-based (Couchbase) not purely relational; Couchbase itself isnt required on day one but this general comfort is
• Solid modern frontend skills; our SPA is Vue 3 Vuetify TypeScript and deep Vue experience is ideal
• Strong engineers coming from React Angular Svelte or similar frameworks are welcome if they can become productive in Vue quickly
• Comfortable with Git submodules and a modular multi-service repo structure
• Excellent English spoken and written; it is our working language
• Good German is a plus
• E-commerce or payments experience for example Mollie Stripe or similar is a big plus
• DevOps-capable: comfortable with Linux servers DNS CI/CD and production debugging
• Pulumi/IaC experience is a plus
• Pragmatic direct and able to ship without turning everything into a grand redesign

Compensation and Perks

• A friendly environment with a small team of collaborative and innovative people.
• Competitive salary and compensation package.
• Home-office friendly with an office culture we are actively building and expect people to take part in regularly this is remote-first not remote-only: a weekly in-person day and the teams daily video standup are part of the role not an occasional nice-to-have.
• You will work directly with the founder with fast decisions and very little process theater.
• We cover your equipment (Mac phone and home-office setup) plus a Deutschland-Ticket on top of salary and a supplementary health allowance (600/year).

#LI-JM1
#LI-Hybrid

Thank you for considering this opportunity. Senior Recruiters partner exclusively with Startups and are in direct communication with hiring managers and founding team members.

uses AI-assisted tools as part of our candidate sourcing and screening process. All applications are reviewed by a human recruiter who makes all decisions about which candidates to your application seems like a good fit for the position a real member of our team will contact you soon!