Senior Full-Stack Engineer, TypeScript, AI

eventfirst

. Build and improve features across the frontend, backend and database from product discussion through release and ongoing maintenance .

Posted 11/2/2026full-timeRemote • GermanySeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building and maintaining production web products, with a strong focus on AI features and workflows. Proficient in designing data models and ensuring software security, reliability, and maintainability while effectively communicating user needs into practical solutions.

Highest-signal resume keywords

Production Web Product DevelopmentAI Agent DevelopmentTypeScript and React ExperienceCoding Agent VerificationData Model Design

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Frontend DevelopmentBackend DevelopmentDatabase ManagementPrompt EngineeringTool CallingFailure HandlingRegression TestingArchitectural Decision MakingQuality EvaluationUser Interface Design

Soft Skills

Clear CommunicationIndependent Work

Tools & Technologies

TypeScriptReactNext.jsTailwind CSSDrizzleNeonVercel

Industry Keywords

AI WorkflowsOpen-Source ContributionsSoftware SecurityMaintainabilityProduction Monitoring

Tech Stack

Tools & technologies

JavaScriptNext.jsReactTypeScript

About the role

Key responsibilities & impact

Build and improve features across the frontend, backend and database from product discussion through release and ongoing maintenance
Work with event experts and founders to understand user needs and shape practical solutions
Build and evaluate AI features and workflows
Define good results, investigate failures and turn real examples into regression tests
Make architectural decisions with the team
Keep the product secure, reliable and maintainable
Use coding agents where helpful and review and verify the resulting software

Requirements

What you’ll need

Experience shipping and maintaining production web products across frontend, backend and database
Experience building AI agents or workflows using prompt engineering, tool calling and failure handling
Experience building evaluations from representative examples to measure quality, investigate failures and test improvements
Ability to design clear data models and choose simple architecture
Experience using coding agents and verifying their output for correctness, security and maintainability
Ability to turn user needs into practical features with clear, usable interfaces
Ability to work independently and communicate clearly in spoken and written English
Experience with TypeScript and React strongly preferred
Experience operating AI agents or workflows in production, including monitoring quality, managing latency and cost, and recovering from failures
Experience with Next.js, Tailwind CSS, Drizzle, Neon or Vercel
Experience turning domain experts' knowledge into software
Contributions to open-source projects through code, documentation, bug reports or reviews
Full-time availability
Contract arrangement depends on location; freelance contract may apply where the employer has no legal entity
English is the working language

Benefits

Comp & perks

Fully remote work
Competitive compensation
Substantial ownership and visibility into product decisions
Work alongside senior engineers and experienced founders
Direct feedback from event experts
Opportunity to shape the product, architecture and engineering culture