CareerPlan

Senior Fullstack Engineer

SpainFull-time2026-10-08 → 2026-11-10
On-site

Core

Building an AI-native GTM platform for modern B2B teams, combining prospecting, enrichment, intent signals, AI research, and outreach.

Role type

Senior Fullstack Engineer

Builds

High-throughput backend workflows, integrations, AI-powered features, and polished web experiences for sales teams.

Domain

B2B SaaS / Sales Technology / AI

Deliverable

production ML models | product features

Required skills

TypeScript, Node.js, React, PostgreSQL, API design, async workflows, web architectures, debugging, autonomous work

Preferred skills

Temporal, distributed systems, microservices, Redis, Elasticsearch, Kafka, UI performance optimization, CI/CD, early-stage startup experience

Technologies

Temporal, React, TypeScript, Node.js, PostgreSQL, Redis, Elasticsearch, Kafka, GitHub Actions

Responsibilities

Ship complete functionality across backend and frontend; build scalable services, async workflows, and data pipelines; develop responsive React + TypeScript applications; optimize performance and debug complex issues; collaborate with Product and Design; shape engineering practices and architecture.

Seniority

Senior, hands-on IC