Senior Backend Developer (Delta Team) - Barcelona

Biorce; Barcelona; On-site; EUR 70,000 - 100,000; Full time

Benefits offered by this job

MacBook provided

Hybrid work model

Medical, dental, vision insurance

Job summary

Biorce, a Healthtech innovator, is seeking a Senior Backend Developer (Delta Team) to build and scale our internal software infrastructure from Barcelona. You will own Leadro’s backend, APIs, and data flow, while integrating with GTM tools and external systems.

The role demands ownership, architecture, and mentorship to drive fast, reliable delivery. The candidate should have strong Node.js/TypeScript expertise, NestJS, and hands-on experience with cloud platforms (GCP preferred).

Qualifications

• 6+ years in software development and architecture with production ownership.
• 0

Responsibilities

• Design, build, and own Leadro's core backend services, from data models to APIs.
• Build and maintain deep third-party integrations across our GTM stack.
• Ship LLM-powered features: agentic workflows, enrichment pipelines, and intelligent automation.
• Set technical direction for the backend, lead design reviews, and raise the bar on code quality through rigorous code review and clean code practices.
• Mentor engineers and help the team deliver fast without breaking things.

Skills

Node.js

TypeScript

NestJS

Data modeling

Mentoring engineers

API design

LLM workflows

Education

CS degree or equivalent

Tools

PostgreSQL

MySQL

BigQuery

REST

GraphQL

Docker

Docker Compose

CI/CD

GCP

Confluence

Jira

Job description

About the company

Biorce is a pioneering Healthtech company dedicated to revolutionizing drug development through the power of AI. We are passionate about accelerating medical advancements and improving patient outcomes.

Our team comprises seasoned clinical research professionals, data scientists, and AI experts, working collaboratively to bridge the gap between cutting-edge technology and real-world clinical needs.

With an unwavering commitment to revolutionize healthcare, we envision a world where all patients benefit from accelerated and cost-effective access to treatments. Biorce is poised to redefine the landscape of healthcare, shaping a future where innovation and accessibility converge for the betterment of humanity.

About the role

Following our successful expansion into the U.S. and continued growth across Europe, we are seeking a Senior Backend Developer (Delta Team) to help drive our Operations function from our Barcelona hub.

This person will play a critical role in building Biorce’s internal software infrastructure, starting with our CRM Leadro. Leadro is Biorce's in-house AI-native CRM and the system of record for our commercial engine: LLM-driven workflows, data orchestration across our GTM stack, and deep third-party integrations. You'll own backend systems end to end and shape the architecture as we scale.

Who We’re Looking For:

The ideal candidate has 6+ years in software development and architecture, with real ownership of production systems. Someone with a track record of taking ambiguous problems from design through documentation to delivery, and experience mentoring engineers and driving technical decisions. This person should be able to own backend systems end to end and help the team deliver fast without breaking things.

Key Responsibilities:

• Design, build, and own Leadro's core backend services, from data models to APIs
• Build and maintain deep third-party integrations across our GTM stack
• Ship LLM-powered features: agentic workflows, enrichment pipelines, and intelligent automation
• Set technical direction for the backend, lead design reviews, and raise the bar on code quality through rigorous code review and clean code practices
• Mentor engineers and help the team deliver fast without breaking things

Must-haves

• 6+ years in software development and architecture, with real ownership of production systems
• A track record of taking ambiguous problems from design through documentation to delivery
• Experience mentoring engineers and driving technical decisions
• CS degree or equivalent practical experience
• Expert-level Node.js and TypeScript in production backend systems, including NestJS
• Strong data architecture skills: complex data modeling, relational databases (PostgreSQL, MySQL), and warehouses like BigQuery
• API design and development (REST, GraphQL), including building and maintaining third-party integrations
• Hands-on experience shipping LLM-based workflows or agentic systems
• Modern engineering practices: code review culture, clean code principles, CI/CD, Docker and Docker Compose, and automated testing
• Experience with major cloud providers (GCP, AWS, Azure) — GCP is our primary platform
• Proficiency with tools like Confluence and Jira

Nice-to-Haves

• Distributed and event-driven patterns: Redis, RabbitMQ, Kubernetes, serverless
• Authentication, authorization, and identity management (OAuth, SSO, RBAC)
• Python
• Experience with React, HTML/CSS, Bootstrap is a plus.
• Prior work on data-heavy SaaS (CRM, RevOps, or analytics tooling)

Why Join Us?

• A dynamic work environment with an international team, where collaboration and diversity thrive.
• Work alongside top talent, united by a shared purpose and committed to making a real impact.
• Get equipped with a MacBook to enhance your productivity and work experience.
• Benefits package designed to support you and your family’s overall well-being.
• Comprehensive medical, dental, and vision insurance options beginning on the first of the month following hire.
• Hybrid work model offering flexibility to balance your professional and personal life.
• Company events to celebrate achievements and enjoy time together.
• Our office is pet-friendly! You’ll likely be greeted by a few wagging tails upon arrival.

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