20 publicaciones de empleo destacadas de backend developer python, django en barcelona, ct (¡Están contratando!)

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Senior Software Engineer (Python, AI & Data) - B2B SaaS

Remuner
Barcelona, Barcelona provincia

Solicitud rápida

Detalles del empleo

Contrato indefinido | Jornada completa
De 50.000 € a 60.000 € al año

Cualificaciones

CI/CD
NoSQL
Inglés
SQL
AWS
JavaScript
Django
B2B
APIs
ETL
Escalabilidad
S3
SaaS
Inteligencia artificial
Python

Descripción completa del empleo

DESCRIPTION

Barcelona (Hybrid) 4 days in-office, 1 day remote

Full-time

Remuner, a fast-growing B2B SaaS company in the RevOps tech space

About Remuner

We are a fast-growing B2B SaaS company based in Barcelona, building a data-driven platform that helps companies automate and optimize complex business processes.

Our product deals with high volumes of data, non-trivial business logic, and increasingly incorporates AI-driven capabilities to assist users and automate workflows.

What You’ll Do

We’re looking for a senior engineer who goes beyond just shipping features — someone who understands the business behind the product, challenges requirements, and builds solutions that actually solve problems.

You will be part of a small, highly collaborative team with strong ownership and direct impact on the product.

Design and implement backend systems and APIs (Python, FastAPI/Django)
Build and improve frontend features (Vue.js)
Work with data-intensive systems and optimize performance (SQL/NoSQL)
Design and implement AI-powered features and workflows
Work on orchestration of AI agents and integrations with LLMs
Contribute to architecture and technical decisions
Review code and uphold engineering standards
Collaborate closely with product and business stakeholders
Translate business problems into technical solutions
Take ownership beyond implementation, understanding impact and trade-offs
Own features end-to-end: from design to deployment and monitoring

You’ll enjoy this role if

You like working on complex business logic, not just CRUD
You’re comfortable dealing with messy real-world data
You care about performance, scalability, and clean systems
You’re excited about building real AI features, not demos
You naturally think in terms of problems, not tickets
You want to understand why things are built, not just how

How we work

Small team, high ownership, low bureaucracy and real impact on the product
Pragmatic engineering culture (we optimize for impact, not over-engineering)
Direct exposure to product decisions and customers

What we offer

Hybrid Work Policy – Fridays from 9:00–15:00 remote, plus six additional remote days per quarter.
Flexible Working Hours – Shape your schedule with manager's approval to match your productivity.
AI-Native Culture – Opportunity to work on real AI problems (not just demos)
Growth opportunities as the company scales internationally
Young, dynamic, and multicultural team
Office Comforts – Fresh fruit, coffee, and snacks to keep you fueled.
Free Lunch – From Monday to Thursday enjoy free in-office lunch catering
Flexible Compensation – Tax-advantaged spending on transport, restaurants, bars, kindergarten services, plus private health insurance options.

REQUIREMENTS

What We’re Looking For

Must-have

5+ years of experience as a Software Engineer
Strong experience with Python
Experience with FastAPI and/or Django
Solid experience with JavaScript and Vue.js
Strong understanding of SQL databases and query optimization
Experience building production-grade APIs
Hands-on experience building AI-powered features (LLMs, embeddings, etc.)
Experience orchestrating AI agents or multi-step AI workflows (LangChain, LangGraph, or similar)
Strong knowledge of agentic AI workflows (Claude, Codex, etc.), with demonstrated curiosity and continuous learning about the rapidly evolving AI landscape
Strong product mindset: ability to understand business problems and propose solutions, not just execute tasks
Ability to work with ambiguity and think end-to-end across systems
Fluent in English

Nice to have

Experience with AWS (ECS, S3, RDS, etc.)
Experience with data pipelines or ETL systems
Frontend performance optimization experience
Familiarity with CI/CD and modern deployment workflows
Experience in B2B SaaS environments

Solicitud rápida

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