2.786 Ofertas de Senior Python Engineer en España

Senior Python Engineer

Ayer

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Job Title: Senior Python Engineer

Job Type : Permanent

Job Mode: Remote only for applicants within Spain, should be open to travel to Madrid atleast once in a month


Skills / Responsibilities:


Python Skills experience, Expert knowledge of libraries like pandas, requests, SQLAlchemy, and ideally Snowpark.

Snowflake Expert: Deep understanding of Snowflake architecture (Virtual Warehouses, Micro-partitions, Snowpipe, and Tasks).

SQL Proficiency: Ability to write and optimize complex analytical queries.

API Architecture: Proven experience working with RESTful services, JSON, and authentication protocols.

● Version Control: Professional experience with Git (GitHub/GitLab).

● Cloud Infrastructure: Familiarity with AWS, Azure, or GCP (specifically storage services like S3 or Blob Storage).

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Senior Python Engineer

Pozuelo de Alarcón Tata Consultancy Services

Publicado hace 13 días

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Descripción Del Trabajo

Are you a Senior Python Engineer seeking a new interesting challenge?

If your answer is yes, it’s your lucky day so keep reading — it can be just what you're looking for!


WHAT WILL YOU DO?

We are looking for a dynamic, proactive and talented person to join our team and perform the following tasks:

  • Design, develop and maintain high-quality Python applications using Python 3.11+.
  • Apply Test Driven Development (TDD) practices, mainly using Pytest.
  • Collaborate with stakeholders to translate business needs into clear technical requirements.
  • Work with data structures, data analysis concepts and problem-solving approaches.
  • Contribute to and improve CI/CD pipelines.
  • Work in Linux environments, using terminal tools for development and troubleshooting.
  • Ensure code quality, reliability and maintainability through best engineering practices.
  • Collaborate and deliver within an Agile / Scrum environment.


WHAT TECHNOLOGIES WILL YOU USE?

  • Python 3.11+
  • Pytest and Test Driven Development (TDD)
  • CI/CD pipelines
  • Linux (terminal usage)
  • Object-Oriented Programming and design patterns
  • SQL (basic understanding)
  • Agile / Scrum methodologies


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Freelance- Senior Python Engineer

Pozuelo de Alarcón Tata Consultancy Services

Publicado hace 13 días

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Senior Python Backend Engineer

Publicado hace 8 días

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Descripción Del Trabajo

Joining a fast-growing European logistics tech company building the infrastructure that makes last-mile delivery smarter, greener, and more reliable. This is a backend engineering role at the heart of a critical platform migration, embedded in an empowered product squad.


The challenge

The PUDO platform processes thousands of daily parcel events across Spain and Portugal on a large, battle-tested Java + Oracle codebase. The mission: keep that system stable and reliable while progressively migrating it to a modern Python + PostgreSQL stack. This is not a rewrite from scratch. It requires technical judgment, respect for what works, and the ability to plan and execute a migration without disrupting live operations.


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Senior Software Engineer (Python)

Catalonia Q-tech

Publicado hace 13 días

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Descripción Del Trabajo

I’m currently looking for a tech professional who’s passionate about building high‑quality products that improve people’s lives… and their pets’ lives too!

This is an international, fast‑growing tech company with a strong mission and values, focused on creating safe, personalized digital experiences.


Location : Barcelona (Poblenou area)

Work model : Hybrid (office on Mondays & Thursdays)

Contract : Permanent, full‑time


What they’re looking for

  • Someone aligned with a values‑driven mission and a strong sense of responsibility.
  • Experience building customer‑facing products with a strong UX and quality mindset.
  • Ability to work with loosely defined requirements, collaborate cross‑functionally, and drive technical initiatives forward.
  • Motivation to keep growing as a software engineer and to share knowledge with the team.
  • Strong mentoring mindset and passion for learning.


Technical requirements

  • 7+ years of experience as a professional software engineer.
  • Strong, proven knowledge of Python or another backend language.
  • Experience with ReactJS and/or React Native
  • Good understanding of relational databases and schema design.
  • A strong commitment to automated testing, code quality, and engineering best practices.


Nice to have

  • Experience with Django or other Python‑based frameworks.
  • Interest or experience in React Native.
  • Familiarity with CI/CD tools.


Soft skills

  • A true team player.
  • Very detail‑oriented when it comes to design and user experience.
  • Comfortable working with agile methodologies.
  • Analytical thinker who enjoys tackling new challenges.
  • Fluent in English (international team).
  • A love for pets


What’s on offer

  • Long‑term incentive plan.
  • Private medical insurance and pension plan.
  • 25 days of paid time off.
  • Flexible compensation (meal allowance, transport, childcare).
  • Gym membership and wellness benefits.
  • Financial support for pet adoption.
  • Flexible working hours.
  • Dog‑friendly office
  • Team events and a great working environment.
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Senior Software Engineer (Python / React)

Publicado hace 13 días

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Senior Backend Engineer (Python / FastAPI)

Publicado hace 19 días

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Descripción Del Trabajo

At Roche you can show up as yourself, embraced for the unique qualities you bring. Our culture encourages personal expression, open dialogue, and genuine connections, where you are valued, accepted and respected for who you are, allowing you to thrive both personally and professionally. This is how we aim to prevent, stop and cure diseases and ensure everyone has access to healthcare today and for generations to come. Join Roche, where every voice matters.
**The Position**
**Who We Are**
**At Roche Diagnostics Solutions (RDS)** , our mission is clear: to diagnose earlier, develop faster, and personalize treatment because every patient is unique. Within **Computational Science & Informatics (CSI)** , we are the bridge between our origin and our future, shaping the next era of human health through precise, data-driven diagnostics and precision medicine.
We excel in delivering rigorous, clinically actionable data analysis across our diagnostics portfolio, believing that advancing computational methods and informatics solutions is essential to harnessing dynamic human health data. By listening closely to patients and physicians, and leveraging digitization and cutting-edge technologies, we work collaboratively to turn insights into impact.
This shared spirit creates an environment where ideas grow, new approaches are trialed, and competitive products reach patients faster-ultimately realizing the DIA 10-year vision and our One Roche ambitions so that everyone can access personalized healthcare solutions.
**The Opportunity**
We are looking for an experienced Backend Python Engineer to build robust, scalable APIs and services that power our digital products in the life sciences sector. Working closely with our Frontend/UX team and Data Scientists, you will design the backend infrastructure required to process, manage, and serve complex bioinformatics and machine learning data.
In this highly collaborative role, you will tackle challenges ranging from optimizing database queries for massive datasets to architecting cloud-native solutions on AWS. We value engineers who are comfortable exploring complex data structures, establishing clean API boundaries, and ensuring high reliability as we scale our platforms to support critical scientific innovation.
**Key Responsibilities:**
+ Design, build, and maintain high-performance, asynchronous backend services and robust RESTful APIs.
+ Architect, deploy, and manage scalable and secure cloud infrastructure, utilizing Infrastructure as Code (IaC) principles.
+ Design efficient database schemas, manage complex data relationships, execute seamless migrations, and ensure performant query optimization for massive datasets.
+ Build and maintain data pipelines to ingest, normalize, and process large volumes of structured and unstructured scientific and bioinformatics data.
+ Champion engineering excellence by writing clean, testable code, implementing comprehensive automated testing, and maintaining reliable CI/CD pipelines.
+ Partner directly with the UX/Frontend team to establish seamless API integrations, and collaborate with Data Scientists to bring machine learning models into production workflows.
**Who You Are**
You are a proactive, collaborative software engineer who thrives on solving complex backend challenges. You possess a strong analytical mindset, are passionate about clean API boundaries, and excel at transforming data infrastructure to drive meaningful progress.
**Qualifications & Skills**
**The Must-Haves:**
+ 5+ years of software engineering experience, with Python as your primary language.
+ Strong software engineering fundamentals, including robust API design and experience building and scaling RESTful systems.
+ Solid understanding of relational databases, data modeling, schema migrations, and query optimization.
+ Proven experience building, deploying, and managing scalable infrastructure in cloud environments, ideally utilizing Infrastructure as Code (IaC).
+ A strong focus on code quality, automated testing, and maintainability within CI/CD pipelines.
+ Demonstrated ability to make progress in ambiguous environments, taking ownership of problems end-to-end-from understanding user needs to shipping production-ready solutions.
+ Tech Stack Alignment: Hands-on experience with, or a strong foundation to quickly adapt to, our core stack: FastAPI, PostgreSQL, SQLAlchemy, Alembic, AWS (S3, Aurora, Fargate, Lambda, CDK), pytest, and NumPy.
**The Nice-to-Haves:**
+ Domain knowledge or a strong interest in the life sciences sector, specifically Sequencing, PCR, Bioinformatics, or digital healthcare.
+ Direct experience working with AWS HealthOmics or building data pipelines for genomic/biological data.
+ Background in data-heavy or AI-integrated product architectures, including an interest in how AI/ML systems behave in production.
+ Previous experience working within large, globally distributed enterprise environments (e.g., Pharma, MedTech).
_At Roche, we embrace emerging innovations, like cloud-native infrastructure and AI, to enhance the patient journey. If you are ready to make a meaningful impact on patients and healthcare systems worldwide through cutting-edge technology, this is the place for you. Let's create a healthier, brighter future for all._
*** This is an on-site position and no relocation assistance is provided.**
**Who we are**
A healthier future drives us to innovate. Together, more than 100'000 employees across the globe are dedicated to advance science, ensuring everyone has access to healthcare today and for generations to come. Our efforts result in more than 26 million people treated with our medicines and over 30 billion tests conducted using our Diagnostics products. We empower each other to explore new possibilities, foster creativity, and keep our ambitions high, so we can deliver life-changing healthcare solutions that make a global impact.
Let's build a healthier future, together.
**Roche is an Equal Opportunity Employer.**
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Senior Backend Engineer (Python or OOP)

Pozuelo de Alarcón E-Frontiers

Publicado hace 9 días

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Descripción Del Trabajo

E-Frontiers – We help top tech talent find opportunities in leading product and scale-up companies across Europe. We make sure candidates have a great experience and get the information they need to make the best career decisions.


We are currently working with a fast-growing international fintech , seeking a Senior Backend Engineer to join their core systems team. This is a key role where you’ll work on the platform’s multi-currency accounting and FX systems – the backbone of the product.


What you’ll do:

  • Develop and maintain scalable, reliable backend systems that power key financial operations.
  • Design new services and improve existing ones, tackling both microservices and legacy code.
  • Collaborate with product and engineering teams to deliver initiatives end-to-end.
  • Mentor colleagues and contribute to the overall technical growth of the team.
  • Take full ownership of the services you build, from development to maintenance.


What they offer:

  • Competitive salary and performance-based bonus
  • Private health insurance
  • Meal vouchers
  • Budget for training and certifications
  • Open-source-friendly culture
  • Hybrid model: 4 days in the office, 1 remote


Your profile:

  • Strong experience building complex backend systems (Python preferred, other OOP languages also welcome)
  • Experience in fintech, banking, or regulated environments is highly valued
  • Comfortable working with legacy code and improving it over time
  • Strong knowledge of APIs, integration, monitoring, and alerting
  • Excellent communication skills in English (international team)
  • Ownership mindset and responsibility over production systems
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Senior Backend Engineer (Python / FastAPI) Scrum Master

Publicado hace 19 días

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Descripción Del Trabajo

At Roche you can show up as yourself, embraced for the unique qualities you bring. Our culture encourages personal expression, open dialogue, and genuine connections, where you are valued, accepted and respected for who you are, allowing you to thrive both personally and professionally. This is how we aim to prevent, stop and cure diseases and ensure everyone has access to healthcare today and for generations to come. Join Roche, where every voice matters.
**The Position**
**Who We Are**
**At Roche Diagnostics Solutions (RDS)** , our mission is clear: to diagnose earlier, develop faster, and personalize treatment because every patient is unique. Within **Computational Science & Informatics (CSI)** , we are the bridge between our origin and our future, shaping the next era of human health through precise, data-driven diagnostics and precision medicine.
We excel in delivering rigorous, clinically actionable data analysis across our diagnostics portfolio, believing that advancing computational methods and informatics solutions is essential to harnessing dynamic human health data. By listening closely to patients and physicians, and leveraging digitization and cutting-edge technologies, we work collaboratively to turn insights into impact.
This shared spirit creates an environment where ideas grow, new approaches are trialed, and competitive products reach patients faster-ultimately realizing the DIA 10-year vision and our One Roche ambitions so that everyone can access personalized healthcare solutions.
**The Opportunity**
We are seeking a Senior Software Developer (C#) for a hybrid engineering (75%) and Scrum Master (25%) role in Spain. You will take ownership of the full software development lifecycle - leveraging your deep expertise in C#, WPF, and .NET 8.0 to build high-performance applications - while also guiding the development team through Agile principles as a servant leader.
If you thrive on navigating ambiguity, utilizing modern AI-supporting tools, and are passionate about both exceptional code quality and team empowerment, this is the perfect opportunity to make a lasting technical impact.
**Key Responsibilities:**
**Engineering & Development (75%)**
+ Software Development Lifecycle: Participate fully in all phases of software development, including feasibility studies, design, development, testing, bug fixing, and ongoing software maintenance.
+ Design & Implementation: Produce unit and subsystem specifications based on software requirements, project architecture, and guidelines. Accurately design and implement code, including the necessary tests to verify functionality against specifications.
+ Team Collaboration & Planning: Self-organizing and proactive in defining, estimating, planning, and implementing work packages within the development team. Provide timely work status updates and issue notifications to the team and project management.
+ Quality Assurance & Review: Conduct thorough reviews and analysis of personal source code and, upon request, the source code of peers. Review application design, functionality, usability, and performance to drive enhancements.
+ Ambiguity Management: Possess the ability to navigate ambiguity and maintain forward progress.
+ Role Type: Function as a Fullstack Developer.
**Scrum Master Responsibilities (25%)**
+ Act as a servant leader for the development team, applying Scrum principles to facilitate progress, resolve conflicts, and increase transparency.
+ Empower the team by removing blockers and applying proven Agile techniques to drive continuous improvement.
**Who You Are**
You are a proactive, collaborative software engineer who excels at navigating ambiguity and taking end-to-end ownership of technical problems. You possess a strong analytical mindset, are passionate about data-heavy infrastructure, and thrive when facilitating team progress and empowering others to succeed.
**Qualifications & Skills:**
**Education and General Experience**
+ Education: Bachelor's degree in Computer Science, IT, or a related technical field.
+ Experience: Generally 7+ years of experience in professional software development.
**Technical Skills**
+ Programming & Frameworks: Highly skilled in C#, WPF, and .NET 8.0.
+ Database Expertise: Experience with SQL Server, including database design and the use of ORMs like Entity Framework.
+ Version Control: Good working knowledge of Git/GitHub.
+ Development Practices: Experience with Agile methodologies (Scrum/Kanban).
+ Tool Proficiency: Good skills in utilizing AI-supporting tools throughout the entire development lifecycle (coding, testing, bug fixing).
+ Environment Setup: Basic experience in defining Build Environments.
+ Excellent English communication and interpersonal skills.
**Scrum Master Skills**
+ First level Scrum Master certification (CSM, PSM I).
+ Experience playing the Scrum Master role for at least two years for a software development team that was diligently applying Scrum principles, practices, and theory.
+ Good skills and knowledge of servant leadership, facilitation, situational awareness, conflict resolution, continual improvement, empowerment, and increasing transparency.
+ Knowledge of numerous well documented patterns and techniques for filling in the intentional gaps left in the Scrum approach.
_At Roche, you'll thrive in a culture that values different perspectives and creates a place of belonging, where we challenge ourselves to excel and achieve strong results, together. Let's create a healthier, brighter future for all._
*** This is an on-site position and no relocation assistance is provided.**
**Who we are**
A healthier future drives us to innovate. Together, more than 100'000 employees across the globe are dedicated to advance science, ensuring everyone has access to healthcare today and for generations to come. Our efforts result in more than 26 million people treated with our medicines and over 30 billion tests conducted using our Diagnostics products. We empower each other to explore new possibilities, foster creativity, and keep our ambitions high, so we can deliver life-changing healthcare solutions that make a global impact.
Let's build a healthier future, together.
**Roche is an Equal Opportunity Employer.**
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Senior Data Engineer | Python · Spark · AWS · Airflow · Lakehouse

VALENCINA DE LA CONCEPCION Shakers

Publicado hace 4 días

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Descripción Del Trabajo

Una firma tecnológica global líder en servicios profesionales busca un Senior Data Engineer para unirse a un equipo con impacto tangible en proyectos de gran envergadura, trabajando con grandes volúmenes de datos a escala de terabytes en entornos Lakehouse sobre AWS.


El reto

Diseñar, desarrollar y mantener arquitecturas de datos escalables y robustas, implementando pipelines eficientes y optimizando el rendimiento en entornos productivos reales. El rol ofrece un camino claro hacia la influencia estratégica y el liderazgo técnico dentro del equipo.


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