Backend Engineer (Python) Job at Babel Profiles (Madrid)

Python Backend Software Engineer

Join our Ledger Recover team as a talented Senior Software Engineer and play a k...

Location

France , Paris

Salary:

Not provided

Ledger

Expiration Date

Until further notice

Requirements

Proficiency in Python 3 with experience in frameworks like FastAPI, coupled with a solid understanding of security principles (cryptography, secure system design)
Proficient in secure code development and testing using pytest, with knowledge of infrastructure tools like AWS, Kubernetes, and Helm
Experience with security-focused QA processes, ensuring system resilience
Strong problem-solving skills and a security-first mindset, with excellent communication and collaboration abilities
Full professional proficiency in English
A passion for innovation and secure technology development
Familiarity with microservice architecture concepts

Job Responsibility

Design, develop, and maintain secure backend services using Python and FastAPI for the Ledger Recover product
Implement and enhance testing frameworks with pytest to ensure robustness and security of code
Collaborate with the hardware team to integrate software with HSMs and other security devices
Build and maintain cloud infrastructure using AWS, Kubernetes, and Helm, ensuring high availability and security compliance
Enhance the security posture of the Ledger Recover system, including implementing best practices for cryptographic operations
Support quality assurance processes, identifying vulnerabilities and addressing potential threats

What we offer

Equity: Employees are the foundation of our success, and we award stock options so you can share in that success as we grow
Flexibility: A hybrid work policy
Social: Annual company outing for Ledgerdary Days, plus frequent social events, snacks and drinks
Medical: Comprehensive health insurance policy offering extensive medical, dental and vision care coverage
Well-being: Personal development, coaching & fitness with our dedicated partners
Vacation: Five weeks of paid leave per year, in addition to national holidays and rest & relaxation (RTT) days
High tech: Access to high performance office equipment and gadgets
Transport: Ledger reimburses part of your preferred means of transportation
Discounts: Employee discount on all our products

Fulltime

SDET QA Automation Engineer - Backend Python BDD CI-CD

Lead technical and business testing team members in preparation for and executio...

Location

India , Pune

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

8-12 years Quality Assurance (QA) experience in the Financial Service industry
Experience in Agile, BDD and Dev Ops testing methodologies
Strong experience in API testing using various tools
Proficiency in SQL
Working experience of Mongo DB, API testing
Strong UNIX, Shell, Perl, Python scripting experience
Detailed-oriented, high level of intellectual curiosity and strong sense of ownership
Demonstrated ability to multi-task effectively and work against tight deadlines
Good business acumen and the ability to connect analytics with business decisions
Strong analytical skills with hands on experience driving testing strategy

Job Responsibility

Lead technical and business testing team members in preparation for and execution of test initiatives
Participate in requirements, design reviews with Product, Business Analysts and Development teams
Perform requirements reviews and traceability analyses to assess test coverage
Oversee test execution initiatives, adhering to test schedule and key milestones
Perform test execution and provide clear and concise test progress reporting
Monitor QA activities, test results, defects, root cause analysis and identify areas needing improvement
Recommend and lead continuous improvement initiatives

Fulltime

Senior LLM Backend Engineer

We are looking for a Senior Backend Engineer with a strong focus on Large Langua...

Location

Spain

Salary:

Not provided

Bark

Expiration Date

Until further notice

Requirements

Extensive production experience with Python in backend engineering
Proven experience integrating LLMs into applications via APIs or SDKs
Strong experience building and maintaining APIs for LLM-based features
Strong experience building and maintaining event-driven workflows
Strong experience building and maintaining business logic that consumes AI outputs
Strong experience building and maintaining integrations with 3rd party AI/ML platforms
Solid SQL and NoSQL experience (especially in AI data pipelines)
Production experience with Docker, ideally with Kubernetes or AWS Fargate/ECS/EKS
Experience deploying and maintaining AI services in cloud environments
Strong organisational skills and ability to deliver in a fast-paced, product-focused environment

Job Responsibility

Work with product managers to understand user needs and translate them into AI-powered functionality
Design and build APIs, services, and workflows that integrate LLMs (both proprietary and open-source)
Implement prompt engineering, RAG pipelines, and model fine-tuning where required
Optimise AI inference performance, scalability, and cost-effectiveness
Ensure AI features meet high standards for security, reliability, and maintainability
Collaborate with other engineers to integrate AI features seamlessly into the wider system
Stay on top of emerging LLM technologies and best practices, running experiments and sharing knowledge across the team

What we offer

Fully remote working
Personal annual L&D Budgets with 600€ to spend on your development
Being at the forefront of an industry with new and exciting problems to solve

Fulltime