Software Engineer - Python (Advanced)

Alignerr; España; Remote; EUR 62,000 - 123,000; Part time

Job summary

Alignerr is seeking an advanced Python engineer to work on real-world AI software challenges. Design, build, and review production-grade Python, optimize data workflows, and contribute to scalable AI systems in a fully remote, flexible hourly contract.

You will transform ambiguous requirements into robust solutions, analyze structured data, craft efficient SQL, and collaborate with clients to deliver measurable impact. This role offers 10–40 hours per week and ongoing project opportunities.

Qualifications

• 4+ years of professional software engineering experience.
• Advanced proficiency in Python with clean architecture and performance optimization.
• Experience analyzing structured datasets.
• Strong SQL skills with data validation.
• Prior consulting or client-facing experience.

Responsibilities

• Design, implement, and optimize advanced Python code for production-level systems.
• Analyze and manipulate structured datasets to support engineering and modeling workflows.
• Write and optimize SQL queries to extract, transform, and validate data.
• Review, debug, and improve existing codebases for performance, reliability, and maintainability.
• Translate ambiguous or high-level requirements into concrete, well-reasoned technical solutions.
• Apply consulting-style thinking to evaluate tradeoffs and recommend best-fit approaches.
• Document assumptions, decisions, and implementation details with clarity and precision.
• Evaluate AI-generated code and analytical outputs for correctness and quality.

Job description

About The Role

What if your Python skills could directly shape how the next generation of AI systems thinks, reasons, and writes code? We're looking for advanced Python engineers to work on real-world engineering and data challenges — reviewing, building, and improving the software that powers cutting-edge AI applications.

Software Engineer – Python (Advanced)

About The Role

What if your Python skills could directly shape how the next generation of AI systems thinks, reasons, and writes code? We're looking for advanced Python engineers to work on real-world engineering and data challenges — reviewing, building, and improving the software that powers cutting-edge AI applications.

This is a fully remote, flexible contract role built for experienced engineers who love solving hard problems. If you thrive on clean architecture, data-driven thinking, and translating ambiguous requirements into elegant solutions, this is for you.

• Organization: Alignerr
• Type: Hourly Contract
• Location: Remote
• Commitment: 10–40 hours/week

What You'll Do

• Design, implement, and optimize advanced Python code for production-level systems
• Analyze and manipulate structured datasets to support engineering and modeling workflows
• Write and optimize SQL queries to extract, transform, and validate data
• Review, debug, and improve existing codebases for performance, reliability, and maintainability
• Translate ambiguous or high-level requirements into concrete, well-reasoned technical solutions
• Apply consulting-style thinking to evaluate tradeoffs and recommend best-fit approaches
• Document assumptions, decisions, and implementation details with clarity and precision
• Evaluate AI-generated code and analytical outputs for correctness and quality

Who You Are

Must-Have

• 4+ years of professional software engineering experience
• Advanced proficiency in Python — clean architecture, performance optimization, and debugging
• Strong hands-on experience with real-world data analysis and structured datasets
• Solid SQL skills, including complex queries, transformations, and data validation
• Prior consulting or client-facing experience, with the ability to navigate open-ended, ambiguous problems

Nice to Have

• Experience working with large, messy, or unstructured datasets
• Familiarity with backend systems, REST APIs, or data pipelines
• Comfort evaluating or auditing AI-generated code and reasoning
• Strong written communication skills and sharp attention to detail

Why Join Us

• Work on cutting-edge AI projects alongside leading research labs
• Fully remote and flexible — work when and where it suits you
• Freelance autonomy with the structure of meaningful, task-based engineering work
• Make a direct, tangible impact on how AI understands and produces code at scale
• Potential for ongoing work and contract extension as new projects launch