Python Engineer

Job description

About the project

We’re looking for a hands-on, self-sufficient Python Engineer to join a long-term product collaboration with an established European investment company. The company has been successfully managing multi-billion euro assets for 30+ years and is now actively investing in AI-driven innovation.

You'll work closely with a highly professional internal team — analysts, portfolio managers, and risk experts — to bring modern, impactful solutions into their everyday operations. The engagement spans several parallel sub-projects, so you'll be able to switch context and contribute across different workstreams within the same collaboration.

Job requirements

What You’ll Be Working On

• AI-powered internal platform already in production.

• Integration of LLM models for internal use.

• Decision-making automation workflows.

• Chat-based assistants for analysts and project managers.

• End-to-end ownership: from architectural design to production deployment.

You’ll be deeply involved in technical decision-making and have a direct impact on the business, with no intermediaries — close collaboration with the client team is part of your daily routine.

Key Responsibilities

• Design and implement scalable backend APIs using Python and AWS Lambda.

• Develop and manage OpenAPI specifications for all serverless APIs.

• Build and maintain data models and schema migrations using PostgreSQL on AWS RDS.

• Set up and maintain infrastructure-as-code using Terraform for AWS resources (e.g., ALB, RDS, Lambda, S3).

• Collaborate with DevOps to establish smooth CI/CD pipelines using GitLab CI/CD.

• Use Amazon S3 for storing and serving assets and data.

• Work with Amazon Bedrock to integrate generative AI services (e.g., document processing, summarization).

• Apply best practices in version control, testing, and security.

• Participate in code reviews, architectural planning, and agile team ceremonies.

Requirements

• 3+ years of hands-on experience with Python 3.

• Experience building APIs using FastAPI or similar Python web frameworks.

• Experience in developing serverless applications using AWS Lambda.

• Familiarity with API Gateway and/or ALB for routing and service integration.

• Solid understanding of PostgreSQL, with experience deploying to AWS RDS.

• Knowledge of Terraform for infrastructure provisioning and management.

• Familiarity with OpenAPI/Swagger for API contracts and documentation.

• Experience with GitLab and Git workflows for version control and CI/CD pipelines.

• Understanding of S3 use cases in web applications.

• Comfortable working in agile environments and taking initiative to solve problems.

Nice to Have

• Experience with Amazon Bedrock or similar AI/ML platforms.

• Knowledge of monitoring and logging tools within AWS.

• Previous experience in the fintech or asset management domain.

• Awareness of security practices for serverless apps (IAM roles, API authorization, secret management).

Stages of Interview

• Interview with a Recruiter (45 minutes).

• Internal technical interview (1,5 hour).

• Interview with the client (1 hour).

What we offer

• Long team focus: we create an environment of transparent communication, and minimal bureaucracy, which leads to long-term relationships.

• Development of niche expertise: we are working in several niches, such as FinTech, healthcare, and logistics. Therefore, our employees can develop their own expertise in these domains.

• Continuous learning: we create employee development plans / personal roadmaps /quick promotion processes.

• Internal career development: 80% of our current executives were promoted to those positions within S-PRO. We encourage initiative. If a person wants to set new challenges and grow, we will definitely support them.

Benefits and perks

• Flexible schedule.

• Remote work model.

• Medical insurance.

• Paid vacations.

• Paid Sick-leaves.

• Paid State holidays.

By submitting your application for this position, you consent to the processing of your personal data for recruitment purposes in accordance with applicable data protection laws. Detailed information regarding the processing of personal data can be found at the following link: Сandidate Privacy

Requires 3+ years of Python experience, FastAPI or similar frameworks, AWS Lambda, PostgreSQL/AWS RDS, Terraform, OpenAPI, GitLab, S3, and agile development experience.

Key Responsibilities

• designing APIs
• building platforms
• integrating models

Skills & Tools

Python, AWS Lambda, OpenAPI, PostgreSQL, Amazon RDS, Terraform, Application Load Balancer (ALB), Amazon S3, GitLab CI/CD, Amazon Bedrock, FastAPI, API Gateway, Swagger, GitLab, AWS, IAM

Job Details

• Category: Software Development
• Seniority: Mid Level
• Commitment: Full Time
• Workplace: Remote — Warsaw, Mazowieckie, Poland
• Languages: English

Benefits

• Generous paid time off

About S-PRO

A technology company delivering software solutions across fintech, healthcare, and logistics. — Industry: Information Technology