Python Engineer

S-PRO; Polska; Hybrid; PLN 200,000 - 280,000; Full time

Benefits offered by this job

Flexible schedule

Remote work model

Medical insurance

Paid vacations

Paid Sick-leaves

Paid State holidays

Job summary

S-PRO is seeking a hands-on Python Engineer to join a long-term collaboration with an established European investment company.

You will design scalable backend APIs, work with AWS Lambda, Step Functions, and Postgres on AWS RDS, and own end-to-end production deployments from architecture to monitoring.

Qualifications

• 3+ years of hands-on experience with Python 3.
• Experience building APIs with Flask or similar Python web frameworks.
• Experience developing serverless apps using AWS Lambda.
• Experience with AWS Step Functions for orchestrating workflows.
• Familiarity with API Gateway and/or ALB for routing.
• Strong PostgreSQL knowledge and AWS RDS deployment experience.
• Terraform for infrastructure provisioning and management.
• OpenAPI/Swagger for API contracts and docs.
• GitLab and Git workflows for CI/CD.
• Understanding of S3 use cases in web apps.
• Agile mindset and initiative in problem solving.

Responsibilities

• Design and implement scalable backend APIs using Python and AWS Lambda.
• Develop and manage OpenAPI specifications for serverless APIs.
• Build and maintain data models and migrations with PostgreSQL on AWS RDS.
• Set up and maintain infrastructure-as-code using Terraform.
• Build and orchestrate workflows with AWS Step Functions.
• Collaborate with DevOps to create CI/CD pipelines using GitLab CI/CD.
• Use Amazon S3 for storing and serving assets and data.
• Monitor production systems and provide ongoing support.
• Follow best practices in version control, testing, and security.
• Participate in code reviews, architecture planning, and agile ceremonies.

Skills

Python programming

API development

Serverless architectures

OpenAPI/Swagger

PostgreSQL

Terraform

GitLab CI/CD

Flask

AWS Lambda

AWS Step Functions

API Gateway/ALB

S3 usage

Agile

Tools

AWS Lambda

OpenAPI/Swagger

Terraform

PostgreSQL

AWS Step Functions

GitLab CI/CD

API Gateway

Flask

AWS RDS

S3

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.

What You’ll Be Working On:

• AI-powered internal platform already in production.
• Decision-making automation workflows.
• Work with financial data, reports, documents, and internal knowledge sources.
• Handling business-critical tasks that directly affect daily operations.
• End-to-end ownership: from architectural design to production deployment, including monitoring and production support.

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.
• Build and orchestrate workflows using AWS Step Functions.
• Collaborate with DevOps to establish smooth CI/CD pipelines using GitLab CI/CD.
• Use Amazon S3 for storing and serving assets and data.
• Monitor production systems and provide ongoing production support.
• 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 Flask or similar Python web frameworks.
• Experience developing serverless applications using AWS Lambda.
• Experience with AWS Step Functions for building and orchestrating workflows.
• 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 SFTP, SharePoint, or other enterprise integrations.
• Experience integrating with PowerPoint, Excel, or working with Power Queries.
• AI is used as part of the daily engineering routine — e.g., for troubleshooting and root‑cause analysis — so hands-on experience with AI tools is a plus, and any background in AI integration is welcome, though not required.
• 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.

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