Senior Full-stack Engineer with AI

Luxoft; Polska; On-site; PLN 250,000 - 380,000; Full time

Job summary

Luxoft is seeking an experienced backend developer to build reusable platform capabilities and data products for researchers. You will collaborate with business teams and architects to translate requirements into robust solutions, while guiding design and peer reviews.

Expect ownership across the SDLC and hands-on coding with modern AI tools such as Claude Code and Copilot. You will contribute to API design, observability, and cloud deployments, leveraging FastAPI and AWS to deliver

Qualifications

• 8+ years of professional software development experience.
• Strong backend development experience with Python with a track record of clean, maintainable, testable production code.
• Production API design & delivery (FastAPI preferred), including versioning, documentation (OpenAPI/Swagger), and observability.
• Cloud experience (AWS preferred) beyond core compute/storage/DB—e.g., eventing, queues, serverless, logging/monitoring, secrets.
• Git workflows and CI/CD pipelines
• Debugging & problem-solving skills with strong ownership across the SDLC.
• AI Acumen
• Experience applying modern agentic approaches (spec-driven development) to software engineering
• Hands-on with Claude Code, VS Code + Copilot, and building or using reusable Al skills
• Al-first repositories - build agent-ready repos - context, skills, conventions & evals baked in
• Quality - agent-generated test & regression suites; identify and guide agents to build quality unit and system test cases

Responsibilities

• Work closely with business team, business analysts, and architects and be able to quickly understand the new requirements and helps to identify the changes to the system.
• Work closely on a day-to-day basis with development team, designers, copy writers and other IT teams.
• The role develops and presents recommendations from analysis of current solution. Assist in design peer reviews, code peer reviews, build and unit test functional enhancements. Identify areas for code refactoring. Review and contribute to development process and procedures to assist in the continual improvement of the development team activities.
• Be able to offer solutions and designs to solve process, project or program issues; provides recommendations to improve the efficiency and effectiveness. Defends a recommendation and can confidently support it.
• Strong organization, communication, and interpersonal skills. Ability to communicate with business and technical audiences and produce design documents suitable for multiple audience types, both client-facing and internal
• Must be able to exhibit technical thought leadership and excellent problem solving ability, with an aptitude for technical innovation.

Skills

8+ years experience

Python backend

FastAPI

AWS

Git & CI/CD

Debugging

AI acumen

Agentic development

Claude Code

VS Code Copilot

Tools

Git

OpenAPI/Swagger

FastAPI

AWS

Job description

Build reusable platform capabilities and data products that let quantitative researchers discover, access, and consume data across a complex, disparate landscape, and then accelerate the good prototypes to production.

Responsibilities

• Work closely with business team, business analysts, and architects and be able to quickly understand the new requirements and helps to identify the changes to the system.


• Work closely on a day-to-day basis with development team, designers, copy writers and other IT teams.


• The role develops and presents recommendations from analysis of current solution. Assist in design peer reviews, code peer reviews, build and unit test functional enhancements. Identify areas for code refactoring. Review and contribute to development process and procedures to assist in the continual improvement of the development team activities.


• Be able to offer solutions and designs to solve process, project or program issues; provides recommendations to improve the efficiency and effectiveness. Defends a recommendation and can confidently support it.


• Strong organization, communication, and interpersonal skills. Ability to communicate with business and technical audiences and produce design documents suitable for multiple audience types, both client-facing and internal


• Must be able to exhibit technical thought leadership and excellent problem solving ability, with an aptitude for technical innovation.

Mandatory Skills Description

• 8+ years of professional software development experience.


• Strong backend development experience with Python with a track record of clean, maintainable, testable production code.


• Production API design & delivery (FastAPI preferred), including versioning, documentation (OpenAPI/Swagger), and observability.


• Cloud experience (AWS preferred) beyond core compute/storage/DB—e.g., eventing, queues, serverless, logging/monitoring, secrets.


• Git workflows and CI/CD pipelines


• Debugging & problem-solving skills with strong ownership across the SDLC.


• AI Acumen


• Experience applying modern agentic approaches (spec-driven development) to software engineering


• Hands-on with Claude Code, VS Code + Copilot, and building or using reusable Al skills


• Al-first repositories - build agent-ready repos - context, skills, conventions & evals baked in


• Quality - agent-generated test & regression suites; identify and guide agents to build quality unit and system test cases

Nice-to-Have Skills Description

• Highly desirable: financial services, specifically fixed income or trading domains experience