Senior Software Engineer (Scala & Python)

Contract: B2B
Rate: 150-160 zł/h net + VAT depending on skills and experience
Location: Remote within the EU
Duration: 6+ months, with the possibility of long-term cooperation
Start: ASAP
Project: Backend engineering project focused on developing and maintaining a SaaS platform and expanding its AI-powered capabilities.

Key Technologies/Areas

• Scala

• Python

• Backend development

• REST APIs

• SaaS platforms

• CI/CD

• Automated testing

• Nice to have: AI and LLM integrations, ElasticSearch, AWS, Azure, or GCP

Project Overview

You’ll join an existing engineering team as a Senior Software Engineer, contributing to the development and maintenance of backend services for an established SaaS platform.

The role combines Scala and Python development. Scala is a core technology used within the existing platform, while a significant part of the day-to-day development will be carried out in Python.

You will also support the expansion of AI-powered functionality across the product, including integrations with internal and external AI services, LLM platforms, transcription solutions, and other machine-learning-based capabilities. This is a hands-on role for an experienced backend engineer who can work independently, contribute to architectural and technical decisions, and build reliable, scalable, production-ready solutions.

Responsibilities

• Develop, maintain, and extend backend services using Scala and Python.

• Design and implement scalable functionality across an existing SaaS platform.

• Build and expand AI-powered features within the product.

• Integrate internal and external AI services through APIs, including LLM-based platforms and similar tools.

• Support the maintenance and further development of existing Scala-based services.

• Develop new backend functionality primarily in Python.

• Design reliable and maintainable integrations between platform services and external systems.

• Write clean, testable, and well-documented production code.

• Participate in technical discussions, code reviews, and architectural decisions.

• Ensure the quality, scalability, performance, and security of implemented solutions.

• Work closely with software engineers, product teams, and other technical stakeholders.

• Support CI/CD processes and modern software development workflows.

• Troubleshoot production issues and improve the stability of existing services.

Requirements

• At least 7 years of professional software development experience.

• Strong production experience with Scala.

• Strong proficiency in Python and experience developing production-grade backend applications.

• Hands-on experience building and maintaining backend services.

• Ability to work effectively across both Scala and Python codebases.

• Strong understanding of software engineering best practices.

• Experience with automated testing, version control, code reviews, and CI/CD.

• Good understanding of scalable and maintainable software architecture.

• Ability to independently analyze technical problems and propose practical solutions.

• Strong communication skills and the ability to collaborate within an international engineering team.

• Fluency in Polish and an advanced level of English (B2/C1)

Nice to have

• Commercial experience working with LLMs or generative AI solutions.

• Experience integrating AI services or AI models into production systems.

• Experience building integrations with external AI platforms through APIs.

• Experience with AI-based transcription, speech-to-text, or related technologies.

• Experience with ElasticSearch.

• Experience with public cloud AI services available in AWS, Azure, or GCP.

• Experience developing or maintaining PHP applications.

• Previous experience working on SaaS products.

• Understanding of AI service scalability, monitoring, performance, and cost optimisation.

Why join us?

Rite NRG is a vibrant outsourcing technology company driven by the Right People. We are dedicated to empowering businesses through innovative software solutions. We focus on building strong partnerships and providing top-notch software solutions that drive real business growth. Our business model revolves around collaboration and delivering impactful results for our clients.

Join us and be part of a team where great minds, Right Energy, and strong partnerships come together to shape the future of technology!

• Stable, long-term, full-time collaboration.

• Remote work within the EU and flexible working hours.

• High engineering culture with a focus on growth and learning.

• Opportunity to work on a mature SaaS platform and production AI solutions.

• Multinational teams.

• Benefits: Private medical care, Multisport card, and workation opportunities.