For our Partner, a mobile gaming company, we are looking for Senior Backend Developer who will join a team making new Puzzle RGP game.

Requirements:
Proficiency in C# programming language is essential.
At least 7 years of experience in professional software development.
Solid experience in network programming.
An understanding of high performance, low latency and high availability.
Deep knowledge of multithreading and concurrency.

Nice to have:
Hands-on experience with public cloud systems, such as GCP or AWS.
Familiarity with messaging infrastructure, including RabbitMQ, Kafka, or similar technologies.
In-depth knowledge of SQL, NoSQL databases, and caching technologies (e.g., Redis).
Practical experience in using Docker and Kubernetes.
Strong background in building and managing large-scale infrastructure.
Excellent communication and interpersonal skills, with the ability to effectively interact with both technical and non-technical stakeholders.
English (B2).
Akka.

Tasks:
As our Partner venture into our new Puzzle RPG game, we’re searching for a Senior Backend Developer to bring ambitious vision to life. This is your chance to be at the forefront of mobile gaming, working on a project with a major IP to deliver AAA-quality experiences. If you’re ready to unleash your technical prowess and impact the future of mobile gaming, we’re eager to welcome you aboard. Let your creativity soar and shape the gaming world with us!

We offer:
An exhilarating role in the mobile RPG gaming industry.
Flexible employment terms: employment contract or B2B.
Work environment of your choice: remote, in-office, or a hybrid model.
Personal and professional development opportunities with a dedicated training budget.
An engaging team environment with numerous company events.
A competitive benefits package tailored to your needs.
A modern office space equipped with everything you need to succeed.

Contact us if You are interested – ittigers@sp.pl

Contact us if You are interested – ittigers@sp.pl

About the Project

We are building a service in the automotive industry, dedicated to both dealers and individual customers, with support for a native iOS application.
The scaling and optimization phase is planned for the upcoming year, and in the long term, the project will follow a continuous development cycle with regular two-week sprints.
All key technical decisions, including framework selection, tools, and architectural patterns, are made collaboratively by the development team.
Specific library choices are made by the Mobile iOS team.

Your Responsibilities

• Design and implement new features in the native iOS application according to product requirements.

• Develop and maintain the application architecture.

• Integrate with a microservices backend via REST/GraphQL and manage WebSocket connections.

• Optimize UI performance and application logic (profiling, memory usage reduction, faster loading).

• Participate in code reviews, pair programming, and maintain code standards (linting, formatting).

• Work closely with UX/UI Designers, Product Owners, QA, and backend teams—participate in requirements analysis, sprint planning, and refinements.

• Document technical solutions.

Our Requirements

• Minimum 3 years of professional experience.

• Proficiency in Swift, Xcode, UIKit/SwiftUI.

• Experience with MVVM/Coordinators architecture.

• REST/GraphQL API integration.

• Memory management and performance optimization skills.

• Knowledge of App Store Connect and provisioning profiles.

• Strong understanding of mobile design patterns.

• Experience working in Agile teams.

Nice-to-Have

• CI/CD pipeline configuration and development.

• Application quality monitoring (Sentry, Firebase Analytics), crash report analysis, and rapid bug fixing.

• Active monitoring of iOS ecosystem trends and proposing technological improvements.

Development Opportunities

• Professional development budget.

• Mentoring.

• External training courses.

• Expert support from technology leaders.

• Salary range: up to 27,000 PLN net (B2B) / 27,000 PLN gross (employment contract).

Benefits

• Subsidized sports activities.

• Private medical care.

• Life insurance.

• Discounts on company products and services.

• Team-building events.

• Employee parking.

Join a Team Shaping the Future of Generative AI!

We are looking for an experienced Forward Deployed AI Engineer who thrives on ownership and solving real-world problems at scale. If you enjoy building end-to-end AI solutions, optimizing data systems, and working directly with customers to implement Gen AI strategies, this is the role for you. You will work at the cutting edge of AI, contributing insights from the field to advance our platform and products, and help expand our footprint into new markets.

Your Role:

• Take full ownership of projects: from understanding customer requirements, mapping them to tasks, and prioritizing, to developing solutions and coordinating with the development team.

• Build, deploy, and maintain end-to-end AI workflows, including Generative AI solutions.

• Design and implement data pipelines to support data science projects, following software engineering best practices.

• Optimize or re-design data architectures to support next-generation products and initiatives.

• Use state-of-the-art technologies to acquire, ingest, and transform large datasets.

• Create and manage data environments in the cloud or on-premise, ensuring information security standards.

• Develop AI-driven automations for internal purposes.

• Collaborate efficiently with technical and non-technical teams in a dynamic, fast-paced environment.

What We’re Looking For:

• 4+ years of production Python experience.

• Experience developing APIs with FastAPI.

• Familiarity with best practices: testing, code formatting, typing, Pydantic.

• Hands-on experience with LLM models, Langchain, Langgraph, RAG systems, and monitoring tools like Langsmith.

• Experience building RAG-based systems and working with vector databases.

• Experience in all phases of software development: from R&D prototyping to production deployment.

• Basic knowledge of Streamlit or other rapid prototyping frontend tools.

• Practical knowledge of CI/CD, Docker, Kubernetes, and cloud platforms (AWS, Azure, GCP).

• Experience with Infrastructure as Code (Terraform).

• Basic understanding of typical ML pipelines.

• Bachelor’s degree in STEM (Computer Science preferred).

• Fluent written and spoken English.

What We Offer:

• Work from anywhere (home office or office).

• 15,000–30,000 PLN/month + VAT (B2B contract).

• 26 days of paid vacation + public holiday equivalent in Poland.

• Benefits tailored to your needs – no one-size-fits-all approach.

• Startup-like atmosphere – minimal bureaucracy, open to experimentation and learning.

• Never work alone – always in a pair on projects.

• A great place for those passionate about data and Generative AI.

Join a Team Changing the World with Data and AI!

We are looking for an experienced Data Scientist who wants to work on projects that truly make a difference. If you are passionate about artificial intelligence, machine learning, and processing large-scale data, this is the place for you. You will collaborate with global clients, including companies in pharma, sports, and technology, building solutions that impact the everyday lives of millions of people.

Your Role:

• Analyze and process complex, diverse datasets from some of the world’s largest organizations.

• Design and deploy Machine Learning algorithms for industrial applications such as predictive maintenance, demand forecasting, process optimization, sales forecasting, marketing mix modeling, churn prediction, and more.

• Develop AI products and solutions for clients as well as for the internal Data Science team.

• Collaborate with experts from various fields to correctly interpret and use data.

• Implement and scale Generative AI and Deep Learning systems in company products and services.

• Build solutions that predict business needs such as demand, orders, schedules, and transportation while minimizing waste and optimizing stock levels.

What We’re Looking For:

• 2–5 years of professional experience as a Data Scientist.

• MS or PhD in Computer Science, Electrical Engineering, Statistics, or related fields.

• Hands-on experience in Machine Learning (regression, classification, supervised and unsupervised learning).

• Strong mathematical background (linear algebra, calculus, probability, statistics).

• Proficiency in Python and object-oriented programming, including libraries such as pandas, sklearn, tensorflow, torch, langchain.

• Ability to lead projects independently and work effectively in cross-functional teams.

• Motivated, proactive, and eager to make a real impact in a fast-paced environment.

• Excellent verbal and written communication and a proven track record of AI/forecasting projects.

Nice to Have:

• Knowledge of R.

• Experience with Generative AI (LLMs, embeddings, prompt engineering, fine-tuning).

• Experience in reinforcement learning.

• Portfolio of projects (GitHub, publications).

What We Offer:

• Work from anywhere (home office or office).

• 15,000–30,000 PLN/month + VAT (B2B contract).

• 26 days of paid vacation + public holiday equivalent in Poland.

• Benefits tailored to your needs – no one-size-fits-all approach.

• Startup-like atmosphere – less paperwork, more experimentation and learning.

• Always work in pairs – never alone on a project.

• A perfect place for data and AI enthusiasts.