Jobs Poland

SBC Performance drives scalable growth for brands ready to expand globally.

Working across eCommerce, health & wellness, education, and entertainment, our team helps brands acquire customers faster and scale across 26+ global markets. We combine data-driven paid media, performance creative, and advanced analytics to turn marketing into a predictable revenue engine.
Trusted by 200+ companies, managing $150M+ in ad spend.

Scale faster. Grow smarter.

Now, we’re looking for a Full Stack Engineer to join our AdTech product team. Someone passionate about building scalable, data-driven systems that power performance marketing automation and analytics.

Key Responsibilities:

• Design, build, and maintain frontend and backend services for the internal AdTech platform.
• Develop Angular (v12+) applications with TypeScript, using reactive patterns (RxJS, Angular Material, reactive forms).
• Implement and optimize state management and change detection for high-performance UI.
• Build and maintain Node.js microservices with TypeScript and RESTful APIs.
• Work with PostgreSQL (TypeORM) and Firestore (NoSQL) for data modeling and storage.
• Implement asynchronous patterns, error handling, and background data processing.
• Integrate with Google Cloud Platform (GCP): Cloud Functions, Firestore, Cloud Storage, and Secret Manager.
• Utilize Redis caching, message queues (RabbitMQ / Pub/Sub), and efficient pagination/filtering for large datasets.
• Collaborate with product, analytics, and QA teams to deliver robust, scalable AdTech solutions.

Requirements:

• 3+ years of experience as a Full Stack Engineer
• Experience with Node.js, Angular (v12+), and TypeScript in production environments
• Strong knowledge of RxJS, Angular Material, and reactive forms
• Experience with state management and change detection optimization
• Experience with microservices architecture and RESTful APIs
• Proficiency with PostgreSQL (TypeORM) and Firestore (NoSQL)
• Understanding of asynchronous patterns and error handling
• Experience deploying and managing Cloud Functions (triggers, logs, monitoring)
• Knowledge of Firestore queries, indexing, and data modeling
• Familiarity with Cloud Storage and Secret Manager
• Docker basics for local development and testing
• Experience with message queues (RabbitMQ or Pub/Sub)
• Redis caching and session management
• Handling large datasets (pagination, filtering, sorting)

Nice to Have

• Experience with ad platform APIs (TikTok Business API, Facebook Graph API, Google Ads API)
• Working knowledge of BigQuery for analytics and data aggregation
• Experience building worker pools and parallel processing pipelines
• Familiarity with CI/CD pipelines and deployment automation
• Understanding of AdTech concepts — campaigns, budgets, pixels, conversions
• Experience with high-volume, real-time data systems

What We Offer

• Hybrid job in Prague/Warsaw or remote
• Competitive compensation
• Flexible working hours: we start our operation day between 9:00 — 11:00 CET
• All necessary equipment
• Paid vacation and sick leaves
• Educational support: reimbursement of certification, training, and a knowledge-sharing atmosphere
• Company events and multiple internal activities
• Open feedback and transparent direct communication

Employment Type Full-time

Preferred Location Poland preferred, other EU countries may also be considered

About the Role

We are looking for a Middle+/Senior Backend Developer with strong expertise in modern C++ development and experience working in Linux-based environments.

The ideal candidate has solid backend engineering experience, is comfortable working independently, and can actively contribute to the team in a production environment.

Tech Stack & Requirements

• Strong experience with C++ 23
• Commercial experience with Qt 5.15
• Good knowledge of Python
• Experience with Azure
• Experience working with Jira
• Strong Linux / Red Hat environment experience
• Experience with Docker / Podman
• Understanding of backend architecture and production environments

Responsibilities

• Develop and maintain backend components and services
• Work with modern C++ technologies and Qt framework
• Participate in system architecture and technical discussions
• Maintain and improve Linux-based infrastructure environments
• Collaborate with cross-functional teams in an agile environment
• Ensure stability, scalability, and performance of backend systems
• Work with containerized environments using Docker/Podman

Candidate Profile

• Middle+ or Senior level specialist
• Strong problem-solving skills
• Independent and proactive mindset
• Good communication and teamwork skills
• Experience working in enterprise or production-grade environments is a plus

About us:

ARRISE sets the benchmark for service delivery and excellence in the iGaming industry. Playing a key role in the success of its clients, which include Pragmatic Play, a brand relied upon by the world’s biggest online casinos for its cutting-edge products, ARRISE helps to deliver exceptional gaming experiences to millions of players worldwide. 

Our global team of talented and driven professionals are shaping the future of iGaming. Headquartered in Gibraltar, we have offices spanning Canada, India, the Isle of Man, Latvia, Malta, Romania, Serbia, Bulgaria, and the UAE, and more exciting destinations on the horizon. 

At ARRISE, we take pride in creating growth opportunities at all levels, constantly investing in our people while welcoming new colleagues and forging strategic partnerships that open new opportunities for success. 

To achieve this, we bet on ourselves. We know that success is a collective effort, and our team is driven by ambition, collaboration, and a shared commitment to grow and succeed—while embracing every step of the journey. 

Be part of the future of iGaming with ARRISERS! See a job that excites you? Apply now, and our friendly recruitment team will connect with you soon. Your journey starts here! 

Responsibilities: 

• Interpret requirements to develop positive and negative test scenarios. 
• Participate in developing of automated testing framework. 
• Develop and maintain test execution steps in an automated framework. 
• Perform manual and exploratory testing as needed. 
• Develop/utilize tools and programs to facilitate testing. 
• Identify, analyze, and troubleshoot problems. 
• Document and communicate test results. 
• Document and track product defects. 
• Adhere to team priorities and work well in an integrated developer/tester environment. 
• Collaborate with cross-functional teams to identify testing requirements and develop test plans and test cases. 
• Analyze and troubleshoot complex software issues in a timely and efficient manner. 
• Work closely with developers to provide feedback on code quality and functionality. 
• Participate in code reviews and provide suggestions for improvements. 
• Develop and maintain technical documentation related to testing. 

Requirements: 

• Experience in manual testing of web applications, web services, API. 
• 3+ years of experience as a QA Automation Engineer with Java. 
• Knowledge of automated testing methodologies (BDD, DDT, etc.). 
• Experience in automated test framework (Selenide/Selenium/Webdriver, etc.). 
• Experience with testing frameworks (JUnit, Test-NG). 
• Experience with API testing using tools like Postman or RestAssured. 
• Good knowledge of Linux. 
• Experience with JMeter, Gatling. 
• Understanding software testing principles and methodologies. 
• Knowledge of SQL and database management. 
• Experience with version control systems like Git. 
• Excellent communication and collaboration skills. 
• Understanding client-server architecture, HTTP/HTTPs basics. 
• Basic knowledge of cloud environments (AWS, Azure, etc). 
• Basic knowledge of Configuration Management/Automation tools (Ansible). 
• Experience with CI/CD tools (Jenkins). 

• Experience with docker. 

   

Company offers: 

• Long-term employment. 
• Flexible timetable. 
• Comfortable working conditions. 
• Paid vacation and sick leaves. 
• English lessons, gym. 
• Competitive salary level. 

ClickDealer is one of the top 5 CPA networks in the world! The company has been in the performance marketing business since 2012, partnering with over 2000 advertisers across 20 main verticals. ClickDealer is headquartered in the Netherlands, spanning over 5 offices across the globe.

We are looking for a highly organized, proactive, and detail-oriented Executive Assistant & Office Manager to join our team. This role combines office management responsibilities with administrative and business support for company leadership.

You will be responsible for ensuring the smooth day-to-day operation of the office, coordinating administrative processes, and supporting company leadership with both business and operational matters. 

Responsibilities:
 

Office Management

• Organizing and ensuring the efficient day-to-day operation of the office.
• Purchasing office supplies, equipment, and consumables.
• Communicating and coordinating with contractors and suppliers.
• Managing office-related expenses and administrative processes.
• Coordinating office maintenance, repairs, and workspace management.
• Organizing courier services, mail, and deliveries.
• Maintaining a comfortable, organized, and productive office environment.
• Organizing internal events, meetings, and team activities.
• Assisting with onboarding and administrative support for employees.

Executive Support
 

• Providing administrative and operational support to company leadership
• Organizing business travel arrangements, including flights, hotels, transfers etc.
• Handling business and personal-related requests.
• Coordinating online and offline meetings.
• Communicating with partners, clients, and internal teams.
• Researching and organizing information upon request.
• Supporting daily operational and administrative activities.
• Managing schedules, priorities, and follow-ups when needed.

Requirements:

• At least 1 year of experience in a similar position
• Polish and English proficiency at B2 level or higher
• Excellent communication skills
• Strong organizational and multitasking abilities
• Attention to detail and high level of responsibility
• Proactive mindset and ability to make independent decisions

The company is ready to offer:

• 20 business days of paid rest.
• Medical insurance.
• 50% compensation for sport activities / sessions with a psychotherapist / courses / English, etc.
• Paid sick leave.
• Sharing experience and knowledge between teams.
• Work from a comfortable office in the center of Warsaw.

BETER is an international product group of companies operating in the B2B segment, specializing in fast sports and esports tournaments and technological solutions for their distribution.

BETER is the exclusive rights holder of tournament products, broadcasting rights, and official data, and ensures their organization through professional tournament operators, including Setka Cup and ESportsBattle, which conduct official sports and esports events in accordance with established standards and under the auspices of relevant federations and regulatory requirements.
 

We are looking for a Data Scientist who is eager to proactively identify opportunities to improve and automate our business using data science and machine learning. You will work within a small, dedicated team of data scientists collaborating closely with backend engineers, other departments, and end users, while being part of a larger ecosystem of trading and technology experts.

In this role, you will design, develop, and optimize predictive models, implement anomaly detection systems, and participate in building production-grade machine learning solutions that directly impact trading and operational processes. You’ll also get hands-on experience with (or apply your existing knowledge of) high-performance architectures, including Kafka, serverless functions, databases, CI/CD pipelines, Kubernetes, and Docker.

Responsibilities:

• Develop and refine mathematical and statistical models for predicting sports and e-sports outcomes.
• Communicate with end users, collect feedback, and build technical solutions based on it.
• Apply machine learning to improve trading strategies, automate workflows, and detect anomalies.
• Proactively identify opportunities to use data science for business optimization and process automation.
• Perform large-scale historical data analysis to generate insights and improve model performance.
• Collaborate with backend engineers to build and maintain production machine learning systems.
• Research and prototype new methods for expanding into new sports and markets.

KPIs for This Role:

• Delivery of production-ready machine learning models and pipelines for trading within agreed timelines.
• Improvement in model accuracy and reliability, measured against established benchmarks.
• Reduction of manual intervention in trading workflows through automation initiatives.

Requirements:

• 5+ years of experience in data science, analytics, or a related field.
• Proficiency in Python (pandas, numpy, scikit-learn, etc.) and working with databases.
• Strong knowledge of statistical modeling, probability, and machine learning techniques (Supervised Learning, Unsupervised Learning).
• Experience with XGBoost/LightGBM.
• Experience with large-scale data analysis and building actionable insights.
• Ability to work collaboratively in a cross-functional team and communicate results clearly.
• English level - Upper-intermediate and higher.

Nice-to-Have:

• Experience in the sports or betting industry.
• Experience with PyTorch/Tensorflow.
• Familiarity with real-time data processing (Kafka, streaming systems).
• Exposure to building data pipelines and integrating ML models into production systems.
• Knowledge of advanced ML techniques (e.g., ensemble methods, time-series forecasting, anomaly detection).

We offer:

• Ability to work remotely.
• Competitive and timely payment for services.
• Flexible work schedule.
• Personal mentoring and coaching.
• Team building and corporate events.
• 100% paid sick leave.
• 20 working days of paid vacation.
• Paid child care leave.

Job Description

• 4+ years in DevOps or Cloud Engineering.
• Bachelor’s degree in Computer Science or a related field.
• Strong experience with AWS cloud services.
• Hands-on experience with Terraform, Ansible, or CloudFormation.
• Experience with Docker and Kubernetes.
• Knowledge of CI/CD pipelines and automation.
• Scripting skills (Python preferred).
• Understanding of networking concepts such as VPC, security groups, and ACLs.
• Experience with monitoring and logging tools.
• Familiarity with incident, problem, and change management.
• Exposure to Java or Ruby applications.
• AWS certifications such as Solutions Architect or DevOps Engineer.
• Understanding TR-369 / TR-069 protocol.
• Strong problem-solving and ownership mindset.
• Good communication and teamwork.
• Ability to work in fast-paced environments.

Job Responsibilities

• Build and maintain automation using Infrastructure as Code tools such as Terraform, Ansible, and CloudFormation.
• Manage and support AWS infrastructure including EC2, S3, RDS, Lambda, and
  VPC.
• Monitor systems using tools like CloudWatch (alerts, dashboards).
• Ensure high availability, uptime, and system performance.
• Troubleshoot and resolve production incidents and issues.
• Collaborate with cross-functional teams to improve system reliability and
  scalability.
• Implement security best practices in cloud environments.
• Reduce incident resolution time through automation and process improvements.
• Mentor team members and promote DevOps best practices.

Department/Project Description

We are looking for an experienced DevOps Engineer to build and maintain cloud infrastructure on AWS, automate deployments, and ensure high system reliability, performance, and security. This role focuses on automation, cloud operations, and incident management to support scalable and resilient systems.

Skill Category

DevOps

Keyskills - Must Have

• AWS
• Terraform
• Ansible
• CloudFormation
• Docker
• Kubernetes
• CI/CD & Automation
• Scripting

Keyskills - Nice to Have

• Kafka

Additional Skills

OpenStack, Networking concepts (VPC, security groups, and ACLs)

We’re hiring a Security Backend Engineer for our Security Research group to build the systems that power our open-source intelligence efforts - ingesting public package ecosystems (NPM, PyPI), continuously monitoring them, and detecting malicious behavior at scale.
 

This role focuses on building the infrastructure behind large-scale open-source intelligence, package ecosystem monitoring, and supply chain threat detection. It is a highly autonomous individual contributor role with end-to-end ownership of projects, turning security research prototypes into scalable production systems.

Responsibilities

• Build scalable scraping and ingestion pipelines for public package registries such as NPM, PyPI, and similar ecosystems
• Design and maintain distributed systems using APIs, workers, queues, and databases
• Develop detection mechanisms for:
  • malicious install hooks
  • embedded binaries
  • obfuscation techniques
  • suspicious package behavior
• Build and improve risk-scoring algorithms to prioritize real threats
• Work closely with security researchers to productionize detection capabilities

Requirements

Must Have

• 5+ years of backend development experience with Python and/or Node.js / TypeScript
• Hands-on experience with large-scale scraping systems
• Strong knowledge of distributed architectures, including:
  • queues
  • workers
  • PostgreSQL
  • Redis
• Production experience with Docker / docker-compose
• Strong ownership mindset and ability to work autonomously

• Full professional English proficiency

   

Strong Advantage

• Malware analysis or reverse engineering experience
• Familiarity with ELF, PE, or Mach-O formats

• Background in security research or software supply-chain security

   

Nice to Have

• CTF participation
• Bug bounty experience
• OSCP / OSWE certifications
• Experience at companies in application security, supply-chain security, or developer security tooling
• Kafka and large-scale ETL experience

Наш клієнт, Growe, провідна консалтингова компанія та група сервісів у сфері iGaming і розваг. Вони створюють стратегії, що працюють, та рішення, які масштабуються. Поєднуючи стратегічне бачення з практичним досвідом, Growe допомагає бізнесам орієнтуватися в динамічній індустрії, відкривати нові можливості, виходити на нові ринки та досягати сталого зростання.
 

Ідеально для тих, хто прагне:

• Працювати з ризик-алертами казино та платіжними ризиками в реальному часі;
• Виявляти фрод та підозрілу поведінку гравців;
• Аналізувати транзакції, платіжні методи та ризикові сигнали;
• Вирішувати ризик-кейси відповідно до внутрішніх процедур;
• Долучатися до покращення ризик-процесів та операцій;
• Працювати в позмінному графіку: 06:00–14:00 або 14:00–22:00, графік 5/2;
• Співпрацювати з командами Risk, Payments та іншими командами.
   

Досвід, який стане твоєю перевагою:

• 1+ рік досвіду в Risk, Fraud, Payments, Fintech або суміжних напрямах;
• Сильні аналітичні та числові навички;
• Досвід роботи з Excel / Google Sheets;
• Здатність швидко оцінювати ризики та приймати рішення;
• Рівень англійської — Intermediate.
   

Ми цінуємо:

• Високий рівень уваги до деталей;
• Структурне мислення;
• Здатність працювати як самостійно, так і в команді;
• Високий рівень відповідальності та надійності;
• Хороший тайм-менеджмент і вміння пріоритизувати задачі.
   

Наші клієнти пропонують конкурентні переваги для підтримки вашого професійного та особистого зростання, зокрема:

• Орієнтація на здоров’я та добробут;
• Глобальне медичне страхування;
• Можливості для зростання;
• Програми бенефітів (компенсація спорту / стоматології / психолога тощо);
• Бонуси за досягнення результатів;
• Динамічне робоче середовище.

Долучайся — і нехай твоя історія зростання розпочнеться.
 

English version:

Our client, Growe, is a leading business advisory and services group in iGaming and Entertainment. Сreators of strategies that work and solutions that scale. Combining strategic vision with hands-on expertise, Growe helps businesses navigate the fast-evolving industry, seize new opportunities, enter new markets, and achieve sustainable growth.
 

Perfect for those who aim to:

• Work with casino & payment risk alerts in real time;
• Detect fraud and identify suspicious player behavior;
• Analyze transactions, payment methods, and risk signals;
• Resolve risk cases based on internal procedures;
• Contribute to improving risk processes and operations;
• Work in rotating day and evening shifts: 06:00–14:00 or 14:00–22:00, 5/2 schedule;
• Collaborate with Risk, Payments, and other teams.
   

Experience you’ll need to bring:

• 1+ year of experience in Risk, Fraud, Payments, Fintech, or related fields;
• Strong analytical and numerical skills;
• Experience with Excel / Google Sheets;
• Ability to quickly assess risks and make decisions;
• At least an Intermediate level of English.
   

It’s a perfect match if you have those personal features:

• High level of attention to detail;
• Structured thinking;
• Ability to work both independently and as part of a team;
• High level of responsibility and reliability;
• Good time management and ability to prioritize tasks.
   

Our clients offer competitive benefits to support your professional and personal growth, including:

• Health & Wellness Focus;
• Global Medical Coverage;
• Growth Opportunities;
• Benefits Programs (compensation for the gym/stomatology/psychological service & etc.);
• Performance-Driven Rewards;
• Dynamic Work Environment.

Apply, and let your growth journey begin.

Team Summary

Our analytical teams provide actionable insights during the development and rollout of AI-driven features, including motion and object detection. We quantify user experience for core device functionality, conduct deep-dive studies to shape the product roadmap, and evaluate new initiatives from initial trials through full-scale production.

Job summary

We are looking for an experienced Data Analyst/Engineer to join our team. In this role, you will develop self-service dashboards, build data models, monitor key product features, and collaborate with cross-functional teams to drive impactful decisions. This role offers an opportunity to work with large datasets, optimise analytical processes, and influence product growth with meaningful data insights.

Responsibilities and Duties

• Build data models for covering analytics
• Develop self-service dashboards for stakeholders
• Use data to analyse user behaviour, turning insights into practical guidance for product development and strategy
• Create reports that present data outcomes to stakeholders, enabling them to make informed decisions
• Use AI agents to automate routine tasks and ad-hocs

Qualifications and Skills

• 4+ years of experience as a BI/Data Analyst or Data Engineer
• Hands-on experience with data warehousing and ETL pipelines
• Advanced knowledge of SQL
• Hands-on experience with AWS (Athena, Redshift)
• Good written and spoken English

Nice to have

• Experience with AI agents
• Computer science fundamentals
• Knowledge of Python
• Hands-on experience with QuickSight, Tableau or PowerBI
• Good knowledge of statistics and probability theory

We offer multiple benefits that include

• The environment of equal opportunities, transparent and value-based corporate culture and an individual approach to each team member
• Competitive salary packages with performance-based annual reviews
• Opportunity to receive a Performance Bonus for your individual achievements and a Loyalty Bonus recognizing your dedication to the company
• Employment via Contract of Employment (UoP) in complete alignment with Polish Labour Law
• Guaranteed paid vacation, public holidays, and medical leaves as per statutory regulations
• Continuous growth and development opportunities through internal knowledge hubs, corporate courses, and free English classes
• Comprehensive private medical insurance to supplement your standard NFZ coverage

ChatOn is an AI chatbot assistant app with 100M+ downloads – the #1 product in our portfolio by revenue and downloads. We lead in mobile. Now we’re scaling the web, and we’re looking for a Head of Performance Marketing who’ll own that mission.

This isn’t a role for someone who manages from a distance – we’re inviting an expert who can dive into the data, audit a campaign and provide precise, actionable direction to the team to elevate our execution from good to world-class. You’ll bridge the gap between high-level strategy and tactical excellence, working with multi-million dollar budgets, a full in-house creative machine, and a highly capable team.

Your scope goes beyond UA: you’ll own web growth, mobile acquisition, and ASO from one seat.

Let’s take the web from solid to dominant!

The opportunity for impact here is real – and so is the accountability.

What you will do:

• Own performance marketing end-to-end: define the UA strategy across all channels, set the roadmap, and drive the numbers – ROMI, CAC, LTV, forecast profit – while ensuring strong Web–Mobile synergy
• Be the playing coach the team needs: audit campaigns, read attribution setups, diagnose what’s not converting, and give your colleagues precise direction to fix it. You won’t run campaigns yourself – but you could, and the team will know it
• Build a real experimentation system: translate data into hypotheses, hypotheses into tests, and tests into scaling decisions. Every pivot explainable, every win repeatable
• Defend and evolve the strategy at board level: in your first 90 days, present a full UA strategy – mobile and web – to the board. Quarterly, you own the forecast and the narrative behind it
• Lead and grow the team: UAMs, Web Growth Manager, ASO Manager, and Graphic & Promo Designer. Build a culture where ownership is the norm. Coordinate with the Brand, PR, and Influencer Marketing teams
• Connect marketing signals to product: bring acquisition data, user insights, and market intelligence into product discovery. Help build growth loops that compound over time
• Partner and collaborate closely with the in-house creative team on creative strategy for paid channels

What you should have:

• A proven track record in User Acquisition – you grew up in UA, you know the discipline inside out, and performance marketing is your native language
• 5+ years running paid growth teams with direct accountability for growth metrics – revenue, CAC, ROMI – in B2C subscription products
• Confirmed cases of scaling web acquisition – numbers you can talk through, not just channels you’ve touched
• Channel mastery: Meta, Google, TikTok and beyond. You can walk into any ad account, read what’s wrong, and tell the team exactly how to fix it
• Leadership experience with a team of direct reports – you’ve hired, mentored, and if necessary, made hard calls. You know what a high bar looks like and you hold it

What we offer:

• The #1 app in the portfolio – mature product, proven demand, real budget. We move at scale
• Competitive fixed compensation + generous performance-based bonus. We share the upside when the numbers move
• A full creative machine in-house: motion designers, graphic designers, brand, PR, influencer marketing. You orchestrate – they execute. No agency dependency
• Results-oriented colleagues committed to scaling impactful products. Your team will help you achieve the most ambitious goals
• Remote-friendly work environment with high autonomy and minimal bureaucracy

Location

AIBY is a team of strong international top talents. This role allows for either hybrid (combining in-office and remote work), fully remote or in-office work.

Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

About the Product:

A leading social casino platform offering engaging sweepstakes-style gaming across web and mobile channels. The system supports multiple branded experiences, high-frequency deployments and large transaction volumes. It combines front-end user interfaces, complex back-end APIs, real-time data processing and creative promotional mechanics to drive player engagement and retention. In this fast-paced, highly regulated environment, quality assurance is critical to prevent costly production incidents and deliver a seamless user experience under heavy load and frequent feature releases.

About the Role:

As a Senior Manual QA Engineer you will own end-to-end quality for new feature development and core platform functionality. You will partner with product managers, designers and engineers to translate requirements into robust test strategies, design and maintain test plans, execute detailed test cases across web, mobile and API layers, and report defects that impact user experience. You will drive regression cycles, maintain test artifacts (STD, STP, STR) and continuously improve QA processes. This role offers high autonomy, direct impact on product reliability, and exposure to both front-end and back-end technical challenges in a fast-moving, data-driven gaming environment.

Key Responsibilities:

• Test new UI/UX features and back-end functionality across web and mobile platforms.
• Review product requirements and specifications to define comprehensive test coverage.
• Design, document and maintain structured test plans and test cases focused on real-world use cases, cross-platform consistency and edge scenarios.
• Author and manage standard test documentation including STD, STP and STR artifacts.
• Execute end-to-end regression and sanity test cycles to ensure stability before each release.
• Validate APIs with tools like Postman and perform basic scripting to verify workflows and error handling.
• Use browser developer tools and log analysis to diagnose issues and isolate root causes.
• Collaborate closely with development, product management and design teams to communicate quality findings and user experience feedback.
• Report defects with clear reproduction steps, severity assessment and suggested workarounds.
• Participate in daily stand-ups, sprint planning and continuous improvement of QA processes.
• Take ownership of assigned tasks, work independently and mentor junior testers when needed.

Required Competence and Skills:

• 5+ years of professional software testing experience.
• Hands-on testing of web and mobile applications.
• Proficiency with test management and issue tracking tools (e.g. JIRA, TestRail).
• Strong UI and functional testing skills, including multi-step user flows and complex workflows.
• Experience designing and executing regression and sanity test suites.
• Knowledge of API testing using Postman or similar tools plus basic scripting capabilities.
• Familiarity with browser developer tools, server logs and network analysis.
• Deep understanding of QA methodologies, tools, processes and best practices.
• Proven ability to author detailed test documentation and manage test scenarios.
• Excellent attention to detail, organizational skills and analytical mindset.
• Fluent English communication skills, both written and verbal.

Nice to Have:

• Experience with automation frameworks such as Playwright or Selenium.
• Familiarity with CI/CD pipelines and version control workflows.
• Basic knowledge of SQL for data validation.

Why Us:

We provide 20 days of vacation leave per calendar year (plus official national holidays of a country you are based in).

We provide full accounting and legal support in all countries we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

We offer a highly competitive package with yearly performance and compensation reviews.

Senior Go Developer

We are looking for a Senior Go Developer to join our team and work on high-load backend services and microservice architecture.

Responsibilities

• Design, develop, and maintain backend services using Go
• Build and improve scalable microservice architecture
• Work with RabbitMQ for message processing
• Use Redis for caching and fast data operations
• Develop and maintain MongoDB integrations
• Containerize and deploy services using Docker
• Optimize application performance and reliability
• Participate in code reviews and technical discussions

Requirements

• 4+ years of commercial experience with Go
• Strong knowledge of Go and its standard library
• Hands-on experience with RabbitMQ
• Experience with Redis
• Experience with MongoDB
• Solid Docker experience
• Good understanding of microservice architecture
• Experience building high-load / distributed systems
• Experience with REST API and/or gRPC
• Experience with Git and team-based development workflows

Nice to Have

• Experience with Kubernetes
• Experience with PostgreSQL
• Understanding of CI/CD pipelines
• Linux administration skills
• Experience with monitoring and logging systems

Please send your CV and a short description of your experience.

Domain: Banking & Finance
Experience: 6+ years
Project Duration: June 1, 2026 – December 31, 2026
Format: Hybrid
Location: Kraków, Poland

About the Project

We are looking for a React Developer to join a team building modern digital solutions for an international financial services company.

The role focuses on developing responsive and user-friendly frontend applications, collaborating closely with product and design teams, and delivering high-quality user experiences in a dynamic engineering environment.

Responsibilities

• Develop modern and responsive frontend applications using React.js
• Prototype and iterate quickly on new features with a strong focus on usability and user experience
• Collaborate closely with product managers and design teams to improve and refine the user journey
• Integrate frontend applications with REST APIs and backend services
• Follow modern frontend development standards and best practices using JavaScript and CSS
• Create wireframes, mockups, and UI concepts using design and prototyping tools
• Contribute to code quality, performance optimization, and frontend architecture improvements

Requirements

• Strong proficiency in JavaScript, TypeScript, HTML5, and CSS3
• Hands-on commercial experience with React.js
• Good understanding of responsive design and modern UI/UX principles
• Experience integrating REST APIs and working with backend services
• Familiarity with state management solutions and component-based architecture
• Knowledge of modern frontend tooling and build systems
• Understanding of frontend performance optimization and debugging techniques
• Ability to work effectively in cross-functional teams
• Strong written and spoken English communication skills

Nice to Have

• Experience with LangChain
• Experience with LangGraph
• Familiarity with LangSmith
• Knowledge of ETL and data management tools

Tech Stack

• JavaScript
• TypeScript
• React
• HTML5
• CSS3
• REST APIs

Preferred Technologies

• LangChain
• LangGraph
• LangSmith
• ETL & Data Management Tools

Location

• Hybrid from Kraków, Poland
• Important: the client requires office visits in Kraków once per week

Recruitment Process

• Technical interview with external partner
• 1.5-hour technical interview with the end client
• Cultural fit interview

Domain: Banking & Finance
Experience: 6+ years
Project Duration: June 1, 2026 – December 31, 2026
Format: Hybrid
Location: Kraków, Poland

About the Project

We are looking for a Backend Software Engineer / Java Developer to join a team building modern enterprise-scale digital solutions for an international financial services company.

This role is a great fit for someone who enjoys hands-on backend development, designing scalable APIs, and working in a fast-paced international engineering environment.

Responsibilities

• Develop, maintain, and enhance backend applications using Java
• Design and support scalable REST APIs and microservices
• Collaborate with product owners, architects, and developers to deliver new features and improvements
• Contribute to the design of secure, reliable, and high-performing systems
• Work within Agile teams and participate in CI/CD-driven delivery processes
• Perform code reviews and contribute to automated testing practices
• Support production environments and troubleshoot issues when necessary
• Drive improvements in development standards, tooling, and code quality

Requirements

• Strong commercial experience with Java (8, 11, or 17+)
• Solid expertise with Spring and Spring Boot
• Hands-on experience building RESTful services and microservices-based systems
• Experience with SQL databases such as PostgreSQL or Oracle
• Familiarity with Git, CI/CD pipelines, and build tools like Maven or Gradle
• Experience working in Agile or DevOps environments
• Strong English communication skills

Nice to Have

• Experience with cloud platforms such as AWS, GCP, or Azure
• Knowledge of Docker and Kubernetes
• Familiarity with messaging and event-streaming technologies such as Kafka or MQ
• Previous experience in banking, financial services, or other regulated industries

Tech Stack

• Java
• Spring / Spring Boot
• REST APIs
• SQL
• PostgreSQL
• Oracle
• Git
• CI/CD
• Maven / Gradle

Nice to Have Technologies

• Cloud platforms
• Docker
• Kubernetes
• Kafka
• MQ

Location

• Hybrid from Kraków, Poland
• Important: the client requires office visits in Kraków approximately 6 times per month

Recruitment Process

• Technical interview with an external partner
• 1.5-hour technical interview with the end client
• Cultural fit interview

We’re looking for a Senior Front-End Engineer to join our team. 

Work Location: Poland (Krakow), Slovakia (Kosice) or Czechia (Prague). 

Hybrid: 2+ days per week in the office, the rest remote.

The Mission

We are building a complex, real-time ecosystem for micromobility and logistics systems sim—where split-second logistics meet seamless user experiences. We need a Front-End powerhouse to lead the development of our Customer Mobile Web App and our high-utility Internal Admin Panels.

You’ll be the bridge between the sleek, high-performance interface our users see and the robust, scalable Python services that power the logic.

• Mobile-First Frontend: Architect and scale our React-based mobile web application, ensuring 60fps performance and offline-first capabilities.
• Operational Control Centers: Build dense, data-heavy Admin Panels that allow our operations team to monitor real-time logistics, manage users, and handle complex dispatching.
• Scalable Backend: Design and maintain performant APIs using Python (FastAPI/Django) to handle high-concurrency event streams.
• End-to-End Ownership: From database schema design to CSS transitions, you’ll own the entire feature lifecycle.

Who You Are

• The Architect: You don't just "write code"; you design systems. You understand how a change in a Python microservice ripples out to the React frontend.
• UX Enthusiast: You understand that an Admin Panel requires different UX "muscle" (efficiency and density) than a mobile app (simplicity and speed).
• Problem Solver: You’ve dealt with the "hard stuff"—real-time GPS tracking, race conditions in booking logic, or complex state management.
• Pragmatist: You balance the need for clean, tested code with the reality of shipping features in a fast-paced environment.

Will be a plus Led transformation of standalone product into scalable SaaS platform.

Why Join Us?

Work on a product with immediate, real-world impact.

A "no-red-tape" environment where your architectural decisions stick.

Layer Technology

Frontend - React Native Expo, Styled Components, Mobx/Redux, WebSockets. Experience with Firebase, Expo SDK, Expo Modules.

Backend - Python (FastAPI / Django / Flask)

Database - PostgreSQL, Redis (for real-time caching)

Infrastructure - AWS/GCP, Docker, Kubernetes

Real-time - WebSockets / Socket.io (for "Uber-style" live tracking)

Requirements & Skills - Senior Front-End Engineer

What We’re Looking For:

• 4+ years of commercial experience with React Native (Expo)
• Advanced proficiency in React Native Expo.
• Expert-level TypeScript experience with advanced types and strict configurations;
• Deep knowledge of React 18+ fundamentals: hooks, context, memoization, rendering performance.
• Strong knowledge of state management tools (Redux, MobX, Zustand, etc.);
• Experience building map-based UI: react-native-maps / MapView, markers, polylines/routes, camera control, clustering.
• Strong UI implementation skills: different screen sizes, accessibility basics.
• Hands-on experience with GPS / background location tracking
• Expertise in navigation: React Navigation (deep linking, nested navigators, modal flows).
• API integration: REST/GraphQL consumption, request caching, pagination, retries, error handling.
• Handling auth flows (JWT/OAuth), token refresh, secure storage patterns (Keychain/Keystore concepts).
   

Core responsibilities: 

• Full end-to-end ownership of the mobile app (iOS & Android)
• App maintenance, releases, production stability & incident handling
• GPS / geolocation + live tracking
• REST API + real-time event integration
• Performance, reliability, and architecture improvements
• Ability to understand business requirements and translate them into technical requirements.

Required Skills

• React Native Expo, Styled Components, Mobx/Redux, WebSockets. 
• Experience with Firebase.
• Expo SDK 52+, Expo Modules

Language Skills

English: Upper intermediate (B2)

We offer:

• Challenging and rewarding tasks with autonomy in a distributed international team
• Motivated colleagues who foster a collaborative environment
• Competitive salary based on your experience and expertise
• 20 vacation days + state holidays + your birthday off (for full-time employees)
• Sick leave coverage (5 days for full-time employees)
• Opportunities for regular business trips abroad