Jobs Poland

We are a U.S.-based fintech startup operating in the investment and financial services space. Our distributed teams work across Poland, the United States, and Ireland, collaborating on technology-driven solutions related to stocks and investments.

Security, compliance, and the responsible handling of sensitive financial data are central to how we operate, as we build scalable products in a regulated environment.

Responsibilities

- Modernize legacy systems via redesign and refactoring.
- Develop UI using React + Nexus design system.
- Build APIs with proper security and lifecycle governance. 

- Design reusable component libraries and UI frameworks. 

- Collaborate with UX, product, and architecture teams. 

- Optimize frontend and backend performance.

- Support public API documentation and governance.

Skills

- Strong Java, C# + Spring Boot backend capability.
- Expertise in React, TypeScript, Nexus UI components.
- Experience with modernization and migration projects.
- Understanding of microservice and API design.
- Familiarity with CI/CD, linting, testing frameworks.
- Knowledge of frontend security and performance patterns. - Good collaboration across UX and backend teams.

Please read before applying:

The client is building a product in the bank/investment/brokerage systems niche, and their investors have strict security and compliance requirements, where every person will go through a background check.

What does this mean?

Before making an offer, they will check whether you have violated any EU laws.

Why Poland?

The client has teams in the USA, Ireland, and Poland.

For background check — you must be a taxpayer in Poland for 2+ years.

We are looking for a skilled Product Business Analyst willing to apply his current knowledge and skills and is inspired to discover new technologies and become a part of cross-functional team. 

If you have desire to take part in creating of mostly mobile apps and share own approaches with team-mates, then join our friendly team that consists of: Business Systems Analyst, Technical Delivery Manager, Application Architect, Developers (Backend, Frontend and Xamarin/ Flutter), QA Engineers and Designers. 

Requirements 

• Lead discovery sessions, stakeholder interviews, and workshops to define business objectives and success criteria. 
• Identify business processes, document AS-IS and TO-BE flows, and highlight gaps or inefficiencies. 
• Translate business needs into structured documentation: BRDs, PRDs, user stories, acceptance criteria, functional and non-functional requirements. 
• Model system behavior, define integrations, data flows, user roles, permissions, and edge cases. 
• Validate feasibility with tech teams and ensure alignment between business expectations and technical constraints. 
• Support backlog structuring, prioritization, and scope definition together with delivery and engineering leads. 
• Actively participate in pre-sale by analyzing client problems, shaping solution approaches, estimating scope complexity, and contributing to proposals. 
• Manage requirement changes, assess impact, and communicate trade-offs clearly. 
• Identify risks early and proactively propose mitigation strategies. 

Direct the product experience 

• Build end-to-end product vision, defining user journeys, interaction logic, and experience principles. 
• Structure information architecture and ensure logical navigation and system consistency. 
• Align business rules with user experience so that flows are intuitive but technically realistic. 
• Guide designers with clear functional context and support them with decision-making when needed. 
• Be able to step in with solution concepts during client discussions. 

Core Responsibilities

• Lead discovery sessions and stakeholder workshops to define business goals and success criteria. 
• Analyze and document business processes, AS-IS / TO-BE flows, and requirements. 
• Translate business needs into clear documentation (user stories, acceptance criteria, functional and non-functional requirements). 
• Collaborate with engineering and delivery teams to ensure feasibility and scope alignment. 
• Support backlog structuring, prioritization, and change management. 
• Participate in pre-sales activities, including solution shaping and scope estimation. 
• Contribute to product and UX vision by defining user journeys and supporting design decisions. 

What we offer 

• Continuous learning and career growth opportunities 
• Professional training and English/Spanish language classes 
• Comprehensive medical insurance 
• Mental health support 
• Specialized benefits program with compensation for fitness activities, hobbies, pet care, and more 
• Flexible working hours 
• Inclusive and supportive culture 

Наш клієнт, Jugabet —  бренд і ігрова платформа, доступна для гравців у Латинській Америці. Завдяки сильному регіональному фокусу та локалізованим стратегіям, Jugabet швидко стає ключовим гравцем на ринку.

Ідеально для тих, хто прагне:

• Моніторити та контролювати ефективність обробки платежів у межах закріпленого ринку / регіону відповідальності;
• Відстежувати рівень конверсії платежів і проводити технічний аналіз для виявлення та усунення проблем, пов’язаних з оплатами;
• Забезпечувати коректну роботу платіжних методів, включно з перевіркою налаштувань конфігурації (маршрутизація, каскадування, кешування), а також розуміти шляхи ескалації до платіжних провайдерів та/або внутрішніх технічних команд у разі виникнення проблем;
• Опрацьовувати запити від служби підтримки клієнтів, маркетингу та інших внутрішніх команд, пов’язані з транзакціями та платіжною обробкою;
• Працювати з числовими даними та керувати фінансовою і транзакційною інформацією з високою точністю та уважністю до деталей;
• Нести відповідальність за платіжні баланси, включно з моніторингом, розподілом, звіркою та контролем балансів між платіжними провайдерами та внутрішніми рахунками.

Досвід, який стане твоєю перевагою:

• Рівень володіння англійською мовою — Upper-Intermediate або вище;
• Досвід роботи від 1 року на посаді Billing / Payment Specialist, бажано у сфері онлайн-платежів;
• Досвід роботи з Excel та іншими інструментами MS Office;
• Досвід письмової комунікації з міжнародними клієнтами, партнерами або платіжними провайдерами;
• Ґрунтовне розуміння платіжних і транзакційних систем, інструментів та сервісів;
• Глибокі знання платіжних потоків, платіжних методів, бек-офісних систем платіжних провайдерів, а також наявних інструментів моніторингу, аналітики та звітності;
• Загальне розуміння процесів інтеграції з платіжними провайдерами та пов’язаних технічних аспектів (API, колбеки / вебхуки, статуси транзакцій, обробка помилок), достатнє для виявлення проблем і ефективної комунікації з технічними командами.

Ми цінуємо:

• Сильне аналітичне мислення;
• Високу уважність до деталей;
• Сильне почуття відповідальності.

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

• Орієнтація на здоров’я та добробут;
• Медичне страхування;
• Можливості для кар’єрного зростання;
• Пакет бенефітів (відшкодування витрат на спортзал, стоматологічні та психологічні послуги тощо);
• Бонусну систему на основі OKR;
• Динамічне робоче середовище.

Долучайся — і нехай твоя історія зростання розпочнеться.

English version:

Our client, Jugabet, is a brand and gaming platform accessible to players in Latin America. With a strong regional focus and localized strategies, Jugabet is quickly becoming a key player in the market.

Perfect for those who aim to:

• Monitor and control payment processing performance within the assigned market/region of responsibility;
• Track payment conversion rates and conduct technical analysis to identify and resolve payment-related issues;
• Ensure payment methods are functioning correctly, including checking configuration settings (routing, cascading, caching) and understanding escalation paths to payment providers and/or internal technical teams in case of issues;
• Handle and process requests from Customer Support, Marketing, and other internal teams related to transactions and payment processing;
• Work with numerical data and manage financial and transactional information with high accuracy and attention to detail;

• Be responsible for payment balances, including balance monitoring, distribution, reconciliation, and control across payment providers and internal accounts.

   

Experience you’ll need to bring:

• Upper-intermediate level of English;
• 1+ year of experience in a Billing / Payment Specialist role, preferably with online payments;
• Experience using Excel and other MS Office tools;
• Experience in written communication with international clients, partners, or payment providers;
• In-depth understanding of payment and transaction systems, tools, and services;
• Strong knowledge of payment flows, payment methods, provider back-office systems, and existing monitoring, analytics, and reporting tools;

• ​​General understanding of payment provider integration processes and related technical aspects (APIs, callbacks/webhooks, transaction statuses, error handling), sufficient to identify issues and communicate effectively with technical teams.

   

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

• Strong analytical thinking;
• High attention to detail;

• Strong sense of responsibility.

   

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.

The Calendars builds an iOS app used by millions of people every day to plan their time. We’re looking for an iOS Engineer who wants to work on a large-scale product, contribute to the development of key features, and build a high-quality user experience as part of a strong team.

What you will do:

• Implement, document, maintain existing application functionality.
• Enhance the application's responsiveness. Identify and rectify bottlenecks and bugs.

• Collaborate with UX/UI designers to transform design mockups and wireframes into fully functional and visually appealing iOS application

   

About you:

• Experience developing applications using Swift and Objective-C.
• Understanding of iOS design principles, interface guidelines, and best practices.
• Strong understanding of SOLID, OOP patterns, concurrency patterns.
• Proficient in memory management and performance tuning.

• Comfortable working with UIKit, SwiftUI, Foundation, Combine, GCD, Swift Concurrency.

   

Would be a plus:

• Experience of working with calendar-related applications e.g. time zones, recurreint events, etc.
• Intstuments
• CI/CD
• StoreKit

What you will get at Readdle:

• Customer-centric culture. We put our users at the heart of everything we do. Every team member has the opportunity to engage directly with customers, gaining insights that shape meaningful, delightful experiences for millions worldwide.
• Relentless growth. We’re committed to mastery in our craft. We take ownership of our work, decisions, and outcomes, and we see feedback as a catalyst for growth. Every challenge is an opportunity to learn, evolve, and raise the bar.
• Exceptional people, exceptional team. Our greatest strength is our people. We care deeply about each other, work transparently, and celebrate collective success. Together, we build an environment where everyone can do their best work and grow beyond their potential.
• Real impact. We design products that truly matter. Our focus is on delivering tangible value, simplifying complexity, pushing boundaries, and continuously improving how we build and deliver solutions to our users.
• Culture of innovation. We embrace curiosity and creativity in everything we do. Fresh ideas are not just welcomed, they’re expected, celebrated, and turned into real innovations that shape the future of our products and company.

We are looking for an experienced SQL Developer with deep, practical expertise in MS SQL Server, with a focus on query optimization, performance tuning, and the design of efficient database schemas. A key part of this role is reviewing, analyzing, and improving existing SQL and schema structures on the OLTP systems.

Requirements

• 3+ years of hands-on experience with MS SQL Server as a SQL Developer.
• Demonstrated practical experience in SQL query optimization.
• Strong skills in analyzing execution plans, designing indexing strategies, and tuning performance.
• Strong ability to write clean code in accordance with the project's technical requirements.
• Solid knowledge of OLTP database design principles and best practices.
• Ability to present real examples of performance improvements or schema redesigns you have implemented.

Core Responsibilities

• Create database objects/write stored procedures.
• Analyze and optimize slow SQL queries in MS SQL Server (joins, subqueries, etc.).
• Work with execution plans, indexes, statistics, and partitioning to enhance performance.
• Demonstrates the ability to clearly understand and effectively analyze business requirements.
• Collaborate with developers to ensure efficient SQL and schema use across the platform.
• Propose structural, architectural, and performance-oriented improvements.

What we offer

• Continuous learning and career growth opportunities
• Professional training and English/Spanish language classes
• Comprehensive medical insurance
• Mental health support
• Specialized benefits program with compensation for fitness activities, hobbies, pet care, and more
• Flexible working hours
• Inclusive and supportive culture

If you’re excited about building drones from the ground up and improving their performance — this role is for you. 

You’ll work hands-on with UAV hardware, assembling, soldering, and testing components, contributing to the modernization and reliability of drone systems.

About the opportunity:
● The product company  is looking for a Drone Engineer to assemble, solder, and maintain UAV hardware used in autonomous swarm systems.
● Company builds AI-powered autonomous swarm solutions for UAVs, independent of specific manufacturers, minimizing human risk. Their software has proven itself across tens of thousands of missions.

● In September 2025, the company raised a $15M investment round.
● The Drone Engineer will take part in the assembly, integration, and improvement of UAV systems — including soldering, replacing components, and supporting ongoing R&D for new drone designs and upgrades.

Work format: B2B.

► Key requirement: experience in UAV assembly, soldering, and testing of electronic modules; spoken English.

About Client 

The client is a technology company specializing in autonomous robotics and intelligent automation solutions for retail and commercial environments. Their products integrate advanced computer vision, artificial intelligence, and robotics platforms to enable real-time monitoring, data collection, and operational optimization in physical spaces. The company develops end-to-end robotics systems, combining hardware, embedded software, AI algorithms, and cloud-based analytics. Their solutions are focused on improving efficiency, visibility, and decision-making through automation and advanced imaging technologies. 

Job Summary 

As a Senior AI / Computer Vision Engineer (Robotics, ROS), you will develop expertise in imaging science, computer vision, artificial intelligence, and ROS (Robot Operating System). You will participate in full product development through production. You will be expected to demonstrate a level of expertise in specific areas that matches or exceeds the expertise of our customers. You will consult on system architectures and assess technical requirements and competencies needed to produce a high-quality product. 

Responsibilities 

• Represent the client Technologies AI / Computer Vision / ROS group in technical discussions and meetings. 
• Stay abreast of the latest technologies to provide competitive and cost-effective designs. 
• Raise the perception of the client’s acumen in the industry by authoring or presenting white papers. 
• Lead the development of platform and product architectures in collaboration with technical staff. 
• Perform independent research and engineering studies. 
• Effectively consult on multiple projects in parallel. 
• Develop state-of-the-art algorithms in the field of AI / Computer Vision / ROS. 
• Translate existing imaging algorithms to the client’s Robotics platform. 
• Develop tools for implementing and using AI / ML / ROS designs. 

Must Requirements 

• minimum 5–7 years of hands-on experience in AI / Computer Vision and Robotics software development, or an equivalent combination of education, training, and experience. 
• Strong hands-on experience in AI and Computer Vision algorithm development. 
• Proven experience implementing and optimizing computer vision solutions in robotics platforms. 
• Solid experience working with ROS (Robot Operating System) in production environments. 
• Experience designing system or platform architectures in AI / Robotics domains. 
• Ability to analyze algorithms for performance trade-offs (accuracy, latency, compute, memory). 
• Strong knowledge of Computational 3D Geometry. 
• Experience working with robotics or mobile imaging acquisition platforms. 
• Proficiency in C++ and Python (production-level development). 
• Experience working with Linux, including real-time environments. 
• Familiarity with modern code development frameworks. 
• Bachelor’s or Master’s degree in Engineering or Computer Science. 

Project Description 
We are transforming our fleet management platform and data processing infrastructure from a monolithic application to a modern, event-driven microservices architecture. This includes shifting from a tightly coupled relational database to a scalable, multi-tenant event stream platform and Kubernetes operators development. 

Job Description 

We are seeking an experienced Go Backend Engineer to join the team responsible for transforming the platform into a multi-tenant, event-driven architecture. The ideal candidate has deep hands-on experience with Go microservices, distributed data flows, and Kubernetes-based deployments in cloud environments. 

This role involves designing and developing backend services, integrating real-time messaging pipelines, ensuring high observability standards, and collaborating with platform, data, and DevOps teams. 

Technical Requirements 

• 5+ years of backend software development experience. 
• Strong professional experience with Go (Golang). 
• Practical experience designing or maintaining microservices. 
• Experience with event-driven messaging systems such as Apache Pulsar (preferred), Kafka, or NATS. 
• Hands-on knowledge of Kubernetes, including deployments, scaling, and configuration. 
• Familiarity with cloud platforms (AWS, GCP, or Azure). 

Cloud & Deployment 

• Hands-on knowledge of Kubernetes, including deployments, scaling, and configuration. 
• Practical experience with Kubernetes operators, CRDs, Helm. 
• Understanding of cloud CI/CD systems and delivery pipelines (GitHub Actions). 

Data 

• Experience with PostgreSQL and Redis. 
• Understanding of Data Engineering concepts, including ETL/ELT and streaming workflows. 

Nice to Have 

• Experience with C/C++ (networking, concurrency, high-performance systems). 
• Experience with Python, especially for data workflows. 
• Experience with the Ruby on Rails ecosystem. 
• Experience designing and building multi-tenant data architectures. 
• Experience implementing observability stacks (Prometheus, Grafana, OpenTelemetry). 

Responsibilities 

• Design, implement, and maintain Go microservices powering the data platform. 
• Integrate services with Apache Pulsar (or equivalent streaming tools) to support real-time data distribution. 
• Ensure observability and reliability through logging, metrics, and tracing. 
• Deploy and maintain services in Kubernetes environments across cloud platforms. 
• Collaborate with Data Engineering, Platform, and DevOps teams during the architecture and implementation stages. 
• Participate in technical discussions, code reviews, and performance optimizations. 

N-iX is looking for a Lead/Senior Kotlin Engineer to join our team.

Our customer is a fintech company that provides flexible buy-now-pay-later solutions, enabling consumers to split purchases into transparent, interest-free, or interest-based payments. The customer's Platform team is responsible for managing critical services that are essential to the success and sustainability of the organization. 

In simple terms, the team handles transactional communication send-outs to customers via email, SMS, and push notifications. These services demand attention to detail, proactive maintenance, and swift response times to ensure seamless operations. 

The recent high-priority initiatives include re-architecture/platform modernization, high availability, and internationalization efforts; these are vital for our organization's growth and competitiveness in the market. These initiatives require dedicated expertise and resources to execute efficiently and effectively.

Main Responsibilities:

• Design and develop a robust and extensible Kotlin framework and platform.
• Own and deliver quarterly goals by leading engineers through ambiguity to solve open-ended problems while ensuring team support throughout delivery.
• Collaborate across the product development lifecycle with product management, design, and analytics to participate in ideation and articulate technical constraints.
• Drive decision-making and risk assessment by partnering on strategic technical choices that properly consider trade-offs and business impact.
• Proactively identify and resolve systemic issues across projects, processes, and technology, advocating for and leading the implementation of solutions.
• Ensure operational excellence and availability by creating and monitoring metrics, supporting "keep the lights on" efforts, and participating in an on-call rotation.
• Foster a culture of quality and ownership by setting high standards for code reviews and design, and advocating for best practices through technical writing and talks.

• Mentor engineering talent by providing actionable feedback, guidance, and leading by example to grow the team's capabilities.

   

Role Requirements:

• At least 5 years of proficiency in Kotlin with extensive experience designing, developing, and launching backend systems at scale
• Deep experience with distributed systems and high-availability architectures
• Experience in technical leadership in system design, with a proven ability to deliver significant features using elegant, simple, and extensible designs
• Strong infrastructure knowledge, including technologies such as AWS, MySQL/DynamoDB, and Kubernetes
• Proficiency in large-scale codebase management, utilizing a suite of tools and practices that ensure safe and efficient technical changes
• Experience in operational monitoring, including the use of metrics and tracing to maintain system health
• Excellent collaboration skills for effective partnership with global, cross-functional engineering teams
• Well spoken and written knowledge of the English language (C1)

We are looking for a Media Buyer to manage and scale user acquisition campaigns for mobile apps (iOS and Android), with a focus on subscription-based products.

Requirements

• 2+ years of experience as a Media Buyer
• Experience working with utility mobile apps
• Proven experience promoting mobile applications (iOS and Android)
• Hands-on experience launching and managing campaigns across:
  • Meta Ads (Facebook, Instagram)
  • Google Ads
  • TikTok Ads
  • In-app ad networks
  • Apple Search Ads, Push/Pops, and other traffic sources
• Experience running campaigns focused on paid subscriptions within mobile apps
• Strong analytical skills and ability to analyze and optimize campaign performance
• Experience with analytics and attribution tools such as Google Analytics, AppsFlyer, or similar
• Strong understanding of the mobile advertising ecosystem and UA best practices

Responsibilities

• Plan, launch, and manage advertising campaigns for mobile applications
• Optimize media budgets to achieve target KPIs
• Analyze campaign performance and provide recommendations for improvement
• Identify scaling opportunities and improve campaign efficiency
• Monitor mobile advertising trends, new tools, and platform updates

Meet the YozmaTech

YozmaTech isn’t just another tech company - we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster. We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact. Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family - you’ll feel right at home with us.

Our client's product is a cloud-based financial planning and analysis (FP&A) platform designed for SMBs, transforming manual monthly and quarterly reporting into automated, scalable processes.
Solution connects to organizational systems such as ERP, CRM, HRIS, and complex Excel files, consolidating all data into a single cloud-based database. Product automates critical financial transformations including FX conversions, eliminations, hierarchies, financial adjustments, and more while allowing end-users to continue working in Excel as they always have.
Serving primarily the US market, our client is experiencing strong and sustained growth. This is an exciting opportunity to lead a multidisciplinary R&D team and work on a cutting-edge SaaS product at scale.

Our technology teams are the engine of our business.
We maintain a dynamic startup culture that encourages innovation, ownership, and critical thinking. On our project, you’ll collaborate with a global team of engineers, architects, product managers, and customer-facing teams to shape the future of financial planning and analysis.

Key Requirements:

🔹 BSc in Computer Science or equivalent;
🔹 8+ years of software engineering experience, including 5+ years of Python in production;
🔹 3+ years in an R&D Team Lead role, leading cross-functional teams (backend, frontend, and QA) in a production environment;
🔹 Proven experience managing and leading remote teams in a fully distributed, remote-only environment;
🔹 Proven experience working in a product-based company (not project/outsource);
🔹 Strong experience with Python backend development in a SaaS environment, including cloud-based, scalable, and high-availability distributed systems;
🔹 Strong knowledge of REST APIs, microservices, asynchronous programming, and testing;
🔹 Hands-on experience with CI/CD pipelines and Infrastructure-as-Code (e.g., Terraform, Helm);
🔹 Solid understanding of software architecture, design patterns, and technical trade-offs;
🔹 Proven ability to lead projects end-to-end, from requirements and design through development and production;
🔹 Excellent communication skills and high proficiency in English;

Technical Experience:
🔹 Python frameworks: Django, FastAPI;
🔹 Databases: PostgreSQL, MSSQL;
🔹 Messaging & async processing: Celery, RabbitMQ;
🔹 Caching & performance: Redis;
🔹 Cloud platforms and services (Azure – advantage);
🔹 Familiarity with event-driven architectures and distributed systems;
🔹 Strong grasp of KISS, DRY, SOLID, OOP principles;

Will be plus:

🔹 Experience with Azure cloud services;

What you will do:

🔹 Lead and manage a cross-functional R&D team of 5–7 engineers, including backend (Python), frontend (Angular), and QA engineers;
🔹 Own end-to-end product development, from initial requirements and design, through development, testing, deployment, and production monitoring & troubleshooting;
🔹 Provide hands-on technical leadership, including architecture design, coding when needed, and thorough code reviews;
🔹 Work closely with Product Managers and Architects to define scope, prioritize backlog, and deliver high-quality features;
🔹 Drive engineering best practices: clean code, testing, CI/CD, performance, reliability, and security;
🔹 Be accountable for team delivery, quality, velocity, and stability;
🔹 Define team goals, KPIs, and success metrics;
🔹 Mentor and develop team members, supporting their professional and technical growth;
🔹 Participate in hiring, onboarding, and training of new team members;
🔹 Actively monitor production systems, lead incident response, root-cause analysis, and continuous improvement;

Interview stages:

🔹 HR Interview;
🔹 Tech interview with Team Lead;
🔹 Interview with PM;
🔹 Interview with VP R&D (optional);
🔹 Reference check;
🔹 Offer.

Why Join Us?

At YozmaTech, we’re self-starters who grow together. Every day, we tackle real challenges for real products - and have fun doing it. We work globally, think entrepreneurially, and support each other like family. We invest in your growth and care about your voice. With us, you’ll always know what you’re working on and why it matters.

From day one, you’ll get:

🔹 Direct access to clients and meaningful products;
🔹 Flexibility to work remotely or from our offices;
🔹 A-team colleagues and a zero-bureaucracy culture;
🔹 Opportunities to grow, lead, and make your mark.

After you apply

We’ll keep it respectful, clear, and personal from start to offer. You’ll always know what project you’re joining - and how you can grow with us.

Everyone’s welcome

Diversity makes us better. We create a space where you can thrive as you are.

Ready to build something meaningful?

Let’s talk. Your next big adventure might just start here.

Numerical Technologies LTD is a leading provider of custom software solutions and services specializing in risk, limits, and regulatory capital. Right now, we are looking for a Python Developer to join our team.

 

What will you be doing?

As part of the team, you will be participating in a project with a large US bank. You will be helping us develop new software features and support and maintain the existing ones. You will be writing scalable and fault-tolerant code, debugging programs, and integrating applications with third-party web services. You will be working closely with the client and product manager to understand the system’s functional and non-functional requirements, and contribute to code quality through unit testing, integration testing, code review, and system design using Python to build robust software that aligns with the client’s business needs.

 

What are we looking for:

◼ A strong programming background with Python and OOP skills.

◼ Proficiency with SQL (Postgres, SQLite) and NoSQL (MongoDB) databases.

◼ Deep understanding of algorithms and data structures.

◼ Experience with FastAPI and Linux environments.

◼ Strong problem-solving skills and ability to collaborate effectively in a team environment.

◼ Familiarity with LangChain is a plus.

 

What we offer:

◼ Competitive compensation depending on experience and skills.

◼ Regular assessments and salary reviews.

◼ Paid personal days.

◼ Health insurance.

◼ Mental health support program.

◼ English/Polish/Spanish language classes.

◼ Flexible working schedule.

This is a full-time, office-based position.
We are looking for a People Partner to collaborate with the HR Lead in managing HR processes. Our vendor team is developing a product for one of the top 5 tech companies.
We strive to create the best working environment by offering a comfortable office in a central location, a flexible schedule when possible, and opportunities for professional growth.

Required skills:

• C1 level of English
• 1+ year of experience in HR within the IT sector
• Understanding of general HR processes
• Excellent communication, negotiation, presentation, and interpersonal skills

• B2 level of Polish

   

We offer:

• Full-time, office-based position
• 2 days of remote work per month
• Competitive compensation based on experience and skills
• Opportunity to work in a growing team
• Supporting occasional events and culture
• Funding for education and support for professional development

Responsibilities:

• Communicating with internal managers
• Conducting one-on-one meetings with team members
• Arranging internal team-building activities and events
• Monitoring team dynamics, providing guidance, and assisting in resolving issues
• Conducting surveys and questionnaires

We’re looking for an energetic and experienced Business Development Specialist to help us grow new partnership projects in the traffic arbitrage industry.

We need someone who lives and breathes the industry, understands how media buying works, knows how to negotiate, and is ready to represent our team at conferences and in the media.
 

Responsibilities:

• Identify and attract new partners for upcoming arbitrage projects (especially in the Gambling and Leadgen verticals);
• Analyze and scale successful partnerships between arbitrage teams using our resources — funding, operational support, and industry connections;
• Represent the company at conferences, meetups, and industry events (networking, communication, public speaking);
• Strengthen the company’s brand image by participating in interviews, podcasts, and other public activities;
• Conduct negotiations, present partnership opportunities, and close collaboration agreements.
   

Requirements:

• Deep understanding of the traffic arbitrage industry (key metrics, verticals, mechanics);
• Experience in arbitrage or related areas: media buying, affiliate marketing, or sales;
• Strong communication and negotiation skills — able to sell ideas without pressure;
• Proactive, charismatic, and open — you genuinely enjoy networking and being in the spotlight;
• Willingness to travel frequently and speak at public events;
• A strong personal network in the arbitrage community will be a plus.
   

We offer:

• Competitive salary, discussed individually;
• Work in a top-tier media buying team with a strong reputation;
• The opportunity to influence company strategy and launch new directions;
• Participation in international conferences, business trips, and media activities — all covered by the company.

Please note that the project location is Gdansk, and it's required to visit the office 2-3 times per quarter

Job Description

Must have:

• 6+ years of professional software development experience.
• Strong experience with windows development.
• Strong understanding of software design principles, data structures, and algorithms.
• Experience working with complex, large-scale, or long-lived codebases.
• Strong problem-solving skills and attention to detail.
• Good communication skills and ability to work effectively in cross-functional teams.

Nice to Have

• Experience working on mission-critical or safety-relevant applications (aviation, navigation, defense, medical).
• Hands-on experience with C/C++ (performance-critical components, legacy code, or system-level logic).
• Hands-on experience with Swift or/and RUST
• Experience with performance profiling and optimization tools.
• Exposure to geospatial, mapping, or navigation-based applications.
• Experience working in an Agile / Scrum environment.
• Knowledge of CI/CD pipelines for mobile applications.

Job Responsibilities

Key Responsibilities:

• Application Development: Design and implement new features for the EFB application using C# and the .NET framework.
• Optimization: Ensure the application performs reliably under the hardware constraints of mobile devices (e.g., tablets), focusing on memory management and processor efficiency.
• Aviation Integration: Develop and maintain modules for complex flight-critical tasks, including weight and balance computations, fuel planning, and electronic logbook management.
• Data Management: Design and optimize local data-stores (embedded databases) for offline access to navigation charts and manuals.
  UI/UX Design: Create user-friendly interfaces tailored for cockpit environments, ensuring ease of use during critical phases of flight.
• Testing & Compliance: Conduct rigorous unit and regression testing to ensure software reliability, adhering to industry safety standards like DO-178C where applicable.
• Legacy Maintenance: Debug, refactor, and update existing C# codebases to add new features or improve system stability.

Department/Project Description

We are seeking a Mobile Developer to design, develop, and maintain our Electronic Flight Bag (EFB) application. You will work on a mission-critical system built in C# specifically for the Windows platform. Your role is essential in transitioning flight crews to paperless cockpits by delivering high-performance, reliable software that handles navigational charts, flight planning, and real-time performance calculations.