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Do you want to be a part of a seriously ambitious and vibrant team where you can have your say about how we get our sh*t done?

Here, we do things “The Codewise Way”. This basically means that we work – and play – very differently to how everybody else does. We don’t believe in hierarchies, endless processes and cookie-cutter approaches to doing our work. What we do believe in is giving our team the freedom to be innovative and make a real difference. If this sounds like a place for you … get applying!

IT job offers


Data Engineer

Kraków, Poland

About role
  • As a Data Engineer your job will be to help our product teams create, extract, store and process/query huge amounts of transactional data in efficient way.
Key Responsibilities
  • You will design, implement and operate pipelines to stream, store and extract data from our systems, processing hundreds of thousands transactions per second
  • You will help to build solutions to answer business queries on the data that is located in heterogeneous environment
  • You will provide development and data science teams with efficient data access methods
  • Experience in design, deployment and maintenance of large data pipelines
  • 2+ years of development experience in Java or Python
  • Good understanding of data quality issues and design of efficient data schema
  • Good understanding of network and operating systems performance
  • Experience with SQL
  • Good communication skills
Nice to haves
  • Understanding of algorithms that operate on big data and their performance aspects
  • Experience with Hadoop stack, including Spark and Hive
  • Familiarity with design and operations of data warehouses
  • Experience with cloud (we use AWS)

Data Scientist

Kraków, Poland

About role
  • As a Data Scientist you will help us build and improve our low-latency real-time bidding algorithms by informing them with ever improving online learning models of market performance and user behaviour.
  • Your role will include mining terabytes of bidding and performance data in computational advertising space
  • Providing statistical expertise and solutions to data problems
  • Creating models to predict future behaviour of users and clusters of users
  • Working with a team of software developers to turn those findings into self-learning systems
  • Deep understanding of machine learning algorithms, optimisation, concepts of statistical probability as well as proven experience of making them work in business environment
  • At least two years of coding experience in any programming language: Python, R, Matlab, Octave, etc.
  • Ability to process huge volumes of data and apply machine learning algorithms on 100GB+ data sets
  • Good understanding of prediction pitfalls and actions required to improve prediction quality
  • Data visualisation skills as well as ability to communicate research insights to developers, sales, leads
Nice to haves
  • Experience with online learning (constant stream of data and you need to retrain your models each week/day/hour)
  • Practical expertise in creating models for computational advertising space (real time bidding environment)
  • Experience with big data technologies (like Spark) and cloud computing (like AWS)
  • Understanding computational complexity and memory requirements
  • Master’s Degree in Mathematics, Statistics or Computer Science
  • Strong analytical skills, ability to set and focus on goals
  • Familiarity with bash programming, data processing and ML pipelines, Scala
  • Familiarity with mobile and web technologies: HTTP, web browsers, HTML, JavaScript, Android, iOS, etc.
  • Familarity with algorithms: factorization machines, deep neural network, factorization-machine supported neural networks, product-based neural network

Software Engineer - Big Data

Kraków, Poland

About role
  • Creating and maintaining applications that process vast amounts of data in real time (no batch jobs, no map reduce or lambda architecture)
  • Constantly pushing performance envelope of existing systems
  • Ensure high readability and low maintenance cost of all code created
  • Actively participate in design and decision-making processes of our products and teams
  • Investigate and implement new technologies related to data processing, application performance, performance monitoring, infrastructure
  • Openness to new technologies, invention
  • Advanced programming skills in Java
  • Understanding of java memory model and multithreading
  • A strong knowledge of English
Nice to haves
  • Experience with Amazon Web Services
  • Understanding of modern web app development
  • Linux systems development
  • Activity in open source and tech communities

Software Engineer - Developer in Test

Kraków, Poland

About role
  • Working closely with the development team to ensure a high quality product in continuous deployment environment
  • Creating and maintaining automated tests for e2e scenarios, components integration and single components
  • Creating and maintaining tests infrastructure
  • Constantly expanding knowledge about newest and popular testing libraries, tools, services and test methodologies
  • Strong programming skills
  • 3+ years experience in test automation
  • 2+ year experience in Java or other JVM based language software development
  • Experience or conceptual understanding of Integration Testing
  • Positive attitude, people orientation and excellent communication skills
Nice to haves
  • HTTP based Web services/REST experience
  • xUnit concept (TestNG/JUnit, etc.)
  • Test tooling - hamcrest/assertj/fest-assertions
  • Java libraries - Spring, guava, Apache Commons HTTP
  • Java 8
  • Amazon Web Services
  • Web development related technologies (HTML, JavaScript, AJAX, JSON)
  • Working experience with Selenium WebDriver

Software Engineer - Frontend

Kraków, Poland

About role
  • Developing features for single page applications used by thousands of clients every day
  • Be a major factor in design processes and technological uses
  • Break/Fix/Repeat
  • Locate and optimize performance and security issues
  • Deep understanding of JavaScript (language itself, design patterns, OOP, etc.)
  • Experience with any modern JavaScript application framework (we use Angular 4)
  • Experience with libraries for defining and loading JavaScript modules (we use webpack)
  • Familiarity with set of modern development tools for project building and dependency management (we use npm and webpack)
  • Experience in writing unit tests (we use Wallaby.js, Jasmine and Karma)
  • Good knowledge of templating (we use Pug / Jade and Handlebars)
  • Experience in CSS organisation for large-scale development using preprocessors (we use Less)
  • Knowledge of current trends and best practices in front-end architecture, including performance, security and usability
  • Code & Pixel Perfectionist – strong attention to detail
  • Good English, both written and spoken
  • Positive attitude
Nice to haves
  • Working knowledge of TypeScript and Angular
  • Familiarity of RxJS
  • Experience in writing end-to-end tests (we use Protractor)
  • Experience with CI solutions such as Jenkins or TeamCity
  • Experience with Amazon Web Services

Software Engineer - Java

Kraków, Poland

Key Responsibilities
  • As Software Engineer - Java you will design, implement and operate high performance software for serving and analysing Internet advertisements at scale
  • You will take active ownership of requirement analysis, architecture and implementation of your Team’s components and their operations in production
  • You will work with smart people who care about their craft and quality
  • You will collaborate with business and other stakeholders at Codewise to deliver software that solves right problems
  • Experience in design, deployment and maintenance of software in Java
  • Advanced skills in Java language programming including Java 8
  • Broad experience with JDK and common open source Java libraries
  • Advanced understanding of concurrency including different programming styles like events, reactive, threads, and their implementation in Java
  • Fluent command of developer workflow - git, CI, CD, maven and your IDE of choice
  • Experience with testing at all levels (unit, integration, acceptance) and test-first approach
  • Ability to write clean, maintainable code, applying best practices and patterns
  • Good understanding of networks and protocols, including IP, HTTP, modern API design and their Java interfaces
  • Good Linux skills including practical use of tools and ability to diagnose issues
  • Familiarity with common data structures and algorithms and their performance characteristics
  • Advanced problem solving skills
  • Good team player with “can do” attitude
  • Good communication skills
  • Written/spoken English
Nice to haves
  • Good understanding of architecture of distributed systems, including concepts of big data and working with eventual consistency
  • Practical experience with performance tuning, including understanding of file systems, GC, java memory model, low latency programming
  • Good understanding of infrastructure and operational aspects (monitoring, logging, load balancing, scaling, zero downtime deployment, troubleshooting, etc.)
  • Experience with Spring framework components
  • Experience with cloud (we use AWS)

Software Engineer - Java Infrastructure

Kraków, Poland

About role
  • Overarching goals:
  • Participate in shaping long-term vision for our infrastructure services
  • Automate common infrastructure tasks to limit human intervention
  • Maintain and improve continuous delivery platform
  • Build new state of the art tracing and logging infrastructure for our growing needs
  • Ensure high code quality standards
  • Main roles:
  • Being the central point of contact and subject matter expert when it comes to infrastructure services
  • Work closely with project Tech Leads to support product development, raising issues early
  • Design and implement scalable, maintainable infrastructure services
  • Participate in and enrich a detail oriented, collaborative culture focused on motivation and work satisfaction
  • Where applicable, ensure great user experience by focusing on detail, speed and fluency of software
  • Additional responsibilities:
  • Help others decide upon best infrastructure solutions be it communication protocol, load balancing approach or monitoring standards
  • Help to promote Codewise among developers community
  • Stay up to date when it comes to foundational technologies such as Linux kernel improvements, logging frameworks etc. Follow their advances, bugs and fixes
  • Openness to new technologies, invention
  • Advanced programming skills
  • Positive attitude, people orientation and excellent communication skills
  • A strong knowledge of English

Software Engineer - Machine Learning

Kraków, Poland

About role
  • Creating and maintaining applications that produce predictive models from offline data and apply them to real-time requests.
  • Constantly pushing performance envelope of existing systems.
  • Ensure high readability and low maintenance cost of all code created.
  • Actively participate in design and decision-making processes of our products and teams.
  • Investigate and implement new technologies related to data processing, application performance, performance monitoring, infrastructure
  • Openness to new technologies, invention
  • Advanced programming skills in Java
  • Knowledge of the issues of distributed computing and data processing
  • Understanding of java memory model and multithreading
  • Interest in Machine Learning/Data Science
  • A strong knowledge of English
Nice to haves
  • Experience with Amazon Web Services
  • Solid API Design skills
  • Experience with Machine Learning/Data Science frameworks
  • Activity in open source and tech communities

Business job offers


Business Development Manager, Publishers Zeropark

Kraków, Poland

About role
  • You will take responsibility for Zeropark’s publisher department. This is one of the most important positions in Zeropark, crucial to Codewise as a whole
  • You will be responsible for managing, maintaining and building up relationships worth millions of dollars in annual revenue
  • You will manage and develop the publisher team. You will have a very strong impact on the development of Zeropark’s publisher platform
  • You will have the chance to develop new business both horizontally (expanding existing partnerships and business lines) and vertically (introducing new business lines)
  • For this role, we are looking for candidates with relevant experience ONLY (i.e. people who have done a similar job in the past). If you have not, or if you’re unsure if you have, please do not apply
  • You will report directly to the managing director
Key Responsibilities
  • Manage, maintain and expand the current business relationships
  • New business development
  • Manage , develop, and grow the publisher team
  • Expand Zeropark’s offering to new product lines
  • Set up effective communication channels with clients and partners
  • Minimum 2+ years experience working in similar position
  • Proven results in similar line of work
  • Excellent written and spoken communication skills
  • Strong leadership skills
  • Team management experience
  • Ability to stay focused on measurable goals
  • Self drive / self motivation / ability to work in a loose framework with only rough guidelines (not specific set of detailed directions)

Senior Business Development Manager

Kraków, Poland

About role
  • As a Senior Business Development Manager, you will be responsible for seeking out, facilitating, and executing new business opportunities and deals for our market-leading SaaS applications and for one of the leading Ad Exchanges.
  • Your role will include:
  • Identify trendsetter ideas in Digital Marketing by researching industry and related events, publications, and announcements to develop exclusive value to company’s partners
  • Assessing the development potential of new markets and target groups
  • Evaluating new opportunities and preparing a business development plan
  • Developing strategic partnerships with other companies, vendors and affiliates in the industry
  • Attending international trade shows and conferences; networking with prospects
  • Coordinating the gathering of client’s feedback
  • Market analysis and researching new features
  • Co-owning the product development backlog
  • Working on the entire funnel, coordinating marketing and sales efforts in your markets
  • Optimizing the funnel using measurable metrics that you develop
  • The role will report directly to the Director of Product.
  • Minimum of 3 years’ experience in business development/marketing of technology related products
  • Excellent communication skills particularly face-to-face at trade shows/conferences
  • Fluent written and spoken English
  • Ability to stay focused on measurable goals
  • Strong analytical skills
  • Personal productivity ninja
  • Ability to individually research the market and estimate scope of opportunity
  • Experience in AdTech or MarTech industry with one or few of the following: Display/Video Advertising, Ad Exchanges, Publishers, Performance/Brand Advertisers, SaaS, Affiliate Marketing
  • Self Driven with proactive approach in day-to-day workflow
  • Ability to active listening and to understand prospect’s needs final goal through the funnel
Nice to haves
  • A proven pedigree in promoting SaaS software or Affiliate Cross-Channel Marketing
  • Experience selling to international clients, developing business in new territories
  • Good understanding of Internet concepts, browsers, mobile devices, basics of HTML, cookies, domains, browsers, etc.
  • Experience working with Google Analytics, growth hacking, optimizing SaaS conversion funnels

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Office Perks
If you’re applying for one of our current openings, what else can you expect, beyond joining one of the most talented and passionate group of individuals there is? Well here’s just a few examples of the additional benefits that come with being part of the Codewise family.

Massage iconMassage
With a masseuse on the payroll, book yourself in for a pummelling.
Gym iconGym
All the weights, gadgets & gizmos you need for your endorphin fix + our own onsite personal trainer.
Insurance iconInsurance
The wellbeing of our staff is paramount, so medical, life and travel cover come as standard.
Fruit, Sweets & Nutrition Bars iconFruit, Sweets & Nutrition Bars
An abundance of edible angiosperms, nutrition bars and chocolate available to nourish our teams.
Free Lunches do exist iconFree Lunches do exist
Whether you join the Fit Lab or break bread together on a Friday, at Codewise we do believe in a free lunch.
Standing Desk iconStanding Desk
Don't let the 9-5 give you posture problems. Optional standing desks set your spine free.
Games Room iconGames Room
Whether it’s board games, a PS4, table football, or ping pong, our games room has you covered.
Friday Counter Strike Hour iconFriday Counter Strike Hour
Join us as we shoot the cr*p out of each other in an exact replica of our HQ.
Music Room iconMusic Room
Aspiring Adeles, budding Biffy Clyros, or fledgling Fatboy Slims are well catered for in our full-equipped music room.
Yoga Classes iconYoga Classes
Codewise cares for your full wellbeing. Take time out to refresh your mind, body & spirit at our on site yoga classes.