
RTB House · Warsaw
Location: Poland We Are: RTB House is a global company that provides state-of-the-art marketing technologies for top brands and agencies worldwide. Its propri...
Location: Poland
RTB House is a global company that provides state-of-the-art marketing technologies for top brands and agencies worldwide. Its
proprietary ad-buying engine is the first in the world to be powered entirely by Deep Learning algorithms, enabling advertisers to
generate outstanding results and reach their goals at every stage of the funnel.
We are looking for a Backend Python Developer to join our internal team at RTB House. You will work on applications and tools that
directly support our real-time bidding business, collaborating with experienced engineers and product teams. This position is
ideal for developers who want to grow their skills, solve real-world problems, and build reliable software that makes a visible
difference.
monitoring, automation
technology companies in Europe
Apply now!
You don't need to tick every box to apply. If you are passionate about digital marketing, send us your CV, and we'll review it.
Senior Python Developer (Django, Wagtail) Zagreb, Split, Skopje, hybrid DEPT® is a Growth Invention company built to help the world’s most ambitious brands grow faster. Operating at the intersection of technology and marketing, our 4,000+ specialists deliver growth invention services across Brand & Media, Experience, Commerce, CRM, and Technology & Data. We’re 50|50 tech and marketing, partner-led, and first to move. Clients include Google, Lufthansa, Meta, eBay, and OpenAI. We have been certified B Corp and Climate Neutral since 2021. JOB PURPOSE We are looking for a Senior Python Django Developer who has been involved in a wide range of impactful projects and knows how to help clients achieve their goals at scale. KEY RESPONSIBILITIES As a Senior Developer, you understand that there is rarely a single solution to a problem. With your experience, you identify, evaluate, and implement the solution that best aligns with client needs, technical constraints, and long-term sustainability. You are confident explaining complex technical decisions in clear, accessible language to both technical and non-technical stakeholders. You take ownership of projects from concept to delivery, proactively identifying risks, inefficiencies, and opportunities for improvement early in the process. You play a key role in shaping architecture, improving internal processes, and ensuring high-quality standards across all deliverables. You are also a mentor to other developers, supporting junior and mid-level team members in their growth while fostering a collaborative and high-performing team environment. Alongside working on your own projects, you collaborate closely with front-end developers, designers, and external partners in integrated sprint teams to deliver exceptional digital products. WHAT WE ARE LOOKING FOR * a minimum of 4 years of Python backend web development experience (agency or product environment preferred) * Strong experience with Django * Experience with Wagtail CMS (or similar CMS platforms) is a plus * Proven experience designing, building, and maintaining robust, scalable APIs consumed by multiple third parties * Experience with complex system integrations across multiple external vendors * Experience with Git and modern development workflows * Solid understanding of database design, optimisation, and administration * Strong experience with testing and quality assurance (unit, integration, etc.) * Ability to own projects end-to-end, from planning through to delivery and support * Experience identifying issues early and proactively suggesting improvements to internal processes and workflows * Confidence to challenge assumptions, contribute to technical discussions, and collaborate with external teams and vendors * Experience mentoring junior and mid-level developers, providing guidance, code reviews, and technical leadership across projects * A team-player mindset with strong initiative and leadership qualities * Working proficiency in English WE OFFER * Transparent career development and pay; * A flexible, hybrid working policy * A rewarding, supportive and healthy company culture. * Supplemental and additional health insurance; * Referral bonus program. * Stay happy and healthy with a contribution to your health through the OpenUp platform, and a multisport programme; * A reputation for doing good. DEPT® has been a Certified B Corp® since 2021. * Awesome clients. Whether big, small, local or global — at DEPT® you’ll get the opportunity to work with all of them. And we celebrate all of our successes together! * The opportunity for possibility. We want to enable you to do what you do best and help you develop your skills further with training, development and certifications. * Global annual DEPT® Cares Month in which employees come together and donate their skills to support local charities WHY DEPT®? We are a Growth Invention company built to help the world’s most ambitious brands grow faster. Operating at the intersection of technology and marketing, we create what is next by pioneering ideas, acting fast, and moving further because standing still just is not in our DNA. We are drawn to people who stay curious, move with intent, and never stop inventing. Our culture runs on three values: better together, relentlessly curious, and get sh*t done. It is how we work, how we grow, and how we make things that matter. At DEPT®, you will find the freedom to explore, the space to collaborate, and the trust to make a real impact for our clients, for each other, and for the world we are helping to build. DIVERSITY, EQUITY & INCLUSION At DEPT®, we take pride in creating an inclusive workplace where everyone has an equal opportunity to thrive. We actively seek to recruit, develop, nurture, and retain talented individuals from diverse backgrounds, with varying skills and perspectives. Not sure you meet all qualifications? Apply, and let us decide! Research shows that women and members of underrepresented groups tend not to apply for jobs when they think they may not meet every requirement, when in fact they do. We believe in giving everyone a fair chance to shine. We also encourage you to reach out to us and discuss any reasonable adjustments we can make to support you throughout the recruitment process and your time with us. Want to know more about our dedication to diversity, equity, and inclusion? Check out our efforts here.
We are seeking someone who thrives in cross-functional collaboration, has a passion for innovation, and possesses technical skills in data engineering, DevOps, and software development. At ALTEN we collaborate with some of Sweden's most prominent technology companies – including leading players in energy, industry, and digitalization – and we are looking for someone who thrives at the intersection of technology, business, and leadership. WHAT DO WE OFFER? As a consultant at ALTEN, you'll have the opportunity to work on challenging and exciting projects with some of our key clients, with: Technical challenges and development opportunities. An inspiring community and the chance to contribute to a sustainable future. Supportive and coaching leadership. The possibility to work across various industries where our clients operate. A personal training budget for internal or external courses. ABOUT THE ROLE We are looking for a passionate professional to develop and maintain data tools and products, with a focus on optimizing workflows and continuously improving our platforms. You will play a key role in designing and evolving solutions that range from data engineering and visualization to implementing AI applications to automate and enhance internal processes. Your responsibilities will include: Contributing to the development of the CI/CD Flow Metrics & Metadata Platform, including data pipeline creation, analytical dashboards, and refining use cases (DevOps knowledge is valued). Developing and maintaining AI applications to optimize workflows within the organization. Managing tools for generating and updating internal documentation portals, as well as developing solutions for requirements and test verdicts traceability. Maintaining the infrastructure hosting the department’s data tools and products. You will work with: Data products: Analytics dashboards, databases, traceability tools. CI/CD pipeline development: Including automated test execution and reporting. Automated test case libraries for gate and qualification stages. Software-in-the-Loop framework functionalities and deployment tools. User guides and training materials for development teams. Tech we use daily: AI: RAG, AI agents, OpenAI APIs CI Tools: Cynosure, Jenkins, Zuul, Ansible, Bazel Version Control: Git/Gerrit Visualization: Grafana, PowerBI, Javascript Languages: Python/Pytest, YAML, Bash, C/C++ Binary Management: Artifactory Miscellaneous: CANoe, Docker, AWS Cloud: Microsoft Azure Test tool framework: Meritorious to have Snok (VCC proprietary tool) experience ASPICE knowledge ABOUT ALTEN ALTEN is one of Europe’s largest technology and IT consulting companies, with over 57,000 employees across approximately 30 countries. Our engineers carry out complex and highly technical projects throughout the entire product development chain for leading companies in several industries including Automotive, Defense & Security, Energy, Industrial Equipment, Public Sector, and Life Sciences. In Sweden, we are approximately 1,300 dedicated employees spread across 9 offices in cities ranging from Lund in the south to Skellefteå in the north. For the fifth year in a row, ALTEN has been named one of Sweden’s most attractive employers by Karriärföretagen for five consecutive years — an award for companies offering unique career and development opportunities. Welcome to read more about us at alten.se
IHRE AUFGABEN * Du entwickelst Features und Verbesserungen für das Backend unserer SaaS-Applikation in Django / Django REST Framework und arbeitest an weiteren Microservices (u.a. in FastAPI) mit – dabei setzt du konsequent auf AI-gestützte Entwicklungstools wie GitHub Copilot oder Cursor, um schneller und effizienter zu liefern. * Als erfahrener Softwareentwickler stimmst du dich mit deinen Kollegen im Backend Team und allen relevanten Stakeholdern (Produktmanagement, Frontend Development, UX, Vertrieb etc.) ab. * Du treibst unsere AI First Development Culture aktiv mit voran: Du erforschst neue Tools, teilst Best Practices im Team und hilfst dabei, AI sinnvoll in unsere täglichen Workflows zu integrieren. * Du unterstützt bei der technischen Dokumentation des Produkts. * Du führst AI-unterstützte Code Reviews durch, hilfst beim Einsatz von AI-Tools im Entwicklungsalltag und unterstützt bei der Verteilung von Tickets und der Steuerung der Entwicklung. IHR PROFIL * Ein abgeschlossenes Studium der Informatik, eines verwandten Studiengangs mit IT-Fokus, oder eine abgeschlossene Ausbildung zum Fachinformatiker/-in Anwendungsentwicklung. * Du hast mindestens 3 Jahre relevante Berufserfahrung in Vollzeit gesammelt. * Du hast bereits mehrjährige Erfahrungen mit Python und der Backend-Entwicklung mit Django / Django REST Framework; Erfahrung mit weiteren Frameworks wie FastAPI ist ein Plus. * Du bist sicher im Design und der Entwicklung von REST-APIs sowie im Umgang mit relationalen Datenbanken (z.B. PostgreSQL) und ORM-basiertem Datenmodellieren. * Du arbeitest routiniert mit AI-gestützten Coding Tools (z.B. GitHub Copilot, Cursor oder vergleichbare) und weißt, wie man deren Output kritisch bewertet und sinnvoll in bestehende Workflows integriert. * Du hast Lust, unsere AI First Kultur mitzugestalten – du probierst neue Tools aus, teilst deine Erfahrungen und hilfst dem Team, smarter zu arbeiten. * Neben dem Home-Office schätzt du auch den Austausch mit Kollegen und das Teamgefühl vor Ort. WARUM WIR? Bei Athereon GRC entwickeln wir smarte Software, die Unternehmen, Organisationen und Institutionen aus Privatwirtschaft, öffentlichem Sektor und Sozialwesen in den Bereichen Informationssicherheit und Compliance voranbringt. Als agiles und schnell wachsendes Unternehmen verbinden wir technologische Exzellenz mit echter Hands-on-Mentalität – hier zählt Dein Beitrag wirklich. Bringe Deine Expertise und Persönlichkeit in unser Team ein – wir suchen Menschen, die für IT brennen, querdenken und Lust haben, Verantwortung zu übernehmen. Unser Kundenportfolio reicht von Weltmarktführern über Hidden Champions bis hin zu innovativen Mittelständlern aus verschiedensten Branchen – so wird es garantiert nie langweilig.