Mid Level Platform Engineer (m/w/d)

Adsquare

INTRO At Adsquare, our mission is driven by our core focus: * Passion – Solving complex challenges with great people, tech, and data. * Niche – Location Intelligence for Programmatic Advertisers. Our core values are integral to everything we do: * Drive: We turn ambition into action. * Resilience: We adapt, persevere, and grow stronger. * No BS: We value honesty, transparency, and clear communication. * Humble: We choose modesty over vanity and let results speak for themselves. * Moral Compass: We do the right thing with fairness, integrity, and respect. We seek candidates who not only bring top-tier technical expertise but also embody these values in every aspect of their work. ABOUT THE TEAM We are looking for a Staff Data Analytics Engineer to join our technical proficiency track. This is a highly technical, Individual Contributor (IC) role. You will act as the Technical Lead for your squad—making critical architectural decisions, defining engineering standards, and driving cross-squad collaboration—without the responsibilities of people management. You will be the technical north star for the team, approaching extremely complex data problems with a rigorous software engineering mindset. You will design, build, and oversee production-grade data platforms that process massive volumes of geo-spatial data, audience attributes, and geo-location time-series data. YOUR PROFILE We are looking for an exceptional engineer who has a proven track record of acting as a technical leader and domain expert in heavy data environments. Must-Have Skills: * 7+ years of experience in Data Engineering, Analytics Engineering, or Backend Development with a deep focus on massive data systems. * Geo-Spatial & Time-Series Expertise: Proven, hands-on experience handling massive datasets specifically involving geo-spatial (GIS) data, audience attributes, and high-frequency time-series data. * Advanced Software Engineering (Python): Mastery of Python beyond standard data scripting. You write highly modular, object-oriented code. You have deep, practical experience with Test-Driven Development (TDD), mocking, exception handling, and performance profiling, functional programming. * Architectural Vision: Deep expertise in designing scalable data architectures using both relational and horizontally scalable data warehouses/lakehouses (e.g., Snowflake, Redshift, Athena, StarRocks, Iceberg). You deeply understand query execution plans, partitioning, clustering, and cloud cost governance. * Big Data Frameworks: Extensive experience with large-scale data processing frameworks (e.g., Apache Spark, PySpark, AWS EMR, Glue) to handle massive throughput. * Expert SQL & dbt: You design scalable, robust data models (using Jinja, macros, incremental strategies) that serve as the foundation for our entire analytics layer. * AWS Cloud Native & IaC: Hands-on experience building architectures in AWS (e.g.: AWS Lambda, AWS Batch, Glue, StepFunctions, S3, EC2, ECS, ECR, Fargate) and deploying them using Infrastructure as Code (Terraform). * Leadership Skills: Superb organizational and communication skills. You can distill complex architectural trade-offs for non-technical stakeholders and drive technical consensus among your engineering peers. Nice-to-Have Skills: * Polyglot Programming: Experience with a compiled or strongly typed language (e.g., Scala, Go, Kotlin, C++ or Java). * Advanced Orchestration: Experience defining complex dependency graphs in tools like Airflow, Dagster, or Prefect. WHAT YOU WILL DO * Technical Leadership & Architecture: Act as the principal architect for your squad. You will design horizontally scalable, cost-efficient, production-grade data solutions capable of handling TB-scale, highly dimensional datasets. * Engineering Excellence & TDD: Champion rigorous software engineering principles. You will lead the adoption of Test-Driven Development (TDD), CI/CD workflows, and clean code architectures. You ensure our codebase is resilient, testable, and maintainable. * Cross-Squad Impact: Drive technical alignment beyond your immediate team. You will act as an engineering ambassador, solving architectural issues that span multiple squads, keeping our technical processes synchronized, and aligning your squad's work with global engineering priorities. * Domain Mastery: Leverage your deep expertise to build high-value data products on top of location signals and audience attributes. You don't just process data; you deeply understand its geographic and time-series nature to unlock its business value. * Mentorship & Code Quality: Be the technical mentor for Senior, Mid, and Junior engineers. Through highly insightful code reviews, architectural feedback, and pair programming, your input will consistently be the source of others’ learning and growth. * Data Observability: Proactively build monitoring and alerting frameworks at the infrastructure level to catch anomalies in our multi-terabyte data streams before they impact downstream products. WHY US? On top of a competitive package… * We are open to flexible work models: we work on a hybrid mode and remotely  * To encourage education and professional growth, we offer an individual yearly budget of 1.200€ * You are entitled to 30 vacation days per year * We offer Urban Sports Club membership, company pension scheme * Regular team events and company events organised by our People team (Trust us, they know how to throw a party!) * We equip you with the latest hardware and provide you with all the tools you need to thrive SALARY RANGE (ANNUAL ON-TARGET EARNINGS) 90,000 - 100,000 euros RECRUITING PROCESS COULD REQUIRE ON SITE STEPS For technical roles (Data, Engineering, and Product), candidates are encouraged to upload any technical certifications referenced in their CV via the "Other Documents" section of the application form. Alternatively, certification documents may be submitted after the first technical interview. Any certifications listed on the CV must be provided and successfully validated before proceeding to the second technical interview stage. * Step 1: Short 30-min take-home technical quiz. * Step 2: Value-based interview (30 mins). * Step 3: Deep-dive technical interview (1.5 hours) with the Data team. * Step 4: Practical data-crunching challenge. * Step 5: Team Meet & Greet — the final step to ensure we’re a great fit for each other. WORK MODEL Hybrid DESIRED START DATE Asap

Talon.One

ABOUT TALON.ONE:   Talon.One is the most powerful incentives engine that unifies loyalty, promotions and gamification into one holistic platform. Backed by enterprise-grade security and scalability, Talon.One empowers companies to build personalized, profitable promotions and loyalty programs using any data. Today, over 250 of the world’s most-loved brands including Adidas, Sephora and Carlsberg work with Talon.One to drive deeper engagement and lasting loyalty with their customers.   ABOUT THE TEAM: Our development team consists of specialists in frontend, backend, QA, product, and visual design. We work in small cross-functional teams that give everybody insight and hands-on experience of what everyone else is doing. Each team is self-sustained, autonomous, and responsible for a specific feature or area in our platform. We believe in strong collaboration, open communication, and mentoring to allow bi-directional growth. We are working to make Talon.One an inclusive workplace because we believe it is the right thing to do and because we want to have a positive impact on the entire tech industry. We are currently looking for a Senior Backend Engineer to join our development teams. You will work closely with our product people to design the right solutions to our challenging problems while collaborating, mentoring, and supporting the other team members. For this position, we need professionals who are already based in Berlin or willing to move to Berlin.   ONCE YOU ARE HERE YOU WILL: * Lead and deliver features of any size — independently or by coordinating effort across the squad * Drive technical discovery and solution design in collaboration with your PM and Tech Lead * Actively share technical knowledge across the Backend Guild — through discussions, documentation, and knowledge-sharing sessions * Participate in cross-squad (Backend Guild) brainstorming sessions and problem-solving discussions * Mentor and unblock junior and mid-level engineers through pairing, code review, and deliberate feedback * Champion improvements to quality, maintainability, and engineering process within your squad and beyond * Be a crucial member in a small cross-functional team (a squad) * Contribute effectively during all Scrum rituals, facilitation of process maturity increments, and engineering best practices initiatives * Regularly participate in code reviews and provide constructive feedback * Consistently monitor the maintenance of quality standards and proactively recommend engineering or process improvements   WHAT WE NEED YOU TO BRING TO THE TABLE: * 6+ years of experience as a Backend Developer building enterprise-grade web applications — Go strongly preferred, but we're also open to strong backgrounds in other mainstream backend languages (e.g., Node.js, Java, C#, Python). * Basic working familiarity with Go — you don't need deep expertise, but you should be comfortable reading Go code and understanding its core syntax and idioms. * If your background is primarily in another stack: during interviews, you'll need to demonstrate you can pick up Go quickly and show a genuine willingness to build your career in Go — our backend stack (Go) isn't changing, so this is a hard requirement, not a nice-to-have. * Strong architectural instincts — you understand tradeoffs and can articulate them clearly to technical and non-technical stakeholders * The ability to mentor others without being asked — you notice where people are stuck and act on it * A guild mindset: you contribute to backend-wide discussions, not just your squad's backlog * In-depth knowledge of REST API design, PostgreSQL, and Testing Techniques * Experience building scalable, maintainable, and performant large-scale applications * A proven track record of designing the architecture of multiple applications or complex features end-to-end * Hands-on experience owning maintenance, performance, and security concerns for production systems * Strong tendency towards implementing modern best practices like pair-programming sessions, unit and integration tests, adaptation of AI and automation, refactoring, SOLID principles, security best practices, documentation as code, regular knowledge sharing, etc. * Big-picture thinking; You collaborate with non-developers to clarify requirements and help plan projects, with an eye on the overall impact on the business & product * A willingness to learn about and contribute to the whole stack is essential * A team-first attitude; As a group, we strive to leave egos at home * Empathy for your customers and your colleagues   ABOUT TECHNOLOGY:  * Kubernetes running on Google Cloud * PostgreSQL * We use Go for our API, core logic, and internal tooling * TypeScript, React, Redux, and CSS modules for our web application * Cypress for automated end-to-end testing * Other odds & ends in JavaScript and shell script   WHAT'S IN IT FOR YOU: * A Research and Development Department of 90+ of engineers, product managers and product designers in Berlin * Leaders with 8+ years of experience building our promotions engine  * €1,000 annual learning budget and free German language courses to boost your skills * 30 days of annual leave, plus extra paid days for your birthday and moving day * Home office setup budget, a monthly home office allowance * Freedom to work from abroad for up to 90 days worldwide! * Mental health support with nilo.health and a discounted Urban Sports Club membership * 20% company subsidy on your pension contributions * Subsidised BVG public transport ticket and a dog-friendly Berlin office where your furry friend is welcome * Lease your ideal bike through BusinessBike

Talon.One

ABOUT TALON.ONE:   Talon.One is the most powerful incentives engine that unifies loyalty, promotions and gamification into one holistic platform. Backed by enterprise-grade security and scalability, Talon.One empowers companies to build personalized, profitable promotions and loyalty programs using any data. Today, over 250 of the world’s most-loved brands including Adidas, Sephora and Carlsberg work with Talon.One to drive deeper engagement and lasting loyalty with their customers.   ABOUT THE TEAM: Our Research and Development department is made up of cross-functional teams of Developers, Interaction Designers, QA Engineers, and Documentation specialists, all collaborating under the guidance of Product and Engineering Managers. Each team owns a specific area of our platform. We work with relative autonomy, encourage original ideas, foster professional growth, and believe that quality at every stage is of utmost importance. We’re looking for a QA Engineer who will be an advocate for quality from the very start of the development process. In this role, you’ll collaborate closely with all functions to shape testing strategies, ask the right questions early, and ensure that robust test coverage exists as features are developed. Rather than merely focusing on testing completed changes, you’ll embed quality into our development process, championing best practices, improving test automation, and ensuring that great software is continuously delivered.   ONCE YOU ARE HERE YOU WILL: * Become an expert in the Talon.One product, and the foremost expert in the area for which your team is responsible. * Collaborate with product, design, and engineering functions to ensure our delivered features are consistently of a high quality. * Set the test strategy, engage critically with all functions from the outset of each feature. * Ensure we have design and behavioral consistency between features, and strong, efficient test coverage at every level. * Determine which test scenarios should be included in our suite of end-to-end automated tests, and implement those using Cypress. * Willingness to proactively help junior Quality Engineers, provide timely feedback, and guide them to success. Contribute to Mentorship Programs and onboarding new joiners.   WHAT WE NEED YOU TO BRING TO THE TABLE: * Ability to communicate effectively and clearly in English, and precisely describe complex interactions * Ability to architect a strong Test Strategy * Strong track record in advocating for quality at all levels of development process * 3 - 6+ years of experience delivering quality web applications with test automation, including REST APIs/GraphQL   ABOUT TECHNOLOGY:  * Kubernetes running on Google Cloud * PostgreSQL * Golang for our API, core logic, and internal tooling * TypeScript, React, Redux, and CSS modules for our web application * Cypress for automated end-to-end testing   WHAT'S IN IT FOR YOU: * A Research and Development Department of 100+ of engineers, product managers and product designers in Berlin * Leaders with 8+ years of experience building our promotions engine  * €1,000 annual learning budget and free German language courses to boost your skills * 30 days of annual leave, plus extra paid days for your birthday and moving day * Home office setup budget, a monthly home office allowance * Freedom to work from abroad for up to 90 days worldwide! * Mental health support with nilo.health and a discounted Urban Sports Club membership * 20% company subsidy on your pension contributions * BVG public transport ticket and welcome your furry friend in our dog-friendly Berlin office! * Lease your ideal bike through BusinessBike