Mid Data Platform Engineer

🏢 Summary: Senior Data Platform Engineer role focused on designing and maintaining robust, scalable data platforms supporting public health and food security initiatives. The position involves building reliable ETL/ELT pipelines, structuring layered data systems, and making architectural decisions across batch and streaming workflows. Full-time, Warsaw-based (hybrid) role with significant ownership and cross-functional collaboration. 🗂️ Requirements: Experience designing and maintaining ETL/ELT data pipelines, Understanding of data reliability concepts including idempotency, backfills, and late data handling, Ability to design layered data architectures (raw, cleaned, curated), Experience choosing between batch, micro-batch, and streaming approaches, Strong software engineering fundamentals and version control, Ability to design clear software architectures, Experience working on UNIX or OSX-based systems, Professional English proficiency (C1 or higher), Full-time availability in Warsaw with hybrid on-site presence 📃 Skills: Python, Django, DBT, Dagster, Luigi, Clickhouse, Docker, Terraform, Kubernetes, Nix, SQL, ETL, ELT, UNIX, Git, Streaming, Batch, OLAP, DimensionalModeling, Idempotency 🏢 Description: QED ( https://qed.ai ) is a tech company focused on public health and food security in Sub-Saharan Africa. We build the digital infrastructure and AI used at the intersection of aid and scientific inquiry, including surveillance of HIV/malaria/TB, and nutrient analysis of crops and soils, working at national-scale in several African countries. Our funding comes from multiple philanthropic and governmental organizations, including the Global Fund, Gates Foundation, and the CDC. We are looking for a senior Data Platform Engineer to join our team in Warsaw. Desired skills include: experience designing and maintaining data pipelines using ETL and/or ELT approaches, with the ability to reason about trade-offs rather than defaulting to a single pattern understanding of data pipeline reliability concepts, including idempotency, backfills, and handling late or corrected data ability to structure data systems into clear layers (e.g. raw, cleaned, curated) and reason about their different purposes and guarantees experience deciding between batch, micro-batch, and streaming approaches based on latency, correctness, and operational complexity strong background in software engineering, version control, writing readable code and tests, robust design, and basic data structures and algorithms ability to conceive logical software architectures and express yourself clearly, both verbally and in writing willingness to tackle a wide array of problems and technologies willingness to participate in regular design sessions, code reviews, and working in teams development primarily on UNIX-based or OSX-Darwin platforms working proficiency (≥C1) in speaking, reading, and typing English (≥45 words per minute) willingness and interest in working with people from other cultures emotional resilience and social intelligence and you have to care about the work that you do and you have to be optimistic at least sometimes, although pessimism tends to be useful Below are additional skills that are a bonus, but are not required: understanding of analytical data modeling concepts, including how to transform raw data into analytics-ready datasets and define clear data semantics for downstream consumers experience with Python, Django, DBT, Dagster, Luigi or Clickhouse experience with containerization (Docker), Terraform, Kubernetes or Nix knowledge and experience with data warehousing, online analytical processing, metadata management, dimensional modeling, and relational database theory experience with programming and/or math competitions product-oriented mindset willingness to go on an adventure domain knowledge and/or interest in the sustainable development goals, particularly in public health, agriculture, and assisting developing countries What can you expect: unusual, socially conscious projects significant ownership a mix of product, internal platform, and client integration work ability and encouragement to explore technologies other than your main expertise optional travel to learn more about problems we're trying to solve Requires a full-time commitment physically based in Warsaw, Poland, with a hybrid of remote and in-person work throughout the week . We expect at least 2-3 days per week in the office. The working hours are flexible, for example you do not need approval to take out a small chunk in the middle of the day to handle some personal business.

🏢 Summary: Mid Software Engineer role focused on building and maintaining digital infrastructure and AI systems for large-scale public health and food security projects. The position involves designing robust architectures, writing high-quality tested code, and contributing to product, platform, and integration work. Full-time hybrid role based in Warsaw with significant ownership and exposure to diverse technical challenges. 🗂️ Requirements: Strong software engineering background, Proficiency with version control systems, Ability to write readable, well-tested code, Knowledge of robust software design principles, Understanding of data structures and algorithms, Ability to design logical software architectures, Experience developing on UNIX-based or OSX systems, English proficiency at C1 level or higher, Full-time availability in Warsaw with hybrid on-site presence (2–3 days per week) 📃 Skills: Git, UNIX, OSX, Algorithms, DataStructures, Testing, Architecture, Python, Django, React, Android, PyTorch 🏢 Description: QED ( https://qed.ai ) is a tech company focused on public health and food security in Sub-Saharan Africa. We build the digital infrastructure and AI used at the intersection of aid and scientific inquiry, including surveillance of HIV and malaria, and nutrient analysis of crops and soils, working at national-scale in several African countries. Our funding comes from multiple philanthropic and governmental organizations, including the Global Fund, Gates Foundation, CDC, and USAID. We are looking for a mid software engineer to join our team in Warsaw. Desired skills include: strong background in software engineering, version control, writing readable code and tests, robust design, and basic data structures and algorithms ability to conceive logical software architectures and express yourself clearly, both verbally and in writing willingness to tackle a wide array of problems and technologies willingness to participate in regular design sessions, code reviews, and working in teams development primarily on UNIX-based or OSX-Darwin platforms working proficiency (≥C1) in speaking, reading, and typing English (≥45 words per minute) willingness and interest in working with people from other cultures emotional resilience and social intelligence and you have to care about the work that you do and you have to be optimistic at least sometimes, although pessimism tends to be useful Below are additional skills that are a bonus, but are not required: experience with Python, Django, React, Android, or PyTorch experience with computer hardware, electronics, or physics experience with programming and/or math competitions product oriented mindset willingness to go on an adventure domain knowledge and/or interest in the sustainable development goals, particularly in public health, agriculture, and assisting developing countries What can you expect: unusual, socially conscious projects little bureaucracy significant ownership a mix of product, internal platform, and client integration work ability and encouragement to explore technologies other than your main expertise optional travel to learn more about problems we're trying to solve Requires a full-time commitment physically based in Warsaw, Poland, with a hybrid of remote and in-person work throughout the week. We expect at least 2-3 days per week in the office. The working hours are flexible, for example you do not need approval to take out a small chunk in the middle of the day to handle some personal business.

🏢 Summary: Senior Software Engineer role focused on building and scaling digital infrastructure and AI systems for public health and food security projects. The position involves designing robust architectures, writing high-quality code and tests, and contributing across product, platform, and client integration work. Full-time hybrid role based in Warsaw with significant ownership and technical impact. 🗂️ Requirements: 5+ years of software engineering experience, Strong software engineering fundamentals, Proficiency in version control, Ability to write readable, well-tested code, Knowledge of data structures and algorithms, Experience designing robust software architectures, Experience working on UNIX-based or OSX systems, Ability to participate in design sessions and code reviews, Working proficiency in English (C1 or higher), Full-time availability in Warsaw with hybrid on-site presence (2–3 days per week) 📃 Skills: Git, UNIX, OSX, Python, Django, React, Android, PyTorch, Algorithms, DataStructures, Testing, Architecture 🏢 Description: QED ( https://qed.ai ) is a tech company focused on public health and food security in Sub-Saharan Africa. We build the digital infrastructure and AI used at the intersection of aid and scientific inquiry, including surveillance of HIV and malaria, and nutrient analysis of crops and soils, working at national-scale in several African countries. Our funding comes from multiple philanthropic and governmental organizations, including the Global Fund, Gates Foundation, CDC, and USAID. We are looking for a senior software engineer to join our team in Warsaw. Desired skills include: strong background in software engineering, version control, writing readable code and tests, robust design, and basic data structures and algorithms at least 5 years of experience ability to conceive logical software architectures and express yourself clearly, both verbally and in writing willingness to tackle a wide array of problems and technologies willingness to participate in regular design sessions, code reviews, and working in teams development primarily on UNIX-based or OSX-Darwin platforms working proficiency (≥C1) in speaking, reading, and typing English (≥45 words per minute) willingness and interest in working with people from other cultures emotional resilience and social intelligence and you have to care about the work that you do and you have to be optimistic at least sometimes, although pessimism tends to be useful Below are additional skills that are a bonus, but are not required: experience with Python, Django, React, Android, or PyTorch experience with computer hardware, electronics, or physics experience with programming and/or math competitions product oriented mindset willingness to go on an adventure domain knowledge and/or interest in the sustainable development goals, particularly in public health, agriculture, and assisting developing countries What can you expect: unusual, socially conscious projects little bureaucracy significant ownership a mix of product, internal platform, and client integration work ability and encouragement to explore technologies other than your main expertise optional travel to learn more about problems we're trying to solve Requires a full-time commitment physically based in Warsaw, Poland, with a hybrid of remote and in-person work throughout the week. We expect at least 2-3 days per week in the office. The working hours are flexible, for example you do not need approval to take out a small chunk in the middle of the day to handle some personal business.

🏢 Summary: Hands-on Lead Infrastructure Engineer role responsible for defining and evolving infrastructure architecture for national-scale public health and food security systems. The position combines technical leadership with active building and operating of declarative, mostly bare-metal infrastructure across multiple countries. You will shape long-term technical direction, mentor engineers, and ensure reliable, scalable systems. 🗂️ Requirements: 6+ years of infrastructure or systems engineering experience, 1–2+ years in a technical lead role, Experience designing and operating Linux-based infrastructure, Strong knowledge of networking, databases, containers, and security, Experience with declarative infrastructure and Infrastructure as Code, Ability to design architecture and make long-term technical decisions, Experience planning and deploying bare metal infrastructure, Strong software engineering fundamentals (version control, testing, design, algorithms), Professional English proficiency (C1+), Full-time availability in Warsaw with hybrid work model 📃 Skills: Linux, Networking, Databases, Containers, Security, NixOS, Kubernetes, k3s, Terraform, Bare-metal, Git, Testing, Algorithms, Hardware, IaC 🏢 Description: QED ( https://qed.ai ) is a tech company focused on public health and food security in Sub-Saharan Africa. We build the digital infrastructure and AI used at the intersection of aid and scientific inquiry, including surveillance of HIV and malaria, and nutrient analysis of crops and soils, working at national-scale in several African countries. Our funding comes from multiple philanthropic and governmental organizations, including the Global Fund, Gates Foundation, CDC, and USAID. We are looking for the Lead Infrastructure Engineer to shape and evolve the technical foundation that powers our systems. This is a hands-on leadership role where you will define architectural direction, elevate engineering standards, and stay deeply involved in building and operating infrastructure. As a team lead, you will guide critical decisions, mentor engineers, and drive a long-term vision for reliable systems operating across multiple countries. Your responsibilities will include: owning and evolving the infrastructure architecture, tooling strategy, and long-term technical decisions working with declarative tooling (NixOS + k3s + terraform) mostly on top of bare metal servers, with some cloud sprinkled in planning infrastructure layout, selecting components, testing, and deploying them planning and leading the building of bare metal infrastructure for deployment in low to middle income countries handling communication (both internal and external) participating in hiring, evaluate and interview candidates optional traveling to learn more about problems we're trying to solve and set up hardware in local data centers The role requires a full-time commitment physically based in Warsaw, Poland, with a hybrid of remote and in-person work throughout the week. We expect at least 2-3 days per week in the office. The working hours are flexible, for example you do not need approval to take out a small chunk in the middle of the day to handle some personal business. Desired skills include: 6+ years of infrastructure or systems engineering experience, with at least 1–2 years in a lead role demonstrated ability to scope, plan, and delegate technical work and to hold yourself and others accountable for outcomes broad knowledge of technology: Linux internals, networking, databases, containers, hardware performance, security; we value genuine depth and curiosity over checklist coverage strong software engineering fundamentals: version control, readable code, tests, robust design, basic data structures and algorithms working proficiency in English (≥ C1 spoken and written; ≥ 45 wpm typed) clear thinker who can express ideas well, both in writing and in conversation social intelligence and emotional resilience; you will work across cultures, time zones, and high-stakes situations Below are additional skills that are a bonus, but are not required: experience with NixOS, Kubernetes, Terraform experience with bare metal, including hardware selection and on-site setup ethical hacking experience experience with programming and/or math competitions willingness to go on an adventure domain knowledge and/or interest in the sustainable development goals, particularly in public health, agriculture, and assisting developing countries What can you expect: significant ownership, direct influence on team structure, standards, and hiring fully declarative infrastructure, strong (but not absolute) avoidance of anything manual no helm soup unusual, socially conscious projects low bureaucracy

🏢 Summary: IT Operations Specialist responsible for global hardware lifecycle management, access control, and security enforcement across distributed teams and field operations. The role covers procurement, configuration, inventory tracking, and management of Windows, Linux, and Android devices, including a custom Android MDM platform. Involves maintaining secure access practices and potentially supporting server infrastructure and on-site deployments. 🗂️ Requirements: Minimum 4 years of IT administration experience, Experience with hardware lifecycle management and global device logistics, Proficiency in Git, scripting, and networking fundamentals, Experience managing Windows, Linux, and Android devices, Knowledge of access management and security best practices (FDE, secrets handling), Experience with onboarding and offboarding processes, Working proficiency in English (C1 or higher), High level of integrity and trustworthiness 📃 Skills: Git, Scripting, Networking, Windows, Linux, Android, MDM, Kubernetes, VM, Bare-metal, FDE 🏢 Description: QED ( https://qed.ai ) is a tech company focused on public health and food security in Sub-Saharan Africa. We build the digital infrastructure and AI used at the intersection of aid and scientific inquiry, including surveillance of HIV and malaria, and nutrient analysis of crops and soils. Our work happens at a national scale, and our funding comes from partners like the Gates Foundation, CDC, and USAID. As we scale, we are looking for a highly trusted IT Operations Specialist to join our Warsaw team. The Role In this role, you’ll be responsible for the lifecycle of the hardware that powers our development and field operations across the globe. You will also be responsible for managing digital access internally, as well as externally. We are looking for a versatile professional with a background that spans both hardware and software administration. Your core responsibilities will include: Global procurement and logistics: Sourcing, configuring, and distributing laptops (Windows/Linux) and mobile devices for our staff in Poland and across our African offices. Keeping track of the inventory: Knowing exactly where every piece of QED equipment is, what condition it’s in, and what happens the moment it breaks. Security enforcement: Auditing and enforcing our personal computer security policy (FDE, handling of secrets). Access Control: Handling onboarding, offboarding, and access to our internal platforms. Android MDM: Managing our custom Mobile Device Management (MDM) service, built on the Android Management API. You will handle the procurement and logistics of devices used in the public health projects in the field. While this is an IT Operations role, the ability to read, write, and maintain the code of our custom MDM platform would be a big bonus. Requirements: High level of trust: You will have access to the most sensitive layers of our operation. Absolute integrity is non-negotiable. Experience with IT administration: We require at least 4 years of industry experience. We expect a proactive, opinionated approach. You should have a clear vision and knowledge of modern tooling and the ability to establish robust conventions for access management and security. Technical Proficiency :  Proficiency in core technologies, including Git for version control, scripting and networking fundamentals. Versatility: Comfort managing a fleet of Windows, Linux, and Android devices. Language: Working proficiency (≥C1) in English. Bonus: server infrastructure and willingness to travel Our core medical services run on custom Kubernetes clusters hosted across a mix of VM providers and bare‑metal servers in Sub-Saharan Africa and beyond, and we are rapidly expanding to new countries. While not a core requirement, technical expertise to physically install, cable, and configure server racks on-site is a big plus. If you have an adventurous soul and a willingness to travel to our African offices to manage these hardware deployments firsthand, it would be an additional advantage (this added commitment would also come with higher pay). What you can expect Multisport Flexible work hours (2-3 days in office) High autonomy Unusual socially conscious projects with genuine humanitarian purpose Little bureaucracy Significant ownership

🏢 Summary: Mid-Level Developer role focused on building and evolving solutions in the media/marketing industry using Java and Python, with strong emphasis on distributed systems and practical AI tool usage. The position involves working across backend, frontend, integrations, and automation in a fully remote setup. The offer includes real impact on architecture and access to modern development tools. 🗂️ Requirements: Strong knowledge of Java, Strong knowledge of Python, Understanding of distributed systems mechanisms and protocols, Ability to independently solve technical problems, Willingness to work across frontend, backend, integrations and automation, Regular practical use of AI tools in development workflow 📃 Skills: Java, Python, DistributedSystems, AI, Claude, ChatGPT, Copilot, Spring, FastAPI, Flask, Linux, Docker, Git 🏢 Description: In Cyclad we work with top international IT companies in order to boost their potential in delivering outstanding, cutting-edge technologies that shape the world of the future. We are looking for a Mid-Level Developer who enjoys solving problems, thinking algorithmically, and isn’t confined to a single tech stack. Someone who understands technology intuitively and is genuinely curious about new tools — from Java and Python to AI assistants such as Claude (Anthropic) and knows how to use them effectively in practice. Project information: Industry: Media/Ad/Marketing Location: Warsaw Work Setup: 100% Remote work Employment type: Contract of employment / B2B Rate: 12 000 PLN/net/month + VAT on B2B Start date: depending on candidate availability Requirements: Strong working knowledge of Java and Python (we treat them as a foundation, not a limitation) Understanding of mechanisms and protocols used in distributed systems Ability to independently solve problems and seek the simplest effective solutions Openness to working across technologies (frontend, backend, integrations, automation) Regular use of AI tools (Claude, ChatGPT, Copilot, etc.) as a natural part of the development workflow Nice to Have: Experience with web frameworks (Spring, FastAPI, Flask) Familiarity with Linux, Docker, and version control systems (Git) Interest in automation and hands-on experimentation with AI in real projects We offer: Competitive salary + flexible cooperation model (UoP / B2B) Influence on architecture, processes, and technology in a key business area Work with large data volumes and projects with real business impact Access to modern tools, development budget, and the possibility to work with innovative solutions Flexible remote or hybrid work Collaboration with experienced marketing, tech, and analytics specialists.

🏢 Summary: Mid-Level Developer role focused on building and integrating solutions in a media/marketing project, with strong emphasis on Java and Python and practical use of AI tools in daily development. The position involves working across backend, frontend, and distributed systems in a fully remote setup. The offer includes influence on architecture and collaboration on data-driven projects with real business impact. 🗂️ Requirements: Strong knowledge of Java, Strong knowledge of Python, Understanding of distributed systems mechanisms and protocols, Ability to solve problems independently, Ability to work across frontend, backend, and integrations, Regular practical use of AI development tools 📃 Skills: Java, Python, AI, Claude, ChatGPT, Copilot, DistributedSystems, Spring, FastAPI, Flask, Linux, Docker, Git 🏢 Description: In Cyclad we work with top international IT companies in order to boost their potential in delivering outstanding, cutting-edge technologies that shape the world of the future. We are looking for a Mid-Level Developer who enjoys solving problems, thinking algorithmically, and isn’t confined to a single tech stack. Someone who understands technology intuitively and is genuinely curious about new tools — from Java and Python to AI assistants such as Claude (Anthropic) and knows how to use them effectively in practice. Project information: Industry: Media/Ad/Marketing Location: Warsaw Work Setup: 100% Remote work Employment type: Contract of employment / B2B Rate: 12 000 PLN/net/month + VAT on B2B Start date: depending on candidate availability Requirements: Strong working knowledge of Java and Python (we treat them as a foundation, not a limitation) Understanding of mechanisms and protocols used in distributed systems Ability to independently solve problems and seek the simplest effective solutions Openness to working across technologies (frontend, backend, integrations, automation) Regular use of AI tools (Claude, ChatGPT, Copilot, etc.) as a natural part of the development workflow Nice to Have: Experience with web frameworks (Spring, FastAPI, Flask) Familiarity with Linux, Docker, and version control systems (Git) Interest in automation and hands-on experimentation with AI in real projects We offer: Competitive salary + flexible cooperation model (UoP / B2B) Influence on architecture, processes, and technology in a key business area Work with large data volumes and projects with real business impact Access to modern tools, development budget, and the possibility to work with innovative solutions Flexible remote or hybrid work Collaboration with experienced marketing, tech, and analytics specialists.

🏢 Summary: Mid QA Engineer role focused on database test analysis and development using Python and SQL, with gradual expansion into web application and E2E/UI automation testing. The position combines automated and manual testing across data-driven systems and web applications, collaborating closely with engineering and product teams. It suits a technically strong QA professional experienced in data validation and automation within modern web and cloud environments. 🗂️ Requirements: 2+ years of QA experience (manual and/or automated testing), Experience with test automation, Understanding of testing concepts, test design and defect reporting, Basic to intermediate Python skills, Practical SQL knowledge and experience with relational databases, Ability to analyse data and investigate inconsistencies, Experience with UI and/or web application testing, Strong analytical and logical thinking skills, Strong communication and collaboration skills, English proficiency at B2 level or higher 📃 Skills: Python, SQL, PostgreSQL, BigQuery, Playwright, TypeScript, JavaScript, React, Node.js, Express, Docker, Kubernetes, GCP, Jira, GitHub, GitLab, CI/CD 🏢 Description: Salary ranges: 13,000-16,000 PLN on B2B Purpose of Role We are looking for a Mid QA Engineer to join our QA team and support quality across data-driven and web applications. In this role, you will initially focus on database test analysis and development, working with tests written in Python and validating data using SQL. Over time, the role will also expand into web application testing, including Playwright/TypeScript automation and manual feature testing. This is a good fit for someone who enjoys technical QA work, understands testing fundamentals, is comfortable working with data, and can use AI tools effectively in day-to-day engineering tasks. What you will be doing Analysing, maintaining and extending automated database tests written in Python Verifying data correctness using SQL and investigating data-related issues Supporting test coverage for data processing and database-related logic Creating and maintaining automated tests, initially focused on DB tests and later also E2E/UI tests Performing manual feature, regression and UI testing for web applications Supporting cross-browser and cross-application testing Reporting, tracking and verifying bugs in Jira Supporting releases, documentation and QA feedback loops Collaborating closely with developers, QA engineers, product and data-focused teams Using AI tools to support test analysis, test creation, debugging and day-to-day QA work We are looking for: 2+ years of experience in QA, including manual and/or automated testing Experience with test automation Good understanding of testing concepts, test design and defect reporting Basic to intermediate Python skills, or willingness to work with Python-based test automation Practical SQL knowledge and experience working with relational databases Ability to analyse data, investigate inconsistencies and reason about expected results Strong logical and analytical thinking skills Experience with UI and/or web application testing Strong communication and collaboration skills English at B2 level or higher It would be nice to have Experience with Playwright and TypeScript Experience with CI/CD and GitHub/GitLab pipelines Experience with database testing or data quality testing Experience working with cross-functional engineering teams Experience testing AI-powered features or using AI tools in QA workflows Basic understanding of cloud-based or containerised environments Tech stack You do not need to know all of these technologies from day one, but these are the tools and technologies you may work with: Python SQL PostgreSQL, BigQuery Playwright, TypeScript JavaScript React, Node.js, Express Docker, Kubernetes, GCP About Us Opensignal is the leading global provider of independent insight and data into network experience and market performance. Our user-centric approach allows communication providers to constantly improve their network and maximise commercial performance. Leading analysts, investors and financial institutions place a high value on our independent analysis, and we are regular contributors to their reports. Real network experience is our focus, and ultimately that is what influences customer choice. Our mission is to advance connectivity for all. Here at Opensignal, the team is leading the industry in enabling operators to link their network experience and market performance in a way that has never before been possible. With offices in Warsaw, London, Boston and Victoria, British Columbia, we are truly global, with employees working across four continents and representing over 25 nationalities. We are an equal opportunity employer dedicated to building an inclusive and diverse workforce. Benefits We believe we are stronger when we not only celebrate our many differences, values and voices, but include them in everyday practice. Having a diverse and inclusive culture is essential, which is why we offer a flexible approach to work-life balance, operating in a remote-hybrid way. We also offer an attractive range of additional benefits, including: 95% remote work - the team meets in the Warsaw office once a month Warsaw office in the Wola area Kitchen and free coffee Comprehensive private family healthcare package Multisport Plus Card Half-day Fridays

🏢 Summary: Mid/Senior QA Engineer role focused on ensuring quality, reliability, and performance of cloud-based Health Data Platform solutions. The position involves building and maintaining automated tests, contributing to test strategy, and integrating QA processes into CI/CD pipelines. You will collaborate with cross-functional teams to support continuous delivery of high-quality web applications (API and UI). 🗂️ Requirements: 4+ years of QA Engineering or Test Automation experience, Hands-on experience with test automation tools (e.g., Playwright), Programming skills in Python, JavaScript or TypeScript, Experience with API testing, Experience with UI testing, Experience with BDD frameworks (e.g., Cucumber), Understanding of CI/CD processes, Knowledge of version control systems, Basic SQL knowledge, Experience with manual and exploratory testing 📃 Skills: Python, JavaScript, TypeScript, Playwright, Cucumber, SQL, Git, GitHub, Azure, DevOps, CI/CD, Shell, Bash, API, UI 🏢 Description: At Jacobs’ Krakow office, we build more than software – we create digital solutions that power complex, real‑world engineering and infrastructure projects across the globe. As part of our growing Digital & Data Hub, you’ll join high‑impact international teams where quality, innovation and collaboration are at the heart of everything we do. We are looking for a Mid/Senior QA Engineer to join our team and help ensure the reliability, performance and quality of our products. You will work closely with developers, product owners and cross‑functional teams to design and execute test strategies, build automation, and support continuous delivery of high‑quality software. The project focuses on developing cloud‑based solutions for Health Data Platforms, enabling secure processing and delivery of clinical data for healthcare, regulatory and research stakeholders. Responsibilities: Develop and maintain automated tests for web applications (API and UI) Build and extend test automation frameworks using Python, JavaScript or TypeScript Create and execute BDD scenarios (e.g., Cucumber ) Perform functional, regression, exploratory and manual testing Contribute to test planning, test design and overall QA lifecycle Integrate automated tests into CI/CD pipelines ( GitHub Actions, Azure DevOp s) Use SQL to validate data in test environments Automate workflows using Shell/Bash scripting Collaborate with developers and product teams to identify and resolve defects Advocate for QA best practices and continuous improvement Here's what you'll need: 4+ years of experience in QA Engineering or Test Automation Hands‑on experience with test automation ( Playwright or similar ) Good programming skills in Python, JavaScript or TypeScript Experience with API and UI testing Familiarity with BDD frameworks (e.g., Cucumber ) Understanding of CI/CD processes and version control Basic SQL knowledge Experience with manual testing and exploratory testing Strong communication and collaboration skills We offer: Rewarding employment - full-time employment with a salary that matches your qualifications Hybrid work model - enjoy the flexibility of working mostly from home Flexible hours - start your day anytime between 7:30 and 10:00 AM Comprehensive benefits, including Lux Med medical care, psychological support, life insurance, My Benefit cafeteria system, Multisport card co-financing, and a car/bike park sharing system Co-financed holidays - enjoy "Wczasy pod Gruszą" for a well-deserved break Global projects - engage in exciting international projects Inclusive networks - join our diverse employee networks like Women's Network, OneWorld, PRISM, Careers Network, Green Team, SpeakUp, Collectively, and more Continuous learning - participate in our Graduate Development Program, Learners’ Community, and self-learning platforms Language courses - enhance your skills with courses in English, German, and Polish We know that if we are inclusive, we’re more connected, and if we are diverse, we’re more creative. We accept people for who they are, regardless of age, disabilities, gender identity, gender expression, marital status, mental health, race, faith or belief, sexual orientation, socioeconomic background, and whether you’re pregnant or on family leave. Find out more about life at Jacobs. As a Disability Confident employer, we will interview all disabled applicants who meet the criteria for a vacancy. If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team recruitmentpoland@jacobs.com

🏢 Summary: Opportunity for Mid and Senior Software Engineers to design and build high-performance, scalable backend systems powering global content delivery. The role focuses on event-driven, distributed architectures, technical leadership, and ownership of reliability and scalability for systems used by millions of users. It combines hands-on development with architectural decision-making in a cloud-native environment. 🗂️ Requirements: 4+ years (Mid) or 6+ years (Senior) experience in building scalable backend systems, Proficiency in Kotlin, Python or similar backend language, Experience with modern backend frameworks such as Spring Boot, Experience with relational databases (PostgreSQL or MySQL), Experience with NoSQL databases (DynamoDB or MongoDB), Hands-on experience with microservices architecture, Experience with event-driven systems, Experience with Kafka or similar streaming platform, Experience in API design (REST, gRPC or GraphQL), Hands-on experience with AWS services, Experience with Docker and Kubernetes, Experience with CI/CD pipelines and DevOps practices, Experience with monitoring and observability tools, Production support and incident management experience in distributed systems 📃 Skills: Kotlin, Python, Java, Go, TypeScript, JavaScript, Spring, REST, gRPC, GraphQL, Kafka, Redis, PostgreSQL, MySQL, DynamoDB, MongoDB, AWS, Docker, Kubernetes, Terraform, GitHub, Jenkins, Datadog, Sentry 🏢 Description: We are hiring on behalf of our client, a global innovator in fitness and wellness technology. Their mission is to empower people to live fit, strong, long, and happy lives by delivering integrated experiences to millions of members anytime, anywhere. We are looking for a Senior and Mid Software Engineers to join the Content Cloud team . In this role, you will design and build high-performance backend systems that power content delivery across a global platform. You will act as a technical leader within the team, driving architectural decisions, mentoring engineers, and ensuring the reliability and scalability of systems used by millions of users. This is a hands-on role with strong ownership and impact on distributed, event-driven systems at scale. Key takeaways: Stack : Kotlin (main codebase) We're open to: Java/Go/TypeScript/JavaScript, Other tools: REST/gRPC/GraphQL, Kafka, Redis, PostgreSQL/MySQL, DynamoDB/MongoDB, AWS, Docker, Kubernetes Salary : Mid : 21 000 PLN - 23 000 PLN gross on the Contract of Employment Senior: 23 000 PLN - 30 000 PLN gross on the Contract of Employment Working model : Hybrid - 3 days/week from the office Location : ul. Grzybowska 60, Warsaw Recruitment process : A call with MOTIFE Recruiter Coding interview Panel interviews with the team (coding, architecture, and cross-collaboration interviews, Hiring Manager meeting) Responsibilities: Backend Architecture & Scalability Design and build high-performance, scalable backend services and APIs supporting global content delivery Architect event-driven systems and microservices handling large-scale traffic and real-time interactions Drive system design decisions with a focus on reliability, performance, and security Technical Leadership Lead technical discussions, architecture reviews, and design decisions across teams Define and promote reusable patterns, components, and engineering standards Mentor engineers through code reviews, pair programming, and technical guidance Performance & Reliability Identify system bottlenecks using monitoring, tracing, and load testing tools Optimize performance through data modeling, caching strategies, and query improvements Engineering Excellence Champion best practices including CI/CD, automated testing, observability, and infrastructure as code Maintain high standards for code quality, scalability, and maintainability Continuously improve development processes and system architecture Cross-Functional Collaboration Partner closely with Product, Design, and QA to deliver impactful features Translate business requirements into scalable technical solutions Act as a domain expert within the team and contribute to platform-wide initiatives Requirements: Technical Expertise 6+ years of experience building high-performance, scalable backend systems as Senior/4+ years of experience as a Mid Engineer Strong proficiency in Kotlin, Python, or similar backend languages Experience with modern backend frameworks (e.g., Spring Boot or Python-based frameworks) Strong experience with both relational (PostgreSQL, MySQL) and NoSQL databases (DynamoDB, MongoDB) Hands-on experience with microservices and event-driven architectures Experience with distributed streaming platforms such as Kafka Solid understanding of API design (REST, gRPC, or GraphQL) Cloud & Infrastructure Hands-on experience with AWS services (e.g., S3, DynamoDB, Lambda, SQS, IAM) Experience with Docker and Kubernetes Familiarity with infrastructure and deployment tooling (e.g., Terraform, GitHub Actions, Jenkins) Experience with caching systems such as Redis or Memcached Engineering Practices Strong understanding of CI/CD, DevOps, and Agile methodologies Experience with observability and monitoring tools (e.g., Datadog, Sentry) Proven experience in production support and incident management in distributed systems What we offer: 100% paid medical care Multisport Creative tax (KUP) Home office allowance MacBook Pro Apply now If this sounds like your next step, we’d love to hear from you! Please apply via our careers page and submit your CV in English.