Senior Backend Engineer

🏢 Summary: Senior Django Developer role focused on developing and scaling a marketing automation platform, with responsibility for building high-performance web applications, modernizing legacy code, and solving complex system problems. 🗂️ Requirements: Minimum 4 years of experience with Django, Strong experience with Python, Good knowledge of Celery, Experience building and maintaining complex web applications, Ability to optimize code for performance, Experience working with modern libraries and frameworks, English C1, Polish C1 📃 Skills: Python, Django, Celery, REST, SQL, Git 🏢 Description: Positive User is not just a tool, it’s a modern platform that allows brands to create personalized customer experiences powered by complex data. In one place we combine CRM, data management, and omnichannel communication. Our solutions are trusted by global giants like Carrefour, BNP Paribas, and LG, along with over 340 ambitious companies worldwide. As part of Positive (a European B2B SaaS leader with a presence in France, Poland, Germany, Italy, and Spain) we belong to a growing ecosystem of innovative products united by a common mission: to create marketing solutions that bring companies closer to their customers. Our approach? Innovate, Simplify, Satisfy! Want to see what it takes to be part of the team making it happen? We plan big and that’s why we’re always open for A-players to join our team! As of no we are looking for a Senior Backend Developer , a person who will work directly on our product development. This is an ideal role for someone fascinated by modern web technologies and with extensive experience with Python and the Django framework. 💻 Your main tasks will be: building and developing scalable applications with a strong focus on high performance and code quality, modernizing legacy code to improve its readability, stability, and overall efficiency, working with the latest versions of libraries, frameworks and tools, ensuring they stay up to date, writing clean, high-quality code in line with industry best practices, deepening technical knowledge and solving complex system and application-level issues, collaborating with a team of tech enthusiasts , where a growth mindset and continuous improvement of programming skills are our top priorities. 😎 What skills and experience are we looking for? at least 4 years of experience with the Django framework, strong knowledge of Celery , proficiency in Python (ability to write clean and efficient code), experience in building and scaling complex web applications , drive to go beyond standard CRUDs - a passion for diving deep into details and optimizing code, fluency in both English and Polish (C1 level) , independence and a high sense of ownership over assigned tasks, ability to work both as a team player and independently, a solution-oriented mindset and openness to change. 🥳 What we offer in return: compensation between 17 000 - 23 000 PLN / monthly, 100% remote, flexible hours and international environment, co-finance of private medical care and sports card, high-quality hardware - you’ll work on Macbook, individual approach to your development with access to courses and needed sources.

🏢 Summary: Senior Backend Developer (Python/Django) role in a SaaS platform for e-commerce analytics and process automation, focused on building scalable backend solutions that process large datasets and power pricing, ranking, and decision-support mechanisms. The position involves designing data-processing algorithms, integrating external APIs, and developing business logic in a fully remote, small product team. The offer provides high autonomy and real impact on product direction in a globally expanding platform. 🗂️ Requirements: Minimum 5+ years of commercial experience in Python, Very good knowledge of Django framework, Experience in designing algorithms and data processing solutions, Experience in implementing complex business logic, Experience with PostgreSQL, Experience with Elasticsearch, Experience with Redis, Ability to analyze large datasets, Experience with API integrations, Ability to work independently on complex technical problems 📃 Skills: Python, Django, PostgreSQL, Elasticsearch, Redis, API, Algorithms, DataProcessing, SQL, Git 🏢 Description: Jesteśmy agencją consultingową, zajmującą się wyszukiwaniem i pozyskiwaniem najlepszych talentów ✨ dla naszych klientów . Pomagamy start-upom, software house’om i przedsiębiorstwom w skalowaniu i transformacji poprzez nawiązywanie współpracy z ambitnymi inżynierami posiadającymi prawdziwą pasję do technologii. Obecnie poszukujemy Senior Backend Developera (Python\ Django) do polskiej firmy rozwijającej  międzynarodową platformę typu SaaS związaną z zarządzaniem, analityką i automatyzacją procesów dla e-commerce. Platforma jest narzędziem pobierającym informacje z dużych sklepów online, jak również z rynku ( m.in Google Shopping), i dostarcza dzięki temu analitykę oraz automatykę w zakresie polityk cenowych, zwiększania sprzedaży w określonych kategoriach, rynkach itd. Platforma jest łatwa w obsłudze dla użytkownika, ale pod spodem przetwarza duże zbiory danych i na ich bazie dostarcza szybko i inteligentnie wartościowe dane dla właścicieli sklepów. W obecnej fazie platforma wyprzedza już funkcjonalnie konkurencyjne rozwiązania a plany obejmują globalną ekspansję, głównie na rynki zagraniczne. Poszukujemy doświadczonego specjalisty, który zechce współtworzyć ten ekosystem produktowy i aplikację SaaS, ceni sobie posiadanie dużej autonomiczności 💪, wpływu na kierunek i sposób rozwoju firmy, pracę w małym, w pełni zdalnym i w 100% polskim zespole oraz szuka firmy nastawionej na wprowadzanie innowacyjności, w której panuje luźna atmosfera młodego zespołu . Szukamy osoby która pomoże w rozwoju modułów, integracji i sprawnym dostarczaniu biznesowych funkcjonalności. 🔷 Co będzie należało do Twoich głównych zadań? Rozwój backendu aplikacji w Pythonie i Django Projektowanie i implementacja algorytmów przetwarzania danych wykorzystywanych przez poszczególne moduły porównywarek. Rozwój oraz optymalizacja mechanizmów scoringowych, rankingowych i klasyfikacyjnych dla produktów dostępnych na platformie. Modelowanie logiki biznesowej oraz przekładanie złożonych wymagań biznesowych na wydajne rozwiązania techniczne. Analiza dużych zbiorów danych oraz budowanie mechanizmów wspierających automatyzację procesów decyzyjnych w systemie. Integracja systemu z zewnętrznymi platformami i usługami poprzez API Projektowanie i zarządzanie danymi w PostgreSQL, Elasticsearch oraz Redis. Tworzenie testów automatycznych oraz dbanie o jakość i stabilność dostarczanego oprogramowania. Współpraca bezpośrednio z CEO/CTO oraz zespołem produktowym przy realizacji nowych funkcjonalności. 🎯 Jakie skille, doświadczenie i mindset są przez nas poszukiwane? Minimum 5+ lat komercyjnego doświadczenia w programowaniu w Pythonie. Bardzo dobra znajomość frameworku Django. Silne umiejętności analityczne oraz matematyczne podejście do rozwiązywania problemów. Doświadczenie w projektowaniu algorytmów, przetwarzaniu danych oraz implementacji złożonej logiki biznesowej. Umiejętność modelowania procesów i zależności biznesowych w kodzie. Doświadczenie w pracy z PostgreSQL, Elasticsearch oraz Redis. Umiejętność samodzielnego rozwiązywania złożonych problemów technicznych. Chęć pracy w niewielkim, produktowym zespole oraz gotowość do głębokiego zrozumienia domeny biznesowej. Dobra organizacja pracy własnej i doświadczenie w pracy zdalnej. Nice to have Znajomość React i Next.js umożliwiająca pracę z warstwą frontendową. Mile widziane doświadczenie przy platformach e-commerce, porównywarkach, marketplace'ach, systemach rekomendacyjnych lub produktach opartych o scoring i analizę danych. ⭐ Co możemy Ci zaoferować ? W 100% pracę zdalną, z elastycznym podejściem Pracę z niewielkim, zgranym i doświadczonym zespołem Pracę w luźnym i dynamicznym start-upowym środowisku dofinansowanie do Multisport Nie czekaj! Aplikuj już teraz :)

🏢 Summary: Senior Backend Developer role focused on designing, developing and scaling a modern web platform using Python and Django. The position involves architectural decisions, performance optimization, async processing and integrations with external systems. Strong ownership of code quality and technical direction is expected. 🗂️ Requirements: Minimum 5 years of backend development experience, Strong knowledge of Python, Commercial experience with Django, Experience with Django REST Framework, Practical experience with PostgreSQL, Experience with Docker and Docker Compose, Knowledge of asynchronous processing (Celery, Redis, queues), Ability to design and document REST APIs, Experience with system architecture and scalability, Experience with external API integrations 📃 Skills: Python, Django, DRF, PostgreSQL, Docker, Redis, Celery, REST, API, Angular, CQRS, DDD 🏢 Description: Szukamy doświadczonego Senior Backend Developera , który pomoże nam rozwijać i skalować nowoczesną platformę webową. Jeśli Backend to Twoje naturalne środowisko, a architektura, jakość kodu i odpowiedzialność techniczna są dla Ciebie ważniejsze niż „feature factory” – zapraszamy. Zakres obowiązków: Projektowanie i rozwój Backendu w Pythonie ( Django / Django REST Framework ) Współtworzenie architektury systemu (monolit + integracje, async, background tasks) Optymalizacja wydajności i skalowalności aplikacji Integracje z systemami zewnętrznymi (API, webhooki, płatności, usługi third-party) Dbanie o jakość kodu: code review, testy, dobre praktyki Współpraca z frontendem (Angular) i zespołem produktowym Realny wpływ na decyzje technologiczne Wymagania: Minimum 5 lat doświadczenia w Backendzie Bardzo dobra znajomość Pythona i Django Doświadczenie z Django REST Framework Praktyczna znajomość baz danych PostgreSQL Doświadczenie z Docker / Docker Compose Znajomość zagadnień async (Celery, Redis, kolejki) Umiejętność projektowania API i pracy z dokumentacją Samodzielność, odpowiedzialność i techniczne myślenie Mile widziane: Doświadczenie w projektowaniu większych systemów (DDD, CQRS, wzorce projektowe) Praca z systemami legacy i ich stopniową refaktoryzacją Doświadczenie w edukacji online / platformach SaaS Znajomość Angulara (na poziomie współpracy z FE) Oferujemy: Realny wpływ na produkt i architekturę Pracę przy sensownym, długoterminowym projekcie Dużą autonomię techniczną Elastyczne godziny pracy i pracę zdalną Współpracę B2B lub UoP Wynagrodzenie adekwatne do doświadczenia Jeśli lubisz backend, który ma znaczenie , a nie tylko „kolejne endpointy” - odezwij się. Etapy rekrutacji: 1. Zaproszenie na video screening 2. Zadanie rekrutacyjne sprawdzające znajomość DRF 3. Rozmowa miękko-techniczna -> po ok. 5 dniach od odesłania zadania, po pozytywnej jego ocenie umawiamy spotkanie online (ok. 40-min.) + krótki test kompetencji logicznych (online 40 minut)

🏢 Summary: Backend Developer role in a small technical team building a custom e-commerce platform from scratch, with strong focus on databases, analytics, and system integrations. The position involves developing and maintaining backend services, designing REST APIs, optimizing databases, and integrating external systems such as ERP and payment providers. The role offers real impact on product architecture and technical decisions. 🗂️ Requirements: Minimum 3 years of backend development experience with Python, Strong knowledge of SQL and relational databases, Experience with PostgreSQL, Experience working with large datasets and analytics, Knowledge of CI/CD concepts, Experience with Git, Experience with Docker, Ability to design and implement REST APIs, Experience with system integrations 📃 Skills: Python, SQL, PostgreSQL, REST, CI/CD, Git, Docker, ERP, CRM, GCP, ETL, BI, Odoo 🏢 Description: Jesteśmy małym, technicznym zespołem, który buduje e-commerce po swojemu – od podstaw, bez gotowych platform, z realnym wpływem na kierunek produktu. Pracujemy hybrydowo, spotykamy się w naszym biurze w Krakowie, 1-2 dni tygodniowo. Tym razem szukamy osoby, która wesprze nasz backend – ze szczególnym naciskiem na bazy danych, analitykę i integracje systemów. 🧠 Kogo szukamy: Masz min. 3 lata doświadczenia w backendzie z użyciem Pythona Znasz SQL i relacyjne bazy danych (PostgreSQL) Masz doświadczenie w pracy z większymi zbiorami danych i analityką Znasz podstawy CI/CD, Git, Docker Umiesz pracować samodzielnie i komunikować się w zespole 💼 Twoje zadania: Rozwój i utrzymanie backendu platformy e-commerce i systemu ERP Praca z bazami danych – projektowanie, optymalizacja zapytań, analiza danych Projektowanie i implementacja REST API Integracje z systemami zewnętrznymi (ERP, CRM, płatności, marketplace’y) Współtworzenie narzędzi i raportów analitycznych Udział w decyzjach architektonicznych i code review ✅ Mile widziane (ale nie wymagane): Znajomość narzędzi do ETL, raportowania lub BI (np. Zoho, Metabase, Superset, dbt) Tworzyłeś(aś) REST API i integrowałeś(aś) systemy zewnętrzne (ERP, marketplace’y, płatności) Doświadczenie z Odoo Znajomość Google Cloud Platform (GCP) Umiejętność pracy z dużymi wolumenami danych (performance, agregacje itp.) Zrozumienie działania e-commerce lub logiki magazynowo-sprzedażowej 💚 Co oferujemy: Pracę w technicznym zespole z realnym wpływem na produkt i architekturę Dużą niezależność, bez warstw menedżerskich Budżet szkoleniowy, code review, rozwój przez projekt Wynagrodzenie dopasowane do doświadczenia Płatny urlop – również na B2B Pakiet medyczny i ubezpieczenie Po okresie próbnym zniżkę pracownicza na asortyment obsługiwanych partnerów

🏢 Summary: Senior Backend Python Engineer role focused on building scalable AI-powered enterprise software and owning backend services from architecture to production. The position involves backend development, distributed systems, cloud infrastructure, and technical leadership in a hybrid B2B environment. Candidates will collaborate across teams to deliver secure, high-performance applications using modern engineering and AI-assisted workflows. 🗂️ Requirements: 6+ years building production-grade backend systems, Strong Python experience, Experience with distributed systems, Knowledge of concurrency and asynchronous processing, Experience designing REST APIs, Experience with scalable architectures, Hands-on cloud platform experience, Database design and performance optimization knowledge, Experience building secure enterprise applications, Ability to own projects from design to deployment, Cross-functional collaboration skills, Strong troubleshooting and problem-solving skills, Excellent English communication skills, Experience with AI tooling and automation workflows 📃 Skills: Python, REST, AWS, GCP, Azure, SQL, TypeScript, LLM, AI, Monitoring, Logging, Observability, Automation 🏢 Description: Senior Backend Engineer (Python) 📍 Warsaw, Poland (Hybrid) ☑️ Full-time 🕦 B2B Contract 💰 $8.000 - $12.000/month We are hiring a Senior Backend Python Engineer for an innovative technology company building AI-powered enterprise software used by organizations worldwide. This role is ideal for an experienced backend engineer who enjoys designing scalable production systems, solving complex technical challenges, and taking ownership of critical backend services from architecture through production. You'll work closely with product, frontend, and platform engineers to build reliable, secure, and high-performance applications while leveraging modern AI-assisted engineering practices . As a Senior Backend Python Engineer you will provide backend development, system design, cloud infrastructure, and technical leadership in a fast-paced engineering environment where ownership and continuous improvement are highly valued. Requirements 6+ years of experience building and maintaining production-grade backend systems Strong hands-on experience with Python and modern backend development practices Strong understanding of distributed systems, concurrency, asynchronous processing, and scalable architectures Experience designing and developing REST APIs and backend services Hands-on experience with cloud platforms such as AWS, GCP, or Azure Strong knowledge of database design, performance optimization, and high-throughput applications Experience building secure, reliable enterprise applications with a security-first mindset Ability to own projects from technical design through deployment and production support Experience working closely with cross-functional engineering and product teams Strong troubleshooting, problem-solving, and communication skills Excellent written and verbal English communication skills Improve engineering leverage with AI tooling , automation, and internal workflows rather than using AI as a gimmick Nice to Have Experience building AI-powered applications, agentic systems, LLM integrations, or orchestration frameworks Experience with TypeScript or full-stack development Experience mentoring engineers or contributing to technical leadership Experience with observability, monitoring, logging, and performance optimization Experience working in fast-growing product or startup environments Responsibilities Design, develop, and maintain scalable backend services, APIs, and asynchronous processing systems Translate business requirements into robust technical solutions and scalable system designs Own services throughout their lifecycle, including deployment, monitoring, reliability, and continuous improvement Design efficient data models and optimize database performance for production workloads Collaborate with product, frontend, and platform teams to deliver end-to-end features Improve engineering productivity through automation and AI-assisted development workflows Participate in architecture discussions, code reviews, and technical decision-making Implement monitoring, logging, and observability solutions to ensure production reliability Continuously improve system scalability, performance, security, and maintainability Contribute to engineering best practices and knowledge sharing across the team

🏢 Summary: Senior Backend Engineer role to architect and build the core systems of a next-generation AdTech platform, focusing on high-throughput, low-latency services for campaign delivery, targeting, and attribution. The position involves defining system architecture from the ground up using Python, Django, Kubernetes, and AWS in a distributed, scalable environment. Engineers will drive technical direction, optimize performance, and provide leadership in a fast-paced, product-driven setting. 🗂️ Requirements: 5+ years of software development experience building scalable backend systems, Strong knowledge of algorithms, data structures, networking, and databases, Proven experience designing and scaling distributed systems, Experience with backend programming languages (e.g. Java, .NET, Python, Node.js), Ability to design high-throughput, low-latency systems, Experience with system architecture and technical decision-making, Availability to work until 1pm EST, Upper-intermediate English level 📃 Skills: Python, Django, Kubernetes, AWS, PostgreSQL, Java, .NET, Node.js, ETL, OpenRTB, Prebid.js, GoogleAdManager, AmazonUAM, DSP, SSP 🏢 Description: ID68432 AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. Why join us If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :) About the role We are looking for a Senior Backend Engineer to architect and build the core systems of a next-generation AdTech platform that embeds products directly into visual experiences. You will design high-throughput, low-latency services for campaign delivery, targeting, attribution, and partner integrations using Python, Django, Kubernetes, and AWS. This is an early-stage initiative where senior engineers define the technical direction and system architecture from the ground up. What you will do Architect, build, and evolve core systems for the Ads platform; Design APIs and services supporting campaign management, targeting, delivery, attribution, and reporting; Build and optimize high-throughput, low-latency systems processing large volumes of events and data; Own critical systems end-to-end, including design, implementation, deployment, monitoring, and ongoing improvements; Drive architectural decisions and establish patterns that support scalability, reliability, and developer productivity; Collaborate closely with product, data, and partner teams to translate business requirements into robust technical solutions; Provide technical leadership through design reviews, system discussions, and mentoring other engineers; Contribute to engineering best practices, documentation, and long-term platform vision; Participate in hiring and help grow a strong, high-performing team. Must haves 5 years of software development experience building scalable systems using backend programming languages/frameworks (e.g. Java , .NET , Python , Node.js , etc); Deep understanding of computer science fundamentals, including algorithms, data structures, networking, and databases; Proven experience designing and scaling distributed systems with a focus on performance, observability, and fault tolerance; Strong architectural instincts and the ability to make high-leverage technical decisions that impact multiple teams and systems; Demonstrated ability to influence and mentor senior engineers, guide teams through ambiguity, and elevate engineering practices across the board; Exceptional ownership mindset; Availability to work till 1pm EST (till 8 pm Kyiv time) ; Excellent communication and cross-functional collaboration skills; Comfortable operating in a fast-paced, high-autonomy, product-driven environment; Experience with e-commerce and catalog management is preferred; Familiarity with Python , Django , Kubernetes , PostgreSQL , and AWS is strongly preferred, but deep expertise in analogous systems and a willingness to learn are welcome; Upper-intermediate English level. Nice to haves Strong experience with complex ETL flows and high-throughput systems is highly preferred; Experience with AdTech (This may include experience with DSPs, SSPs, ad exchanges, affiliate programs, Prebid.js, Prebid Server, Google Ad Manager, Amazon UAM/TAM, OpenRTB, identity and addressability solutions, as well as ad operations workflows.) The benefits of joining us Professional growth: Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps Competitive compensation: We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities A selection of exciting projects: Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands Flextime: Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive. Meet Our Recruitment Process Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback: Short online form to confirm basic requirements 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process. 5-minute introduction video Synchronous stage – Live interviews Technical interview with our engineering team (scheduled at your convenience) Final interview with your future teammates If it’s a match — you’ll get an offer!

🏢 Summary: Senior Backend Engineer role focused on architecting and building the core systems of a next-generation AdTech platform, designing high-throughput, low-latency services for campaign delivery, targeting, and attribution. The position involves defining system architecture from scratch, scaling distributed systems, and providing technical leadership in a fast-paced environment. Strong experience with scalable backend development and AdTech ecosystems is required. 🗂️ Requirements: 5+ years of experience building scalable backend systems, Experience in AdTech (DSPs, SSPs, ad exchanges, Prebid, Google Ad Manager, OpenRTB, etc.), Strong knowledge of algorithms, data structures, networking, and databases, Proven experience designing and scaling distributed systems, Experience with backend programming languages (Java, .NET, Python, Node.js), Ability to design high-throughput, low-latency systems, Upper-intermediate English level, Availability to work until 1pm EST, Experience mentoring engineers and driving architectural decisions 📃 Skills: Python, Django, Kubernetes, AWS, PostgreSQL, Java, .NET, Node.js, OpenRTB, Prebid.js, Prebid, GoogleAdManager, AmazonUAM, AmazonTAM, ETL 🏢 Description: ID52365 AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards. Why join us If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! :) About the role We are looking for a Senior Backend Engineer to architect and build the core systems of a next-generation AdTech platform that embeds products directly into visual experiences. You will design high-throughput, low-latency services for campaign delivery, targeting, attribution, and partner integrations using Python, Django, Kubernetes, and AWS. This is an early-stage initiative where senior engineers define the technical direction and system architecture from the ground up. What you will do Architect, build, and evolve core systems for the Ads platform; Design APIs and services supporting campaign management, targeting, delivery, attribution, and reporting; Build and optimize high-throughput, low-latency systems processing large volumes of events and data; Own critical systems end-to-end, including design, implementation, deployment, monitoring, and ongoing improvements; Drive architectural decisions and establish patterns that support scalability, reliability, and developer productivity; Collaborate closely with product, data, and partner teams to translate business requirements into robust technical solutions; Provide technical leadership through design reviews, system discussions, and mentoring other engineers; Contribute to engineering best practices, documentation, and long-term platform vision; Participate in hiring and help grow a strong, high-performing team. Must haves 5 years of software development experience building scalable systems (backend programming languages/frameworks, e.g. Java , .NET , Python , Node.js etc); Experience with AdTech (This may include experience with DSPs, SSPs, ad exchanges, affiliate programs, Prebid.js, Prebid Server, Google Ad Manager, Amazon UAM/TAM, OpenRTB, identity and addressability solutions, as well as ad operations workflows); Deep understanding of computer science fundamentals (algorithms, data structures, networking, databases); Proven experience designing and scaling distributed systems focusing on performance, observability, and fault tolerance; Strong architectural instincts and the ability to make high-leverage technical decisions that impact multiple teams and systems; Demonstrated ability to influence and mentor senior engineers, guide teams through ambiguity, and elevate engineering practices across the board; Exceptional ownership mindset — you drive initiatives forward, raise the bar, and deliver lasting impact; Excellent communication and cross-functional collaboration skills; Availability to work till 1pm EST (till 8 pm Kyiv time) ; Comfortable operating in a fast-paced, high-autonomy, product-driven environment; Experience with e-commerce and catalog management is preferred; Familiarity with Python , Django , Kubernetes , PostgreSQL , and AWS is strongly preferred, but deep expertise in analogous systems and a willingness to learn are welcome; Upper-intermediate English level. Nice to haves Strong experience with complex ETL flows and high-throughput systems is highly preferred. The benefits of joining us Professional growth Accelerate your professional journey with mentorship, TechTalks, and personalized growth roadmaps Competitive compensation We match your ever-growing skills, talent, and contributions with competitive USD-based compensation and budgets for education, fitness, and team activities A selection of exciting projects Join projects with modern solutions development and top-tier clients that include Fortune 500 enterprises and leading product brands Flextime Tailor your schedule for an optimal work-life balance, by having the options of working from home and going to the office – whatever makes you the happiest and most productive. Meet Our Recruitment Process Asynchronous stage – An automated, self-paced track that helps us move faster and give you quicker feedback: Short online form to confirm basic requirements 30–60 minute skills assessment via Codility – a platform founded in Poland that helps us provide quicker feedback and streamline this stage of the process. 5-minute introduction video Synchronous stage – Live interviews Technical interview with our engineering team (scheduled at your convenience) Final interview with your future teammates If it’s a match — you’ll get an offer!

🏢 Summary: Senior Backend Engineer (Python) responsible for designing, building, and maintaining scalable backend services in production environments. The role covers end-to-end ownership from architecture design to production deployment, with strong focus on asynchronous programming and distributed systems. The position is fully remote under a B2B contract. 🗂️ Requirements: Minimum 7 years of experience with Python, Minimum 3 years of experience with Python 3.10+, Experience with asyncio and asynchronous programming, Experience building backend services in production environments, Experience designing and implementing REST APIs, Experience designing scalable distributed systems, Experience with event-driven architecture or queue-based systems, Experience designing fault-tolerant and resilient systems, Experience maintaining production systems, Production experience with NoSQL databases, Experience with data modeling, schema management, and migrations, Experience optimizing database queries and structures, End-to-end ownership from requirements analysis to production deployment, Ability to make technical decisions and manage risks, Very good English communication skills 📃 Skills: Python, Asyncio, REST, NoSQL, MongoDB, Microservices, DistributedSystems, EventDriven, Queues, Kubernetes, CI/CD, OpenTelemetry, Monitoring, SLO, AI, LLM, APIs 🏢 Description: Dla naszego klienta poszukujemy Senior Backend Engineer'a – Python! ZADANIA Senior Python Backend Engineer będzie współpracować z wewnętrznym zespołem developerskim oraz liderami technicznymi. Rola obejmuje pełną odpowiedzialność za budowanie i rozwój rozwiązań oraz wdrażanie ich do środowisk produkcyjnych. WYMAGANIA Min. 7 lat doświadczenia w pracy z Python - co najmniej 3 lata doświadczenia z wersjami 3.10 i nowszymi Asyncio, współbieżność, programowanie asynchroniczne Doświadczenie w budowie usług backendowych działających w środowisku produkcyjnym Projektowanie i implementacja REST API Projektowanie skalowalnych systemów rozproszonych Doświadczenie z architekturą zdarzeniową lub systemami opartymi o kolejki zadań Projektowanie systemów odpornych na błędy i przeciążenia Doświadczenie w utrzymaniu systemów produkcyjnych Doświadczenie produkcyjne z bazami danych (NoSQL, preferowane MongoDB) Modelowanie danych, zarządzanie schemą, migracje Optymalizacja zapytań i struktury bazy Odpowiedzialność end-to-end za dostarczane rozwiązania, od analizy i weryfikacji dostarczonych wymagań, zaprojektowanie architektury, po wdrożenie produkcyjne Umiejętność podejmowania decyzji technicznych, analizy i adresowania ryzyk Dobra/bardzo dobra komunikacja w języku angielskim MILE WIDZIANE Chmura i konteneryzacja Kubernetes i wdrożenia kontenerowe CI/CD i automatyzacja procesów wdrożeniowych Obserwowalność systemów Systemy śledzenia rozproszonego (np. OpenTelemetry) Monitorowanie oparte na metrykach i SLO Integracje AI / LLM Integracja z API modeli językowych Projektowanie pipeline’ów oceny i scoringu Zarządzanie limitami i kosztami zapytań do modeli CO OFERUJEMY NA TYM PROJEKCIE? Współpracę w oparciu o umowę B2B i stawkę: 145-165 zł/h Pracę 100% zdalną Wsparcie dedykowanego opiekuna. Po dołączeniu do speedapp, otrzymasz kontakt do dedykowanego opiekuna, który zadba, aby współpraca z nami oraz z klientem sprawiała Ci satysfakcję Wydarzenia oraz spotkania integracyjne, a także udział w różnych inicjatywach np. sportowych Dostęp do oferty benefitów (opieka medyczna, ubezpieczenie na życie, karta Multisport). JAK WYGLĄDA REKRUTACJA? Zgłoszenie : Zaaplikuj i prześlij swoje CV. Po weryfikacji aplikacji rekruter skontaktuje się telefonicznie z wybranymi kandydatami. Screening : Porozmawiaj z rekruterem speedapp o Twoim doświadczeniu . Kolejne etapy: Rekruter speedapp przedstawi Ci jak wygląda proces rekrutacji na dane stanowisko. Rekruter speedapp pozostanie z Tobą w kontakcie podczas całego procesu. O SPEEDAPP W speedapp wierzymy, że organizacja jest tak dobra jak tworzący ją ludzie. Jesteśmy zespołem ekspertów IT i innych specjalistów pracujących dla naszych klientów na całym świecie (m.in Izrael, Austria, USA). Wykraczamy daleko poza kategorię HR. Budujemy zespoły IT, a także pomagamy w ich zarządzaniu. 👉 10 lat doświadczenia 👉 +100 klientów na całym świecie +300 zatrudnień rocznie 💎 Jesteśmy laureatem prestiżowej nagrody Diamenty Forbes cztery lata z rzędu (2022, 2023, 2024, 2025), członkiem sieci Fast Growth Icons oraz FinTech Poland. MASZ PYTANIA? Skontaktuj się bezpośrednio z rekruterem odpowiedzialnym za ten proces. Karolina Kizowska Senior IT Delivery Consultant karolina.kizowska@speedapp.pl +48 608 487 448

🏢 Summary: The offer is for a Senior Frontend Engineer with UX experience to design and build high-performance, user-centered interfaces for AI-powered image analysis solutions. The role involves shaping frontend architecture, driving UX decisions, and developing a scalable design system in close collaboration with cross-functional teams. It provides flexible employment options, competitive compensation, and the opportunity to work on international, cutting-edge projects. 🗂️ Requirements: Minimum 5 years of professional frontend development experience, Strong expertise in React, Strong expertise in TypeScript, Experience with hooks, state management, and modern frontend patterns, Hands-on experience with UI/UX design tools (e.g. Figma, Sketch), Strong knowledge of CSS including CSS-in-JS or utility frameworks, Experience with automated testing (Playwright, Testing Library, Jest), Knowledge of accessibility standards (WCAG), semantic HTML, ARIA, Experience building or evolving design systems and component libraries, Experience working with REST or GraphQL APIs, Knowledge of frontend performance optimization techniques 📃 Skills: React, TypeScript, JavaScript, HTML, CSS, CSS-in-JS, Playwright, Jest, TestingLibrary, WCAG, ARIA, REST, GraphQL, Figma, Sketch, D3, OpenLayers, Storybook 🏢 Description: Holisticon Connect is a division within NEXER GROUP - a custom software development company. We started in Poland in 2017 and are now a team of over 140 people. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger, in competence rather than in numbers. If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊 We are looking for a Senior Frontend Engineer with UX experience who will take ownership of designing and building intuitive, high-performance user interfaces for advanced, AI-powered image analysis solutions. In this role, you will work closely with cross-functional teams — including software engineers, product owners, and domain experts — to translate complex scientific and product requirements into elegant, user-centered experiences. You will play a key role in shaping the frontend architecture, driving UX decisions , and evolving a scalable design system, ensuring both usability and technical excellence. We offer a choice of employment form: B2B or Employment Contract UoP: 15 000 – 18 000 PLN gross/month B2B: 120 – 150 PLN net/hour + VAT You might be the perfect match if you are/have: Have at least 5 years of professional experience in frontend development; Have strong expertise in React and TypeScript , including hooks, state management, and modern frontend patterns; Have hands-on experience with UI/UX design practices and tools (e.g. Figma, Sketch), including wireframing, prototyping, and user flows; Have excellent knowledge of CSS , including CSS-in-JS or utility frameworks, responsive design, and cross-browser compatibility; Have experience with automated testing (Playwright for E2E, Testing Library/Jest for unit and integration tests); Understand accessibility standards (WCAG) , semantic HTML, and ARIA best practices; Have experience building or evolving a design system and component libraries; Have worked with APIs (REST, GraphQL, or similar), including authentication, caching, and error handling; Understand frontend performance optimization (e.g. code splitting, lazy loading, profiling). Moreover, we appreciate skills in these areas: Experience with data visualization (e.g. D3, OpenLayers or similar); Familiarity with Storybook-driven development ; Basic backend awareness to support effective end-to-end collaboration; Experience with analytics and telemetry (tracking user behavior, product insights). By joining us, you gain the following: Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT; Possibility to develop in cloud technologies; Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen; Respect for your private life so you don't have to work overtime or on weekends; Team Events budget to socialize outside of work; Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in South Africa, Are, and Barcelona). Perks and benefits: Fully remote work or in our office in Wrocław; Benefits such as Luxmed , Multisport , and life insurance in Nationale Nederlanden ; Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior); Personal Training Budget with additional paid hours; Passion Day - an extra day off for your hobby to spend as you please; Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you; We provide high-quality work equipment + 2 additional monitors and accessories. If you apply for this position and match our expectations, then: You will be invited for an HR screening to get to know your experience, expectations, and motivation; You will be invited for a technical interview (~60 minutes) to discuss your approach, problem-solving, and frontend expertise in more depth; Submit your application online in one easy step! Apply now! You will earn: UoP: 15 000 – 18 000 PLN gross/month B2B: 120 – 150 PLN net/hour + VAT

🏢 Summary: Senior Software Engineer role focused on backend development for an established SaaS platform using Scala and Python, with expansion of AI-powered features and integrations. The project involves building scalable backend services, integrating AI/LLM solutions, and supporting production-grade architecture and CI/CD workflows in a remote EU-based B2B engagement. 🗂️ Requirements: 7+ years of professional software development experience, Strong production experience with Scala, Strong proficiency in Python, Experience developing production-grade backend applications, Hands-on experience building and maintaining backend services, Ability to work across Scala and Python codebases, Experience with automated testing, Experience with version control, Experience with code reviews, Experience with CI/CD, Understanding of scalable and maintainable software architecture, Ability to independently solve technical problems, Strong communication skills, Fluency in Polish, Advanced English level (B2/C1) 📃 Skills: Scala, Python, REST, CI/CD, Testing, APIs, SaaS, LLM, ElasticSearch, AWS, Azure, GCP, PHP 🏢 Description: Contract: B2B Rate: 150-160 zł/h net + VAT depending on skills and experience Location: Remote within the EU Duration: 6+ months, with the possibility of long-term cooperation Start: ASAP Project: Backend engineering project focused on developing and maintaining a SaaS platform and expanding its AI-powered capabilities. Key Technologies/Areas Scala Python Backend development REST APIs SaaS platforms CI/CD Automated testing Nice to have: AI and LLM integrations, ElasticSearch, AWS, Azure, or GCP Project Overview You’ll join an existing engineering team as a Senior Software Engineer , contributing to the development and maintenance of backend services for an established SaaS platform. The role combines Scala and Python development . Scala is a core technology used within the existing platform, while a significant part of the day-to-day development will be carried out in Python. You will also support the expansion of AI-powered functionality across the product, including integrations with internal and external AI services, LLM platforms, transcription solutions, and other machine-learning-based capabilities. This is a hands-on role for an experienced backend engineer who can work independently, contribute to architectural and technical decisions, and build reliable, scalable, production-ready solutions. Responsibilities Develop, maintain, and extend backend services using Scala and Python. Design and implement scalable functionality across an existing SaaS platform. Build and expand AI-powered features within the product. Integrate internal and external AI services through APIs, including LLM-based platforms and similar tools. Support the maintenance and further development of existing Scala-based services. Develop new backend functionality primarily in Python. Design reliable and maintainable integrations between platform services and external systems. Write clean, testable, and well-documented production code. Participate in technical discussions, code reviews, and architectural decisions. Ensure the quality, scalability, performance, and security of implemented solutions. Work closely with software engineers, product teams, and other technical stakeholders. Support CI/CD processes and modern software development workflows. Troubleshoot production issues and improve the stability of existing services. Requirements At least 7 years of professional software development experience. Strong production experience with Scala . Strong proficiency in Python and experience developing production-grade backend applications. Hands-on experience building and maintaining backend services. Ability to work effectively across both Scala and Python codebases. Strong understanding of software engineering best practices. Experience with automated testing, version control, code reviews, and CI/CD. Good understanding of scalable and maintainable software architecture. Ability to independently analyze technical problems and propose practical solutions. Strong communication skills and the ability to collaborate within an international engineering team. Fluency in Polish and an advanced level of English (B2/C1) Nice to have Commercial experience working with LLMs or generative AI solutions . Experience integrating AI services or AI models into production systems. Experience building integrations with external AI platforms through APIs. Experience with AI-based transcription, speech-to-text, or related technologies. Experience with ElasticSearch . Experience with public cloud AI services available in AWS, Azure, or GCP. Experience developing or maintaining PHP applications. Previous experience working on SaaS products. Understanding of AI service scalability, monitoring, performance, and cost optimisation. Why join us? Rite NRG is a vibrant outsourcing technology company driven by the Right People. We are dedicated to empowering businesses through innovative software solutions. We focus on building strong partnerships and providing top-notch software solutions that drive real business growth. Our business model revolves around collaboration and delivering impactful results for our clients. Join us and be part of a team where great minds, Right Energy, and strong partnerships come together to shape the future of technology! Stable, long-term, full-time collaboration. Remote work within the EU and flexible working hours. High engineering culture with a focus on growth and learning. Opportunity to work on a mature SaaS platform and production AI solutions. Multinational teams. Benefits: Private medical care, Multisport card, and workation opportunities.