June 5, 2026

Backendutvecklare Musikhjälpen

Senior • On-site

Stockholm, Sweden

Backendutvecklare till Musikhjälpen

 

Beskrivning:

emagine söker en senior backendutvecklare som under hösten kan vara med och säkerställa att Musikhjälpens app och bakomliggande system är redo för den intensiva livesändningen i december.

Appen är en central del av upplevelsen där användare kan önska låtar, interagera med programmet och följa sändningen direkt i mobilen.

 

Som backendutvecklare kommer du att arbeta relativt självständigt med att kvalitetssäkra appens backend och tillhörande systemmiljö. Du arbetar nära teamet som byggt lösningen och ansvarar för att identifiera förbättringar, genomföra nödvändiga åtgärder och säkerställa att hela plattformen är stabil och driftsäker inför sändningsveckan. Inklusive tester och uppdaterad dokumentation.

 

Det är avgörande att arbetet är färdigställt och noggrant genomgånget inför livesändningen vecka 49.

Info

Start: Mitten av Aug

Språk: Svenska

Längd: 2026-12-31

Ort: Stockholm

 

Skallkrav

·       Mycket god erfarenhet av Python

·       God erfarenhet av TypeScript och Node.js

·       God kunskap inom databaser

·       Erfarenhet av API-design och integrationsutveckling

·       Erfarenhet av DevOps och infrastruktur. Helst både Kubernetes och AWS.

·       Flytande svenska i tal och skrift

·       Senior profil med dokumenterad erfarenhet av att självständigt driva utvecklingsprojekt under minst 1 sammanhållet år.

 

Meriterande

·       Erfarenhet av betallösningar såsom Swish och PayEx/Swedbank Pay

·       Erfarenhet av Django

·       Erfarenhet av säkerhetsarbete och säkra system

·       Kompetens inom IT-arkitektur

·       Erfarenhet av AI-verktyg och AI-relaterad utveckling

Similar jobs you might like

Technology

New offer

emagine Polska

Backend Entwicklung, ab sofort, remote und FFM (m/w/d)

Senior

Hybrid

Frankfurt am Main, HE, Germany

🏢 Summary: Backend development project focused on building and maintaining cloud-native microservices using Java or Kotlin, Spring Boot, REST APIs, and MongoDB/SQL databases. The role includes CI/CD automation, Kubernetes-based deployments, performance optimization, and code reviews in an agile environment. Remote work is possible with one on-site day per week in Frankfurt. 🗂️ Requirements: Mehrjährige Erfahrung in agiler Backend-Entwicklung, Java 19+ oder Kotlin, Spring Boot, REST-API-Entwicklung, JSON, XML, MongoDB, SQL-Datenbanken, Oracle, PostgreSQL, Kubernetes, Docker, Deutschkenntnisse C2 📃 Skills: Java, Kotlin, Spring, SpringBoot, REST, OpenAPI, JSON, XML, MongoDB, SQL, Oracle, PostgreSQL, Kubernetes, Docker, CI/CD, DevOps, Microservices, Azure, Angular, Git, Jira, Confluence 🏢 Description: Wir suchen Unterstützung durch einen Backend Entwickler (m/w/d). Projektbeginn: Ab sofort nach Absprache Projektort: Frankfurt am Main, 1 Tag die Woche vor Ort, sonst Remote Projektdauer: Bis 31.12.2026 mit Option auf Verlängerung Ihre Aufgaben: - Entwicklung moderner Microservice-Backends mit Java 21, Kotlin und Spring Boot 2 - Entwicklung flexibler Schnittstellen über OpenAPI REST-APIs - Nutzung effizienter Datenhaltung mit MongoDB sowie SQL-Datenbanken - Umsetzung, Weiterentwicklung und Wartung von Services und Features - Performance-Optimierung, Fehleranalyse und Fehlerbehebung - Erstellung automatisierter Tests zur Sicherstellung der Stabilität der CI/CD-Pipeline - Konzeption, Dokumentation und Technologie-Auswahl neuer Projekte und Features - Sicherstellung einer Cloud-Native-Architektur mit DevOps, CI/CD, Kubernetes und Microservices - Durchführung von Code-Reviews zur Verbesserung der Code-Qualität und zum Wissensaustausch Ihr Profil: - Mehrjährige Projekterfahrung in der agilen Backend-Entwicklung mit Java oder Kotlin und Spring Boot - Fundierte Kenntnisse in der Entwicklung von Schnittstellen mit JSON, XML und REST - Erfahrung mit NoSQL-Datenbanken wie MongoDB sowie SQL-Datenbanken wie Oracle und PostgreSQL - Kenntnisse in Kubernetes und Docker - Vorteilhaft: Erfahrung mit Jira, Confluence, Azure, Angular, Git und Testautomatisierung - Sehr gute Deutschkenntnisse mindestens auf Niveau C2

Technology

Transition Technologies MS

Senior .NET Developer

Senior

Hybrid

Warsaw, Poland

🏢 Summary: Backend Developer role focused on building and evolving a scalable music streaming backend platform. The position involves designing, implementing, and maintaining high-performance backend services that support content discovery and playback in a distributed, high-load environment. You will work in an agile team to deliver reliable, testable, and maintainable solutions. 🗂️ Requirements: Strong experience with .NET and C#, Knowledge of Object-Oriented Design (OOD), Understanding of SOA and SOLID principles, Experience with SQL databases, Experience with NoSQL databases, Ability to design and consume RESTful APIs, Experience with distributed and high-load systems, Familiarity with CI/CD pipelines, Proficiency with Git version control 📃 Skills: .NET, C#, OOD, SOA, SOLID, SQL, NoSQL, REST, CI/CD, Git, Distributed, High-load 🏢 Description: We are looking for a Backend Developer to join the product development of Music Backend (BE) platform . You will be part of a team responsible for building and evolving a scalable streaming platform, delivering product and business improvements in close collaboration with cross-functional teams. Your responsibilities: Contribute to the development and improvement of the backend music streaming platform Design and implement scalable, testable, and maintainable backend solutions using appropriate architectural patterns Collaborate with Product Owners and cross-functional teams to shape user experience Develop and maintain front-facing backend services enabling content discovery and playback Ensure operational stability through monitoring, upgrading, and maintaining backend systems Write high-quality code with a strong focus on performance, reliability, and customer value Explore and apply modern technologies within the backend ecosystem Work in an agile development environment We are looking for you, if you have: Strong experience with .NET / C# Solid understanding of Object-Oriented Design (OOD) , SOA , and SOLID principles Experience with SQL and NoSQL databases Experience designing and consuming RESTful APIs Experience with distributed, large-scale, high-load systems Familiarity with CI/CD pipelines Experience using Git for version control Nice to have Experience with application monitoring (preferably Datadog ) Experience working with MongoDB Knowledge of AWS Experience developing in Python Experience with GraphQL We offer: Participation in interesting and demanding projects Flexible working hours A great, non-corporate atmosphere Stable employment conditions (contract of employment or B2B contract) Opportunities for development and promotion Attractive package of benefits Work model: remote or hybrid (2 days per week from the office) We reserve the right to contact the selected candidates.

Technology

emagine Polska

Frontendutvecklare - Kontoteam

Senior

On-site

Stockholm, Sweden

🏢 Summary: Frontend consultant role in a cross-functional team responsible for developing and improving a shared account creation solution used across multiple digital services. The assignment focuses on driving and shaping the frontend architecture while collaborating closely with product, UX, and design. The role is based in Stockholm with a hybrid setup (3 days onsite) from May to December 2026. 🗂️ Requirements: Extensive experience in frontend development, Strong knowledge of JavaScript and TypeScript, Strong experience with React, Experience with Node.js, Strong knowledge of CSS, Experience using AI tools in the development process with focus on quality, security and code review, Fluent Swedish, Ability to work onsite in Stockholm 3 days per week 📃 Skills: JavaScript, TypeScript, React, Node.js, CSS, AI 🏢 Description: Uppdragsbeskrivning: Frontendutvecklare emagine letar efter en frontend-konsult till en av våra mediakunder. Du kommer ingå i team Konto. Konto är ett team där vi arbetar med att utveckla och förbättra ett gemensamt kontoskapande som används i alla våra tjänster, från Play till Mello. Det är ett strategiskt viktigt område för oss, med stor påverkan på användarupplevelsen och vår fortsatta tillväxt. Vi är ett korsfunktionellt team där utvecklarna har ett nära samarbete med produktägare, designers och UX, där idéer och initiativ uppmuntras och tas vidare i teamet. Som frontendutvecklare hos oss får du en central roll i att driva och forma frontend-delen av lösningen, samtidigt som du bidrar till helheten tillsammans med teamet. Period: 2026-05-01 – 2026-12-31 Plats: Stockholm (3 dagar i veckan onsite) Språk: Svenska Kravprofil Kandidaten ska: Vara en erfaren frontendutvecklare med goda kunskaper inom JavaScript/TypeScript, React, Node.js och CSS . Ha erfarenhet av att använda AI-stöd i utvecklingsprocessen, med fokus på kvalitet, tydliga krav, säkerhet och mänsklig granskning. Vara genuint nyfiken och trivas i miljöer där tekniken rör sig fort. Kommunicera öppet och vara bekväm med att dela idéer, fråga när något är oklart och ge feedback till andra. Vara pragmatisk samt gilla att driva projekt framåt och ta ansvar. Ha en bra känsla för design. Meriterande erfarenhet Det är meriterande om kandidaten: Har jobbat med eller har erfarenhet och intresse för tillgänglighetsfrågor . Har erfarenhet av native mobilutveckling (Android och/eller iOS). Har ett intresse för hur AI förändrar produktutveckling i stort. Har erfarenhet av användarflöden kopplade till inloggning, identitet eller säkerhet.

Technology

emagine Polska

Senior frontend utvecklare

Senior

Hybrid

Stockholm, Sweden

🏢 Summary: Senior frontend developer assignment focused on building and evolving a large-scale microfrontend platform and shared UI libraries for a business-critical retail system. The role involves developing framework-agnostic Web Components, improving developer experience, and driving modern frontend architecture decisions. You will work with reusable components and central applications used daily across the organization. 🗂️ Requirements: Several years of frontend development experience, Strong knowledge of JavaScript, Strong knowledge of TypeScript, Strong knowledge of HTML, Experience with Vue or similar frontend framework, Experience with microfrontend architecture, Experience with Web Components, Experience with design systems, Experience with component libraries, Ability to build scalable and reusable frontend solutions 📃 Skills: HTML, JavaScript, TypeScript, Vue, Svelte, WebComponents, Microfrontends, SystemJS, Vite, Rollup, Esbuild, SCSS, CSS, Storybook 🏢 Description: emagine söker en senior frontend utvecklare till vår retail kund i Stockholm. Period: 2026-08-03 - 2026-12-31 Omfattning: 100% Uppdragsbeskrivning Vill du bygga moderna frontend lösningar som används brett i en verksamhetskritisk plattform? Nu söker vi en frontend utvecklare som vill vara med och utveckla nästa generations frontend arkitektur. Om teamet Teamet ansvarar för de gemensamma frontendlösningarna som används av flera team och applikationer inom organisationen. Vi utvecklar och förvaltar vår microfrontendplattform, komponentbibliotek, verktygsbibliotek och byggverktyg – allt med fokus på skalbarhet, återanvändbarhet och utvecklarupplevelse. Vi arbetar i en modern och modulär frontendarkitektur där Web Components är grunden för våra UI-lösningar. Våra komponenter och applikationer ska kunna användas oberoende av ramverk och fungera sömlöst i olika miljöer. Utöver våra gemensamma plattformslösningar ansvarar vi också för flera centrala frontendapplikationer som används dagligen i butik, exempelvis digitala styrtavlor och lösningar för behörighetsstyrning. Teamet har en central roll i organisationen och arbetar nära både andra utvecklingsteam och UX. Rollen passar dig som trivs med att vara en spindel i nätet, gillar många kontaktytor och tycker om att samarbeta för att hitta de bästa lösningarna tillsammans med andra. Vi arbetar dessutom parallellt inom flera olika kontexter och projekt samtidigt. Ena stunden kan du diskutera arkitektur och komponentdesign med frontendteamet, nästa stund stötta ett annat team i implementation eller samarbeta med UX kring användarupplevelse. Därför tror vi att du gillar en vardag där det händer mycket, har lätt för att växla fokus och trivs i en dynamisk miljö med många dialoger igång samtidigt. Hos oss kommer du att Utveckla och vidareutveckla frontendplattformar och gemensamma bibliotek Bygga moderna och återanvändbara UI-komponenter Arbeta med microfrontends och Web Components i stor skala Förbättra utvecklarupplevelsen genom verktyg, builders och templates Samarbeta tätt med andra team och UX för att skapa hållbara och användarvänliga lösningar Stötta utvecklare i användningen av våra gemensamma plattformar och komponenter Delta i tekniska vägval och kontinuerligt utvärdera nya tekniker och arbetssätt Arbeta med både nyutveckling, förbättringar och förvaltning av verksamhetskritiska applikationer Delta i ett rullande schema för support och beredskap Vår tech-stack HTML JavaScript / TypeScript Web Components Vue & Svelte Microfrontend-arkitektur SystemJS Vite, Rollup & Esbuild SCSS & CSS Storybook Varför detta uppdrag? Hos oss får du möjlighet att påverka frontend plattformen som många andra team bygger vidare på. Du blir en del av ett tekniskt kunnigt team där arkitektur, kvalitet och utvecklar upplevelse står i fokus. Här finns stora möjligheter att driva förbättringar, testa nya idéer och arbeta med modern frontend utveckling i stor skala – samtidigt som du får en central roll med stort samarbete och många kontaktytor i organisationen. Profil och Meriter Vi söker dig som: Har flera års erfarenhet av frontendutveckling Har goda kunskaper inom JavaScript/TypeScript, HTML samt Vue (eller motsvarande frontendramverk) Har erfarenhet av microfrontend-arkitektur och arbete med Web Components Har arbetat med design systems och komponentbibliotek Har ett starkt fokus på att skapa hållbara och skalbara lösningar Har ett intresse för arkitektur och komponentdriven utveckling Vi tror också att du: Trivs i en central roll med många kontaktytor och ett högt samarbetsinslag Ser värdet i gemensamma diskussioner och bidra till att hitta de bästa lösningarna tillsammans med teamet Har förmåga att hantera flera parallella initiativ och trivs i en dynamisk vardag Är nyfiken på nya tekniker och drivs av att kontinuerligt förbättra arbetssätt och plattformar Extra meriterande: Erfarenhet av tillgänglighetsarbete (WCAG och inkluderande gränssnitt) Erfarenhet av AI-relaterade lösningar eller AI-drivna utvecklingsverktyg Kunskap inom Azure DevOps och infrastruktur

Technology

ALTER GPU CENTER

Junior Backend Developer

Junior

Remote

🏢 Summary: Part-time Backend Developer role for early-career candidates or students, focused on building and maintaining web applications using Python, Django, and microservices architecture. The position involves developing, testing, debugging, and documenting backend solutions, as well as participating in code reviews. It offers hands-on experience in modern backend development within a collaborative team environment. 🗂️ Requirements: Experience with Python, Experience with Django framework, Knowledge of RESTful APIs, Knowledge of microservices architecture, Experience with SQL, Experience with PostgreSQL, Knowledge of data modeling, Knowledge of data warehouse concepts, Knowledge of software testing methodologies, Ability to create unit tests, Understanding of clean code principles, Familiarity with design patterns, Ability to read technical documentation in English, Adherence to software development best practices 📃 Skills: Python, Django, REST, Microservices, SQL, PostgreSQL, APIs, UnitTesting, IntegrationTesting, SystemTesting, DataModeling, DataWarehouse, GitHub, GitLab 🏢 Description: Who we are looking for: We are looking for a Backend Developer, available for at least half-time, to join our team. If you are at the beginning of your professional career or currently studying, this job is for you. Responsibilities: implementing and developing software based on Python, Django, and microservices technologies, designing and developing web applications, running, testing, and debugging implemented software, creating unit tests, documenting the source code you create, conducting code reviews of source code written by other team members. Requirements: experience with Python and the Django framework, knowledge of RESTful APIs, microservices architecture, and best practices in API design, experience with SQL, especially PostgreSQL, data modeling, and data warehouse concepts, English proficiency sufficient to read technical documentation, creative, solution-oriented problem-solving skills, knowledge of software testing methodologies, including unit, integration, and system testing, openness toward others and the ability to work in a team, willingness to learn new technologies, adherence to software development best practices, knowledge and application of clean code principles, and familiarity with design patterns. Nice to have: knowledge of industry trends, emerging technologies, and best practices in software development, personal projects in your portfolio, familiarity with code repository management platforms such as GitHub or GitLab, documented ability to lead and comprehensively manage complex projects, from initial planning and scope definition through successful implementation and delivery, ensuring timely execution and alignment with business goals. We offer: sports card co-funding, company events, opportunities to learn and gain experience, prospects of working on interesting and diverse projects, participation in industry events, the possibility to work 100% remotely.

Technology

emagine Polska

.NET Backend Developer with SQL Server

Mid

Remote

155 - 160 PLN/hr

🏢 Summary: Full-remote B2B contract for a Backend Developer responsible for building, modernizing, and optimizing API backends using .NET and SQL Server. The role focuses on upgrading legacy systems, including a major SQL Server upgrade, and ensuring high performance and scalability of backend and database layers. The position requires independent ownership of backend, automation, and database-related tasks. 🗂️ Requirements: Strong experience with .NET and C# in backend/API development, Strong hands-on experience with Microsoft SQL Server, Experience with performance tuning, Experience writing complex SQL queries, Experience creating and maintaining stored procedures, Experience in database optimization, Experience modernizing legacy systems, Strong automation experience, Ability to independently manage backend and database responsibilities, Minimum 5+ years of professional experience 📃 Skills: .NET, C#, SQL, SQLServer, T-SQL, APIs, PerformanceTuning, StoredProcedures, DatabaseOptimization, Automation, ClassicASP, VBScript 🏢 Description: Emagine is looking for a strong backend developer with experience in .Net and SQL Server to build and upgrade API backends. Basic information: Full Remote Role Long Term B2B Contract Rate: 160 pln/h + VAT Main Responsibilities: Take ownership of API backend development using .NET / C#. Read and understand existing legacy application logic and translate it into modern, well-structured API endpoints. Lead and support the upgrade of SQL Server (from 2007 to 2025) within the project. Design, optimize, and maintain complex SQL queries, stored procedures, and database structures. Ensure high performance and scalability of the backend and database layer. Work independently on backend, automation, and database-related tasks (no dedicated DBA in the team). Contribute to backend architecture decisions and system improvements. Key Requirements: Strong experience with .NET / C# (backend/API development). Strong hands-on experience with Microsoft SQL Server . Proven experience in: Performance tuning Writing complex queries Stored procedures Database optimization Experience working on modernization of legacy systems. Strong background in automation. Ability to work independently and take full ownership of backend and database responsibilities. Minimum experience: Mid-level: 5+ years Senior: 10+ years Nice to Have: Experience with legacy technologies (e.g., Classic ASP / VBScript). Experience with large-scale database upgrades or migrations.

Technology

Awareson Sp. z o.o.

Senior Backend Developer with Python

Senior

Remote

Warsaw, Poland

170 - 210 PLN

🏢 Summary: Senior Backend Engineer role focused on designing and scaling a high-throughput, event-driven platform. The position centers on building and optimizing large-scale event processing services and APIs in distributed systems. It involves solving complex scalability and reliability challenges in a massive-scale environment. 🗂️ Requirements: Senior-level experience in backend development, Strong Python expertise, Experience scaling message queue systems, Experience with distributed systems and microservices architecture, Proven track record building high-throughput backend services, Experience designing scalable and fault-tolerant systems, Ability to implement and optimize APIs 📃 Skills: Python, Azure, ServiceBus, StorageQueues, EventHubs, Microservices, DistributedSystems, APIs, EventDriven, EventSourcing, Streaming, Observability, Monitoring 🏢 Description: Location: Remote Type: Full-time Level: Senior Duration: 4 months Start: ASAP We are looking for an experienced Senior Backend Engineer to join a team responsible for building and scaling a high-throughput, event-driven platform operating at massive scale. Your primary focus will be the event processing backbone — designing, developing, and optimizing services that handle large volumes of messages reliably and efficiently. You will work closely with architects and other senior engineers to implement APIs that expose data and support advanced triage and processing workflows. This role is ideal for someone who enjoys solving hard scalability problems , working with distributed systems, and building resilient backend services that operate under real-world load. Responsibilities Design and build backend services responsible for large-scale event processing Optimize and scale message-based systems to handle high throughput and reliability requirements Implement APIs defined by system architects to expose data and collect processing results Collaborate with cross-functional teams to improve platform performance and resilience Contribute to architectural decisions around scalability, fault tolerance, and observability Core Skills Strong experience with Python as a primary backend language Deep expertise in scaling message queue systems (e.g. Azure Service Bus, Storage Queues, Event Hubs or similar) Solid understanding of microservices architecture and distributed systems Proven experience building high-throughput, resilient backend services Strong problem-solving skills and ability to work with complex systems Highly Desirable Experience with event-driven or event sourcing architectures Background in data processing frameworks or streaming systems Experience building platforms related to observability, monitoring, or large-scale event management Familiarity with designing systems for fault tolerance and graceful degradation What we offer Work on technically challenging systems operating at very large scale High level of autonomy and real influence on system architecture Collaboration with experienced engineers in a mature engineering environment Competitive compensation and flexible working model Project with strong technical ownership

Technology

emagine Polska

3 Backend developers

Senior

On-site

Stockholm, Sweden

🏢 Summary: Senior Backend Developer role within a business-critical banking initiative, focused on building and modernizing backend services and batch/ETL solutions in a highly regulated environment. The position involves developing scalable Java/Spring-based applications, integrations, and data processing flows in a SAFe agile setup. It requires on-site work in Stockholm with potential extension beyond the initial contract period. 🗂️ Requirements: 8–10+ years of professional backend development experience, Strong hands-on experience with Java and Spring Boot, Experience with JPA and service-oriented architecture, Strong experience with Kafka and REST APIs, Experience with Microsoft SQL Server (MSSQL), Experience working in Linux environments, Experience with CI/CD tools (Bitbucket, Jenkins, Artifactory), Knowledge of Kubernetes, Experience with authentication/security frameworks (JWT), Strong experience with Spring Batch (mandatory for batch-focused role), Experience with Apache Camel and stored procedures, Experience with integrations across APIs, messaging platforms, and legacy systems 📃 Skills: Java, Spring, SpringBoot, SpringBatch, JPA, Kafka, REST, MSSQL, SQL, Linux, Kubernetes, Bitbucket, Jenkins, Artifactory, JWT, ApacheCamel, Vert.x, Lucene, Memcache, Caffeine, .NET, Splunk, AppDynamics, Sysdig, Grafana 🏢 Description: emagine are looking for three Senior Backend Developers to join a business-critical development initiative in a complex and highly regulated environment for our client within the banking industry. Start: 2026-06-08 End: 2026-11-30 (extension could be possible) Location: Stockholm, min 3 days/week at the office We are seeking experienced and proactive developers with 8–10+ years of professional experience , who can quickly become productive after onboarding and work both independently and collaboratively within a SAFe-based agile setup . Two of the consultant roles will have a strong focus on backend development with Java, Spring Boot, and databases , while the third role will focus more heavily on batch processing and ETL flows , where Spring Batch is a key requirement. Key Responsibilities Design, develop, and maintain backend applications and integrations Build and optimize scalable services using Java and Spring Boot Develop and maintain batch and ETL processes Work with integrations across APIs, messaging platforms, and legacy systems Support modernization initiatives and migration towards new technical platforms Collaborate with cross-functional teams in a SAFe environment Ensure high standards within security, performance, and maintainability Required Competence Backend Development Strong hands-on experience in Java and Spring Boot Experience with JPA and service-oriented architecture Experience with Kafka and REST APIs Knowledge of Vert.x, Lucene, Memcache, Caffeine , or .NET is considered an advantage ETL / Batch Processing Strong experience with Spring Batch (mandatory for one of the roles) Experience with Apache Camel and stored procedures Databases Solid experience with Microsoft SQL Server (MSSQL) Platform & Runtime Experience working in Linux environments Knowledge of Kubernetes and platform modernization initiatives CI/CD & DevOps Experience with Bitbucket, Jenkins, and Artifactory Security & Monitoring Experience with authentication/security frameworks such as JWT Familiarity with audit logging and monitoring tools such as Splunk, AppDynamics, Sysdig, and Grafana Integrations Strong experience with Kafka and REST-based integrations Experience working with mainframe integrations , file-based integrations, and legacy adapters is highly valued Consultant Profile We are looking for outgoing, senior consultants who are comfortable taking ownership and working with minimal supervision after the initial introduction period. The ideal candidate is technically strong, communicative, and thrives in both independent work and collaborative agile team environments.

Technology

Fundacja Szkoła w Chmurze

Senior Backend Python Developer

Senior

Remote

Warsaw, Poland

17,000 - 22,000 PLN

🏢 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)

Technology

emagine Polska

Lead Backend Developer

Senior

On-site

Helsinki, Finland

🏢 Summary: Senior Lead Backend Developer role in the banking industry focused on Financial Crime Prevention, leading backend development initiatives and driving technical excellence in scalable distributed systems. The position involves hands-on Java development, architectural design, mentoring developers, and collaboration with cross-functional teams in a hybrid Helsinki-based setup. Experience with cloud technologies, microservices, and modern CI/CD practices is required. 🗂️ Requirements: 7+ years of Java development, Experience with Spring Boot, Experience with Kafka, SQL expertise, Experience with distributed systems, Knowledge of Domain-Driven Design, Experience with Event Sourcing, Experience with Microservices architecture, Knowledge of Clean Code principles, Experience with AWS, Knowledge of CI/CD, Experience with Jenkins, Experience with Docker, Experience with Kubernetes, Knowledge of REST, Experience with Maven, Experience using AI tools and LLMs, Fluent English, Fluent Finnish 📃 Skills: Java, Spring, Kafka, SQL, DDD, AWS, Jenkins, Docker, Kubernetes, REST, Maven, Microservices, LLM, Hadoop, HBase, Angular, JavaScript, JUnit, TDD 🏢 Description: emagine is looking for a Senior Lead Backend Developer for one of our clients within the banking industry. This roles is based in Finland. Start: 2026-04-17 End: 2026-06-30 (extension possible) Location: Helsinki, 3 days/week at the office is required What you’ll be doing: - Acting as a Lead/Expert Developer within the Financial Crime Prevention domain, driving technical excellence and innovation. - Leading technical teams by setting high development standards, implementing industry best practices, and mentoring other developers. - Collaborating closely with Product Owners, Solution Architects, and Analysts - Refining epics and user stories, ensuring clear alignment between business goals and technical execution. - Translating solution architecture into robust technical designs and high-quality, working software. - Advising on the selection of tools, technologies, and processes to optimize development within the Fraud area. Your profile and experience: - Strong leadership & communication: Proven ability to facilitate technical meetings, lead and coach developers, and communicate effectively across diverse stakeholder groups. - An Senior/Expert mindset: Expert-level experience in building scalable, high-concurrency, and distributed systems with a focus on high availability and throughput. - Core Tech Stack: At least 7 years of professional Java development, including deep hands-on experience with Spring Boot, Kafka, and SQL. - Architecture & Patterns: Practical expertise in Domain-Driven Design (DDD), Event Sourcing, Microservices architecture, and Clean Code principles. - Cloud & Modern Tooling: Hands-on experience with Cloud platforms (especially AWS) and a solid understanding of CI/CD (Jenkins, Docker, Kubernetes), REST, and Maven. Practical knowledge of using AI tools and LLMs to enhance development workflows or integrate intelligent features into products. Fluent in English and Finnish (both written and spoken) Nice to have: Knowledge of Software Security, TDD, and JUnit. Experience with HBase on Hadoop, Angular, or JavaScript.