back-end developer ruby

Työpaikkakuvaus Who we are Kassavirtanen Oy is a growing invoicing service company that designs and develops its own systems, websites, and digital services for businesses. We operate from a modern office in the heart of Helsinkis Kamppi district, where teamwork and open communication are at the core of everything we do. We focus on high‑quality code,...

Join MVision AI, ranked #16 in Deloitte Fast 50 Finland, and help us revolutionize cancer treatment. We build cutting-edge, AI-driven cloud platforms that streamline radiotherapy workflows globally.About the roleAs a Backend Developer, you will own cloud services end-to-end to scale our platform for growing global demand. You will collaborate closely with...

Who we areInvosy Oy is a growing invoicing service company that designs and develops its own systems, websites, and digital services for businesses. We operate from a modern office in the heart of Helsinkis Kamppi district, where teamwork and open communication are at the core of everything we do.We focus on high-quality code, long-term development, and...

Kassavirtanen Oy hakee kokeneita Back-End -kehittäjiä rakentamaan skaalautuvia palveluita. Tehtävässä työskentelet osana kehitystiimiä, suunnittelet ja toteutat back-end-palveluita sekä API-rajapintoja sekä omille järjestelmillämme että asiakkaidemme projekteille.Yhteistyö frontend-kehittäjien ja suunnittelijoiden kanssa varmistaa sujuvat...

Invosy Oy is seeking a Back-End Developer to design and implement scalable back-end services and APIs for our own systems and client projects. You will work with front-end developers and designers to deliver robust, efficient solutions.We value clean, maintainable code and familiarity with cloud platforms. The role requires at least two years in back-end...

Is front-end and Javascript development your passions? Join us to change how websites are made. Oidom is in the need of an experienced Frontend Developer capable of building functional code and beautiful things. You'll be working on the Oidom sitebuilder application that is mainly built on React. You will be mainly working with adding new features to the...

Ty"öpaikkakuvaus We are looking for a Junior Front-End Developer to strengthen our development team! Who we are Kassavirtanen is a growing invoicing service company that designs and develops its own systems, websites, and digital services for businesses. We operate from a modern office in the heart of Helsinkis Kamppi district, where teamwork and open...

About the role We are looking for a Front-end Developer for our client Marioff. This position is well-suited for someone at the early stage of their career. In this role, you will be able to start as soon as possible, with work available until the end of 2026. Marioffs office is located in Vantaa, and the work is done in a hybrid model, requiring you to work...

Maybell Quantum is growing quickly, and we are expanding our technical group in Finland! If joining an outstanding team at one of the most exciting companies in quantum computing sounds interesting, then Maybell may be the place for you.Maybell is a venture-backed startup of scientists, engineers, visionaries, and innovators designing and building the...

Kassavirtanen Oy etsii Junior Front-End -kehittäjää vahvistamaan kehitystiimiä. Tehtävässä rakennetaan käyttöliittymiä, tehdään yhteistyötä backendin kanssa ja tuotetaan laadukkaita, responsiivisia sovelluksia asiakkaidemme tarpeisiin.Hakija hallitsee Reactin ja JavaScriptin, osaa kirjoittaa puhdastaa koodia ja osaa SQL-tietokantoja sekä...

Marioff is seeking a Front-end Developer to join the team at an early stage of your career. The position is based in Vantaa with a hybrid work model requiring at least two days per week in the office. You will contribute to UI improvements and feature work in a React/TypeScript environment.Key tasks include updating labels and tooltips, fixing layout bugs,...

Siili is at the forefront of AI-powered digital development. We work with clients to turn ambitious ideas into production-ready AI solutions, spanning enterprise platforms, MLOps foundations, and LLM-powered applications embedded into core processes.You’ll lead architectural efforts, guide teams, and ensure AI initiatives deliver measurable business value....

ZEAL Network is seeking a Senior Product Manager to own the development and continuous improvement of a digital consumer product. You will translate business goals and customer needs into clear product priorities, own the roadmap, and drive initiatives from discovery through delivery and iteration.This hands-on role requires owning end-to-end product...

Reaktor in Helsinki is seeking AI Developers to join a collaborative tech community focused on building LLM-powered applications across the full software lifecycle.You’ll design end-to-end AI software, integrate OpenAI/Anthropic/Meta models, and work with RAG pipelines, embeddings, and vector stores while collaborating with client teams to select the right...

Aiven is seeking a Fullstack Software Engineer to join the Kafka Ecosystem team in Helsinki. You will build end-to-end features with Python in orchestration of managed Apache Kafka services across clouds, contribute to Karapace, and develop React interfaces that users interact with.Your focus will be Python, spanning API design to the UI. You will extend...

Reaktor's award-winning tech community in Helsinki is seeking full-stack developers to join our team for work across the entire software development lifecycle, from front-end to production.You’ll collaborate with client tech and business teams to select technologies, implement features across frontend, backend and databases, and deliver world-class...

Reaktor's award-winning tech community is looking for Lead Developers to join us in Turku. If you are in your element with a full software development cycle, have a passion for solving human problems with a holistic approach, and are curious to experience working in a low-hierarchy environment, you might just be what we’re looking for. As a Lead Developer...

## End User and Country Director FinlandApply: Espoo, Uusimaa, Finland: Full time: Posted Yesterday: 3169369End User and Country Director Finland**Description -****Job Summary** • This role is responsible for supporting senior leadership in developing strategic sales plans and pricing strategies while overseeing the sales team to achieve growth...

Accenture is seeking a Senior Fullstack Developer to design and implement end-to-end software across UI, APIs, and data layers in a dynamic, AI-enabled environment. You’ll influence architecture, mentor teams, and drive AI-assisted workflows, leveraging modern tech and cloud services.You’ll work with React.js and Java, collaborate across teams, and own...

End User and Country Director Finland Description - Job SummaryThis role is responsible for supporting senior leadership in developing strategic sales plans and pricing strategies while overseeing the sales team to achieve growth and profitability targets. The role acts as a trusted advisor to customer leaders, manages resource allocation, and ensures...