summer English-speaking jobs in Joensuu

Lead the development of a cloud-native platform combining React/TypeScript frontend, Python backend, AWS/Kubernetes, and quantum/HPC integrations. Drive secure identity, reliability, and engineering standards. Translate product requirements into scalable solutions and collaborate cross-functionally.

DataTribe Collective seeks a volunteer Social Media & Community Manager to manage online presence, create content, engage members, and collaborate on marketing strategies.

Senior Game Developer to maintain, scale, and optimize hit mobile games. Architect and write robust code, implement performance optimizations, and identify technical debt. Advanced Unity knowledge (7+ years), C# scripting, and experience with mobile game development required.

Lead AI & ML Engineer to design, build, and scale intelligent systems for Allocator, a product that optimizes mobile resource allocation. Responsibilities include architecting data pipelines, integrating LLMs, and leading the AI roadmap. Requires 5+ years of experience building and operating ML systems at scale.

Freelance Junior Journalist will train AI models by crafting text that teaches AI reasoning, logic, and clarity. Contributors will generate prompts, define scoring criteria, and ensure text quality.

Full-time biology and ESS teacher for preliminary and IB DP classes. Must have a master's degree, 60 ECTS credits in pedagogical studies, and 120 ECTS credits in biology or geography/environmental sciences.

Develop and define maintenance strategies with a focus on predictive maintenance for machining centers and machining operations. Analyze and improve models in collaboration with internal and external stakeholders.

Senior Firmware Engineer will lead firmware bring-up for new hardware prototypes, develop and maintain low-level drivers, and implement factory test firmware. Requires 5+ years of firmware development experience, strong embedded C/C++ skills, and proven hardware bring-up experience.

Senior Backend Engineer to design, scale, and build backend services, data pipelines, and APIs for a 3D reality capture platform. Responsibilities include API design, data pipeline development, microservices architecture, and infrastructure improvements on AWS. Requires 8+ years of professional software development experience with Python backend development, microservices, and REST API design. Strong knowledge of PostgreSQL and data modeling is essential. Experience with geospatial or GIS technologies and 3D data processing is a plus.

Staff Test Engineer to own RAN testing for NR-NTN products. Develop test plans, build automated test frameworks, and analyze protocols to ensure quality. Requires 6+ years of experience testing 4G/5G wireless networking products, deep knowledge of 4G/5G protocols, and hands-on experience with UE simulators and test automation tools.

Drive revenue growth by acting as a trusted advisor to major enterprise accounts in the construction sector. Negotiate and close complex contracts, cultivate sales pipelines, and develop strategic business plans.

Junior Software Developer will handle customer tickets, participate in shift rotation for 24/7 support, and develop apps, tools, and automations to enhance customer experience.

Design, develop, deploy, and maintain cloud-based applications using React, Node.js, and cloud platforms like GCP, Azure, or AWS. Build scalable, secure, and efficient solutions. Manage and optimize cloud environments and deployments. Collaborate in agile development teams.

Leads strategic initiatives and ensures execution to drive business growth in the Thruster Systems Business Unit. Collaborates with sales, customers, and partners to develop and implement growth strategies. Analyzes market segments and supports product strategy development.

Leads the strategy and execution of communications for Nokia's Mobile Infrastructure business segment. Serves as the primary communications partner to the Mobile Infrastructure President, providing counsel on positioning, reputation, and stakeholder engagement. Develops and owns the integrated communications strategy for the business group, anticipating key business moments, product milestones, industry events, and competitive dynamics. Operates within Nokia's functional communications model, drawing on media relations, internal communications, analyst relations, and agency resources. Requires extensive senior communications experience within the technology, telecoms, or infrastructure sector. Proven ability to develop and execute integrated communications strategies. Strong executive communications and advisory skills with experience preparing and positioning senior leaders for high-profile engagements.

Statistician to design and carry out statistical analyses and standard reporting to support data-driven decision-making in pharmaceutical manufacturing and operations. Collaborate with stakeholders in Production, Operations Development, and other Global Operations functions.

Fiber Project Manager will oversee maintenance, relocations, and repairs of the Finnish fiber network. Responsibilities include ensuring quality handover from construction to operations, liaising with local authorities and contractors, and planning projects to prevent damage and downtime. Must have project management experience in fiber or telecom environments, fluency in Finnish, and proficiency in English.

Drive business strategy, manage sales pipeline, and sell Google Ads solutions to C-level clients. Possess deep industry knowledge, understand competitive landscape, and provide leadership and guidance to drive customer growth.

Technical Specialist will contribute to the operation and development of Elisa's fixed broadband core functions, supporting stable, high-performing broadband access. Responsibilities include BNG & Broadband Network Operations, Automation & Tools Development, and Access & Authentication.

Develop and maintain product configuration solutions and integrations. Translate user requirements into specifications and design, configure, and develop solutions. Collaborate with stakeholders and teams to ensure smooth delivery and manage solution roadmaps.