Technical Leader

Expected, Java, Kotlin, Spring, Spring Boot, Docker, Kubernetes, Kafka, RabbitMQ, MQTT, GraphQL, AWS, Terraform, REST API, CI/CD, React, TypeScript

Optional, Python, Go, Rust, GenAI, RAG, LLMs, Datarbicks, Kafka Streams, ETL

Operating system, Windows, macOS

About the project, Grape Up is a consulting & technology company that helps enterprises build and modernize their most critical applications, combining cloud-native engineering with applied AI., , We specialize in connected vehicle platforms and software-defined vehicle architectures for premium automotive manufacturers – systems that process telemetry from fleets of hundreds of thousands of vehicles in production. We also work across aviation and manufacturing, applying the same cloud-native engineering approach to mission-critical, regulated systems., , Alongside automotive, we run large-scale legacy modernization programs for mission-critical enterprise systems, increasingly powered by our in-house GenAI/agentic platform – used for code transformation, documentation generation, and test generation on multi-million-line codebases.

This is how we work, at the client's site, you focus on a single project at a time, you can change the project, you have influence on the choice of tools and technologies, you have influence on the technological solutions applied, you have influence on the product, you develop the code "from scratch", you focus on product development, agile, scrum

Team members, fullstack developer, devOps, automated test programmer, product owner, project manager

Your responsibilities, You’ll take a new engagement from a blank page – no existing codebase, a loosely defined problem – and turn it into a solid, production-grade platform, Own end-to-end technical architecture for new client engagements – from initial discovery and technology selection through PoC, MVP, and production rollout, Act as the primary technical counterpart for the client: translate business goals into an actual technical design and run technical workshops to walk stakeholders through it, Proactively surface risks, technical debt, and better alternatives, Lead and mentor cross-functional engineering teams: set technical direction, review key design decisions, and raise the technical bar without becoming a bottleneck, Contribute to presales and scoping: effort estimation, solution outlines, and technical input into commercial proposals – including presenting the architectural/technical part directly to prospective clients, Stay hands-on where it matters – critical prototypes, spikes, and architecturally significant code – rather than operating purely at the whiteboard level

Master’s degree in computer science, Engineering, or a related field, 8+ years of commercial software engineering experience, including at least 3 years designing architecture for systems that reached production – not only participating in design as a senior IC, Strong hands-on background in Java or Kotlin (Spring / Spring Boot) proven on enterprise-scale microservice systems: security, scalability, resilience, async communication, Practical production experience with at least one public cloud (AWS preferred; Azure or GCP acceptable), including containerization (Docker, Kubernetes) and infrastructure-as-code (Terraform or equivalent), Comfort with distributed-systems building blocks: messaging (Kafka, RabbitMQ, or MQTT), REST/gRPC/GraphQL APIs, CI/CD pipelines, Hands-on frontend coding ability: able to personally ship production features in React and TypeScript, not just review or advise on frontend architecture, A track record of owning at least one greenfield build or major re-architecture – able to walk through the trade-offs made and why, not just the patterns used, Experience leading or mentoring engineers formally or informally (tech lead, team lead, or similar) – this role will set direction for other developers, Very good spoken and written English (C1) – this role runs client meetings independently, often with non-Polish stakeholders, Proactivity and ownership: propose solutions and take responsibility for outcomes, rather than waiting for tasks to be assigned, Strong presentation skills – able to present the technical/architectural part of a solution as part of client offer presentations and lead technical workshops with client stakeholders, Influence without authority: able to push back on a client or a team decision with a well-reasoned alternative and get buy-in for it, Business fluency: genuinely comfortable translating technical concepts into business language and building real relationships with client stakeholders

Optional, Hands-on exposure to GenAI/LLM tooling – RAG-based systems, agentic workflows, prompt engineering, or AI-assisted code modernization., Experience in the automotive, connected-vehicle, or IoT domain (telemetry pipelines, digital twin, software-defined vehicle) – directly relevant to our current project mix, Additional languages beyond Java/Kotlin – Python, Go, or Rust, Experience with data platforms and pipelines (e.g., Databricks, Kafka Streams, ETL) or systems ingesting high-volume device/fleet data, Prior consulting or professional services background – comfortable with ambiguity and switching context across concurrent engagements, Cloud architecture certification (AWS/Azure/GCP)

What we offer, Non-corporate work environment among experienced engineers, Individual growth & development plan supported by cyclical feedback sessions, Access to knowledge platforms (e.g. Pluralsight), Equipment of your choice, Financing of conferences, external trainings, and certifications, Language lessons (English, German and Polish for foreigners), LuxMed private medical care, Weekly Lunch & Learn where we meet up in the office, lunch together, and share our knowledge, Employee referral program, Rewards for the success of the month and year awarded by our employees, Special rewards for your years with us (G-Man), Integration activities

This is how we work on a project, Clean Code, code quality measures, code review, design patterns, static code analysis, pair programming, TDD, architect / technical leader support, Continuous Deployment, Continuous Integration, DevOps, documentation, issue tracking tools, functional tests, integration tests, performance tests, regression tests, test automation, testing environments, unit tests

Development opportunities we offer, assistance in preparation to public speeches, external training, industry-specific e-learning platforms, substantive support from technological leaders, support of IT events, technical knowledge exchange within the company

Benefits, private medical care, sharing the costs of foreign language classes, sharing the costs of professional training & courses, remote work opportunities, flexible working time, fruits, integration events, corporate library, no dress code, video games at work, coffee / tea, drinks, parking space for employees, leisure zone, extra social benefits, baby layette, employee referral program, charity initiatives

Recruitment stages, Application, HR + technical interview, Meeting with the Manager, Offer, Feedback

Grape Up Sp. z o.o., Hi, we are Grape Up!, Our company provides technology consulting and modern software development services for mission-critical products. We specialize in delivering innovative solutions powered by cloud and AI.

This is how we work,