Staff Fullstack Engineer

Staffbase; Dresden; On-site; EUR 120,000 - 180,000; Full time

Job summary

Staffbase is seeking a Fullstack Staff Engineer on the Actions team to define the extensibility framework across the Staffbase platform. You will build the core systems, set the standards for plugins and integrations, and empower teams to extend with Workday, Personio, ServiceNow, and Microsoft.

You will mentor engineers, lead architectural decisions, and shape long-term scalability while balancing flexibility and standardisation to support diverse customer needs.

Qualifications

• Design and implement extensibility strategies for a large-scale B2B platform.
• Proven experience as Staff Engineer or Technical Lead with strong leadership.
• Experience building extensibility within SaaS, with vendor integrations and plugins.
• Strong backend skills in Java/Kotlin or Go and frontend in React.
• Deep understanding of multi-tenant architectures and standardisation trade-offs.

Responsibilities

• Define and drive Staffbase’s extensibility framework, SDKs and standards.
• Lead technical strategy and architecture decisions across multiple teams.
• Mentor engineers and foster ownership and technical excellence.
• Collaborate with Product, Design, and Labs to deliver customer value.
• Improve CI/CD and development processes for faster delivery.

Skills

Extensibility design

Java/Kotlin

Go

React

Leadership

Staff Engineer experience

Multi-tenant architecture

SDKs

Plugin systems

CI/CD pipelines

Architecture frameworks

Tools

SDKs

Plugin systems

CI/CD pipelines

Architecture frameworks

Job description

• As a Fullstack Staff Engineer on the Actions team, you’ll take on one of our most important platform challenges: defining how extensibility works across Staffbase
• Today, extensions power everything from HR integrations to the actions our AI assistant, Navigator, performs on a user’s behalf — but there’s no single, easy way to build and extend. That’s what you’ll design
• Your north star is a framework that our engineers, our Labs team, and eventually customers themselves can use to build their own extensions, whether that’s a one-off integration for a single customer or a tier-one capability used across our entire base
• You’ll build the core, define the standards, and make the calls on where we standardise versus where we stay flexible, all on a mature, multi-tenant platform
• The Actions team sits at the heart of Staffbase’s AI ambitions. We’re the team that gives Navigator — our AI assistant and the main entry point into Staffbase — the ability to actually do things: submit a form, complete a task inside an integration, or take an action on a user’s behalf through the agent. If Navigator is the brain, we build the hands
• That means two big things. First, we enrich what the AI can see and act on, our plugins, our widgets and the wider Staffbase platform so the assistant can do real work, not just talk about it
• Second, we build the extensions that connect to the tools people already use, like Workday, Personio, ServiceNow and Microsoft
• We’re not just shipping features, though. A core part of our mission is building the extensibility framework that lets others build too
• Define and drive Staffbase’s extensibility strategy, designing the framework, SDK and standards that let our teams and customers build their own extensions and integrations
• Build the core systems that enable our AI assistant to take action across Staffbase and connect to external providers
• Lead technical strategy and architecture
• Influence technical decisions and their documentation, driving long-term sustainable solutions to accommodate future growth and requirements
• Continuously improve and refine our development processes, CI/CD pipeline, and automation practices to foster a productive development experience
• Take ownership of major technical decisions, proactively addressing system bottlenecks and ensuring product quality
• Contribute to and maintain technical roadmaps with engineering leadership to align project priorities and business goals
• Manage and prioritize projects and initiatives across multiple teams
• Foster a culture of ownership, technical excellence and continuous improvement within the team
• Role modeling and developing others in the craft of Product Software Engineering
• Mentor and guide engineers, providing leadership, feedback and fostering growth through code reviews and technical discussions

This is a role for someone who wants to drive, not just deliver, shaping the direction of a genuinely open-ended problem and setting the technical foundations others will build onPassion for diversity and inclusion, and the ability to foster a culture where the team can move forward at speed while ensuring that everyone’s voice is heard and they can contribute their bestAbility to drive technical direction, including making decisions on architectural trade-offs and evaluating the long-term impact of technical choicesPrevious experience working alongside Product and Design Leaders to deliver customer value in an Agile environmentProven experience designing and building extensibility within a B2B / enterprise platform, SDKs, plugin systems, or extension frameworks that let internal teams and external customers build on top of a core product, with the judgment to define what “good” extensibility looks like from the ground upPassion for building high-quality softwareProven track record as a Staff Engineer or Technical Lead with strong leadership and problem-solving skillsExtensive experience with Java/Kotlin or Go on the backend and React on the frontendStrong communication skills with the ability to articulate complex technical concepts to various stakeholders, both technical and non-technicalKnowledge of architecture and design patternsStrong problem-solving skills and ability to work collaboratively in a fast-paced, dynamic environmentExperience managing architecture projects across multiple development teams, aligned with their roadmaps and stakeholdersDeep understanding of multi-tenant architecture, with strong judgment on where to standardise versus where to stay flexible in platform design