Software Engineer, Full-Stack

Superhuman offers a dynamic hybrid working model for this role. This flexible approach gives team members the best of both worlds: plenty of focus time along with in-person collaboration that helps foster trust, innovation, and a strong team culture.

Grammarly is now part of Superhuman, the AI productivity platform on a mission to unlock the superhuman potential in everyone. The Superhuman suite of apps and agents brings AI wherever people work, integrating with over 1 million applications and websites. The company’s products include Grammarly’s writing assistance, Coda’s collaborative workspaces, Mail’s inbox management, and Go, the proactive AI assistant that understands context and delivers help automatically. Founded in 2009, Superhuman empowers over 40 million people, 50,000 organizations, and 3,000 educational institutions worldwide to eliminate busywork and focus on what matters. Learn more atsuperhuman.com.

To achieve our ambitious goals, we’re looking for Full-Stack Software Engineers to join our engineering teams. As a Full-Stack Engineer at Superhuman, you will play a critical role in building core parts of the Superhuman product offering, infrastructure, and features to help 40 million users write more clearly and effectively every day.

Superhuman engineers and researchers have the freedom to innovate and uncover breakthroughs—and, in turn, influence our product roadmap. The complexity of our technical challenges is growing rapidly as we scale our interfaces, algorithms, and infrastructure. You can hear more from our team on our technical blog.

Superhuman is growing rapidly. There are opportunities to join a team, learn from experienced peers, and build product offerings and teams from the ground up. Within our growing engineering organization, there is plenty of room for ownership and direct impact on users.

Join the AI Tools team — the team building the agentic systems that Superhuman engineers use every day. Our product is engineering leverage. You'll work at the frontier of agentic software — owning real production systems where non-determinism, evals, and developer trust are first-class concerns.

As a Full-Stack Engineer, you will:

• Start building and pushing code in your first week and ship impactful features in your first few months.
• Design and ship agentic features in internal development tools.
• Build evaluation frameworks for non-deterministic agent behavior — define what "working" means before shipping.
• Own end-to-end systems: prompt design, tool integration (MCP / function calling), orchestration, observability, cost.
• Move fast in a space where best practices are being invented monthly; bring rigor without slowing down.
• Partner with eng leadership across SH to measure and improve developer throughput.
• Contribute to an engineering culture that prioritizes impact above all else.
• Evaluate the systems and technology currently in place, and propose systems and architecture that can scale for the future.
• Have the opportunity to mentor new hires.

• Brings at least three years of experience in Full-Stack development.
• Displays excellent software engineering fundamentals, including knowledge of algorithms and data structures.
• Cares about the internal user experience and strives to prioritize impact over everything.
• Has experience building, deploying, and debugging production systems at scale.
• Demonstrates perseverance when faced with tough technical issues.
• Hands-on experience building with LLM APIs (Anthropic / OpenAI / equivalent), including tool use, structured outputs, and multi-turn agent loops.
• Strong intuition for developer experience — opinions on what makes a tool feel good to engineers.
• Comfort with non-determinism: thinks in distributions and evals, not pass/fail tests.
• Has a demonstrated ability to work independently with minimal guidance, proactively manages tasks and priorities across multiple projects, analyzes and executes work efficiently, collaborates effectively with cross-functional teams, and thrives in fast-paced, results-driven environments.

We invite you to share your knowledge, experience, and goals with us to help us find the best team match for you. Tell us your superpower!

• Professional growth: We believe that autonomy and trust are key to empowering our team members to do their best, most innovative work in a way that aligns with their interests, talents, and well-being. We also support professional development and advancement with training, coaching, and regular feedback.
• A connected team: Superhuman builds a product that helps people connect, and we apply this mindset to our own team. Our remote-first hybrid model enables a highly collaborative culture supported by our values. We work to foster belonging among team members in a variety of ways. This includes our employee resource groups, Superhuman Circles, which promote connection among those with shared identities including BIPOC and LGBTQIA+ team members, women, and parents. We also celebrate our colleagues and accomplishments with global, local, and team-specific programs.
• Comprehensive benefits for candidates based in Germany: Superhuman offers all team members competitive pay along with a benefits package encompassing life care (including mental health care and risk benefits) and ample and defined time off. We also offer support to set up a home office, wellness and pet care stipends, learning and development opportunities, and more.
• Relocation Support: Superhuman provides comprehensive relocation support to make your move to Berlin seamless. Our package includes visa assistance, destination services to help you and your family settle in comfortably, and a relocation bonus to cover additional expenses, such as temporary housing.

At Superhuman, we value our differences, and we encourage all to apply. Superhuman is an equal-opportunity company. We do not discriminate on the basis of race or ethnic origin, religion or belief, gender, disability, sexual identity, or age.

For more details about the personal data Superhuman collects during the recruitment process, for what purposes, and how you can address your rights, please see the Superhuman Data Privacy Notice for Candidates here.