Senior Backend/DevOps Engineer

Your mission

About Us

We’re building a new kind of mortgage experience: transparent, digital, and truly customer-

centric. We are a Berlin-based B2C Fintech founded by two repeat founders (YC alum, exit) with

prior 10+ year careers in investment banking and strategy consulting. We recently raised

investment to assemble a 30-person, exceptionally strong core team. Our culture is built on

ownership and clarity. We align with you on vision, set clear KPIs and resources together, and

then trust your drive and expertise.

The Opportunity

Buying property (and financing it) is probably the biggest financial decision in someone’s life.

It’s complicated, opaque, and anxiety-laden. As a Senior Backend / DevOps Engineer, you will

work alongside our CTO on building and evolving our fintech product. Our core architecture

and cloud infrastructure are already in place and running in production — you’ll spend

roughly 70% of your time shipping backend features and 30% on infrastructure and

operations. You’ll have significant autonomy to shape how we build, deploy, and scale.

Your profile

What You’ll Do

Developing backend features and APIs within our microservices architecture Designing and implementing event-driven patterns and workflow orchestration Working with PostgreSQL — schema design, migrations, query optimization Integrating with external APIs (mortgage platforms, CRM, document processing) Extending cloud infrastructure (Terraform, Helm) for new services and capabilities Improving CI/CD pipelines and deployment processes Implementing monitoring, logging, and observability systems Optimizing system performance, reliability, and scalability Collaborating on technical decisions and architecture evolution Ensuring code quality, security, and operational best practices

Our Stack

Backend: Node.js 22, TypeScript (strict), Fastify Database: PostgreSQL, Redis (caching, streams, sessions) Orchestration: Temporal (self-hosted) for durable workflows Architecture: Microservices monorepo, event-driven with CDC pattern, real-time via

Socket.io

Monitoring: Prometheus, Grafana (structured logging, metrics, alerting) Cloud: GCP — GKE Autopilot, Cloud SQL, Memorystore, Cloud Storage, Document AI Infrastructure: Terraform, Helm, GitHub Actions CI/CD, Cloudflare AI/ML: LLM integrations (OpenAI, Anthropic, Google), GCP Document AI for document

processing

Frontend: React 19, Vite (not your primary focus, but good to know)

What You Bring

Hard Requirements

Node.js/TypeScript Expertise: Strong proficiency in Node.js and TypeScript for

building high-performance backend services. Understanding of async patterns, streams,

and Node.js performance optimization is essential.

Event-Driven Architecture: Deep, hands-on experience designing and implementing

event-driven systems with messaging patterns (Kafka, RabbitMQ, GCP Pub/Sub, or

Redis Streams). You understand eventual consistency, saga patterns, and can articulate

trade-offs.

Microservices Architecture: Proven track record building, deploying, and scaling

microservice-based systems in production. You know when to split services, how to

handle distributed transactions, and how to avoid common microservices pitfalls.

GCP Hands-On Experience: Real production experience with GCP — not just

familiarity. You’ve worked with GKE, Cloud SQL, Memorystore, Cloud Storage, Secret

Manager, and can navigate the GCP ecosystem confidently.

Additional Technical Skills

Extensive experience with SQL databases (PostgreSQL preferred) Strong foundation in RESTful API design Proficiency with containerization (Docker) and orchestration (Kubernetes) Experience with CI/CD tools (GitHub Actions, Cloud Build, or similar) Infrastructure as Code with Terraform or similar tools Understanding of observability: structured logging, distributed tracing, metrics, and

alerting

Knowledge of API security, authentication/authorization (OAuth 2.0, JWT), and data

protection

Experience with workflow orchestration (Temporal or similar) is a strong plus

Mindset & Approach

0→1 Production Experience: You’ve been through production launches before and

know what it takes — setting up infrastructure, handling edge cases, ensuring

reliability, and managing the inevitable surprises.

Pragmatic Perfectionism: You balance technical excellence with business velocity —

you know when to refactor and when to ship quickly.

Ownership Mentality: You’re proactive, resourceful, and accountable for your work —

you don’t wait to be told what to do.

Team Player: You collaborate well with others, give and receive feedback gracefully,

and elevate those around you.

Systems Thinking: You understand how components interact, design for reliability

and maintainability, and think beyond your immediate feature.

Clear Communication: You can explain technical decisions to non-technical

stakeholders, document your work, and participate constructively in technical

discussions.

Continuous Learner: You stay current with industry trends, experiment with new

technologies, and are energized by technical challenges.

Why us?

What We Offer

Competitive salary Participation in our employee options programme On-site in Berlin, with flexible remote work as you see fit High autonomy, low politics, fast decision-making The chance to help build something new, with real influence on how people buy homes

in Germany!

About Us

We are an equal opportunity employer. We value diversity and are committed to an inclusive environment for all employees. If you are excited about the role but don't meet 100% of the requirements, we would still love to hear from you.