Senior Staff Engineer

Job description

About us Join bonify, Germany’s leading platform for credit scoring and financial management. We are on the mission to revolutionize the FinTech industry and make the credit score and financial data available and transparent for our users. We are seeking a talented Senior Staff Engineer to join our dynamic team in Berlin. We're hiring a Senior Staff Engineer to shape the future of our AWS-based platform and provide technical leadership across the engineering organization. This role goes beyond backend development. You'll drive architecture, platform strategy, cloud evolution, and engineering standards with an end-to-end mindset . We expect strong partnership across the stack and departments to deliver high-quality, reliable outcomes. You will act as a force multiplier across teams, setting technical direction while staying hands-on where leverage is highest. Your tasks Technical Strategy & Architecture Define and evolve the long-term technical vision for backend services, platform capabilities, and cloud architecture Lead cross-domain architectural initiatives spanning multiple teams and business areas Drive modernization efforts that improve scalability, reliability, security, and developer productivity Establish architectural principles, engineering standards, and technical governance practices Guide major technology decisions including service boundaries, runtime choices, deployment models, and platform investments Evaluate emerging technologies and determine where they create meaningful business value AWS & Platform Leadership Act as a senior authority on AWS architecture, operational excellence, and cloud-native system design Define best practices for AWS services including Lambda, ECS/Fargate, API Gateway, EventBridge, SQS, SNS, DynamoDB, RDS, CloudFront, and related platform services Drive improvements in cloud security, resilience, disaster recovery, observability, and compliance readiness Lead cloud cost optimization initiatives and establish sustainable operational practices Influence Infrastructure-as-Code, deployment automation, and platform engineering strategy Partner closely with infrastructure and security teams to evolve our platform capabilities Engineering Excellence Raise engineering quality through architectural reviews, design guidance, and technical mentorship Improve system observability, incident response, operational readiness, and reliability engineering practices Reduce organizational complexity through standardization, reusable platform capabilities, and stronger engineering defaults Drive pragmatic decision-making around technical debt, modernization, and platform investments Establish frameworks for measuring and improving engineering effectiveness Cross-Functional Impact Partner with product, design, data, frontend, and infrastructure teams to align technical strategy with business goals Help teams make better technical decisions through coaching, reviews, and architectural consultation Improve end-to-end developer experience through shared tooling, contracts, APIs, and platform capabilities Act as a trusted advisor to engineering leadership on technical risk, roadmap planning, and organizational scaling Full-Stack Perspective Contribute to frontend and full-stack architecture discussions where needed Help establish patterns for frontend-backend integration, shared contracts, performance, and reliability Occasionally contribute hands-on across the stack to unblock critical initiatives or validate architectural approaches Drive improvements to end-to-end customer experience, not just backend systems AWS & Cloud Expertise Deep expertise designing, building, and operating production systems on AWS at scale and services like Lambda API Gateway EventBridge SQS / SNS ECS / Fargate DynamoDB RDS IAM CloudWatch CloudFront Route53 VPC networking Strong hands-on experience with serverless architectures, event-driven systems, and modern cloud-native platforms Strong understanding of cloud security, compliance, resilience, disaster recovery, and cost optimization Experience defining cloud architecture standards and governance practices Backend & Distributed Systems Expert-level TypeScript experience in backend and service-oriented environments Deep understanding of distributed systems, scalability patterns, fault tolerance, and operational trade-offs Experience evolving complex production environments with significant business impact Strong understanding of API design, asynchronous architectures, and integration patterns Experience with SQL and NoSQL data stores at scale Platform & Delivery Strong Infrastructure-as-Code experience (CDK, Terraform, or equivalent) Experience building internal platforms, developer tooling, and shared engineering capabilities Deep understanding of CI/CD, release engineering, and operational automation Experience balancing reliability, security, performance, and delivery speed Frontend Experience Comfortable working within modern TypeScript, React and React Native frontend applications Experience collaborating closely with frontend engineers on architecture and system design Ability to debug and optimize end-to-end flows across browser, APIs, services, and data layers Familiarity with modern frontend frameworks and frontend operational concerns Able to contribute meaningful code when required, while remaining primarily backend-focused Requirements 7+ years of engineering experience Deep AWS expertise across serverless, cloud-native, and distributed systems Proven success leading organization-wide technical initiatives Strong TypeScript and backend architecture experience Experience with Infrastructure-as-Code, CI/CD, and platform engineering Ability to contribute across the stack, including frontend collaboration and debugging Strong communication and leadership skills with a track record of influencing at scale If you enjoy shaping engineering organizations, modernizing platforms, and solving complex technical challenges with lasting impact—we'd love to talk. What we offer As part of the bonify team, you'll have: The opportunity to take ownership from day one The chance to thrive in a dynamic and flexible startup environment. Access to extensive coaching and training programs through our personal development budget 30 vacation days Mental health support platform Subsidies for BVG and UrbanSportsClub 1:1 language classes in both German and English. The Company is committed to the principle that no employee or job applicant shall receive unfavourable treatment on grounds of age, disability, gender reassignment, race, religion or belief, sex, sexual orientation, marriage or civil partnership, pregnancy, and maternity. Please note, to be compliant with AML requirements, due to the specifics of fintech industries additional background checks are required (applicable only at the offer stage). If you're ready to make a meaningful impact in the world of FinTech and embark on an exciting career journey, apply now to join bonify!