Senior Backend Software Engineer - Consumer Growth (Relocation to Milan)

Cover Letter – Senior Backend Software Engineer (Consumer Growth)
Relocation to Milan – Yes, I’m ready to move

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Dear Hiring Team at Satispay,

I am excited to submit my application for the Senior Backend Software Engineer position on the Consumer Growth team. With more than 7 years of experience designing, building, and operating high‑throughput micro‑service ecosystems on AWS, I have a proven track record of delivering secure, automated, and highly‑available backend solutions that enable millions of users to interact with financial products safely and effortlessly. The prospect of shaping Satispay’s onboarding and identity platform—core pillars of the user experience—perfectly aligns with my technical passions and my commitment to building trustworthy fintech services.

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Why I’m a Strong Fit

Requirement	My Experience & Impact
5+ years of backend engineering, micro‑services, Agile	• 7 years as a backend engineer at [FinTechCo], leading a team of 6 engineers building a suite of Spring‑Boot micro‑services (≈30 services, 150 M daily API calls). • Adopted Scrum/Kanban, delivering bi‑weekly releases with < 5 % rollback rate.
Java, Spring Boot, PostgreSQL	• Core contributor to a Spring‑Boot + PostgreSQL payment‑processing platform handling €2 B+ annual volume. • Implemented custom connection‑pooling and query‑optimisation patterns that cut latency by 30 % and reduced DB‑CPU usage by 25 %.
AWS (EC2/ECS, S3, Lambda, Kinesis, Elasticsearch)	• Designed a serverless verification pipeline (S3 → Lambda → Kinesis → Elasticsearch) that automated 85 % of manual KYC checks, cutting onboarding time from 48 h to < 4 h. • Managed ECS clusters with Terraform, introduced auto‑scaling policies that kept 99.99 % availability during traffic spikes.
Security & anti‑ATO	• Built a risk‑engine micro‑service that integrates device‑fingerprinting, behavioural analytics, and adaptive MFA, reducing account‑take‑over incidents by 70 % YoY. • Conducted regular threat‑model reviews and implemented OWASP‑top‑10 mitigations across all identity APIs.
Process automation & integration resilience	• Replaced a legacy back‑office batch job with an event‑driven orchestration workflow (Step Functions + Lambda) that auto‑retries partner API failures, eliminating downstream registration outages. • Introduced circuit‑breaker patterns (Resilience4j) for all external provider calls, achieving a 99.5 % success rate despite partner downtime.
Mentorship & engineering standards	• Mentored 4 junior engineers, instituted a code‑review checklist (security, performance, observability) that raised PR acceptance quality and reduced post‑release bugs by 40 %. • Championed the adoption of OpenTelemetry for end‑to‑end tracing, giving the whole organization visibility into latency hotspots.
English fluency & collaborative communication	• Regularly presented technical road‑maps to product, security, and compliance stakeholders (both technical and non‑technical) in English, securing alignment and budget for critical initiatives.
FinTech passion & relocation	• Deep personal interest in democratising payments—contributed to open‑source libraries for PSD2‑compliant APIs. • Currently based in Berlin, I am fully prepared to relocate to Milan and have already begun the visa‑relocation paperwork; I view this move as an exciting opportunity to immerse myself in Satispay’s vibrant culture.

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What I’ll Bring to Satispay

1. End‑to‑end ownership of the onboarding journey – From the moment a user downloads the app to the point where their data is fully GDPR‑compliant, I will design resilient, observable services that keep the flow smooth even when third‑party providers falter.

2. Security‑first mindset – By extending anti‑ATO mechanisms, tightening login flows, and embedding security checks into CI/CD pipelines, I will safeguard user funds and data without sacrificing speed.

3. Automation culture – I will continue the momentum of turning manual back‑office tasks into reliable, event‑driven workflows, driving higher activation rates and lower operational cost.

4. Technical mentorship – I will nurture the next generation of engineers through pair‑programming, knowledge‑sharing sessions, and clear engineering standards, ensuring the team scales its impact sustainably.

5. Cross‑team collaboration – My experience working with product, data, compliance, and external partners equips me to align technical delivery with business goals, keeping all stakeholders informed and confident.

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Closing Thoughts

Satispay’s mission to make payments simple, fair, and accessible resonates deeply with my own professional purpose. I am eager to contribute my expertise in Java, Spring Boot, and AWS‑native micro‑services to build the secure, automated onboarding experience that will empower millions of users across Italy and beyond.

Thank you for considering my application. I look forward to the opportunity to discuss how my background, skills, and enthusiasm for relocation to Milan can help accelerate Satispay’s growth.

Warm regards,

[Your Full Name]
Senior Backend Engineer
Phone: + [Your Phone]
Email: [Your Email]
LinkedIn: [Your LinkedIn URL]
GitHub: [Your GitHub URL]

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Attachments: Resume (PDF) – detailing full project history, technical stack, and measurable outcomes.