Senior Fullstack Engineer (f/m/d)

October 7, 2026

Hybrid

Senior

Berlin

Description

A fintech company provides an Investment API that enables businesses to offer investment products and retirement planning experiences for fintechs and financial institutions. The Senior Fullstack Engineer joins the operational service panel team whose product lets enterprise clients' operations, support and compliance staff handle first-line requests themselves. The role spans building features across a React/TypeScript frontend and Go backend, owning interface security in a regulated space, and shaping agentic operations exposed over MCP. The team ships in weekly cycles with strong autonomy, prioritizing impact, quality and speed when touching client funds.

Gender markers in the title: (f/m/d)

In accordance with European anti-discrimination legislation, this job is open to all candidates

Ffemale

Mmale

Ddiverse

Responsibilities

Take operational problems from concept to production across React/TypeScript frontend and Go backend services
Own modern interface security including per-client isolated environments, least-privilege access, and Auth0 integrations in a regulated space
Expand the operational surface across internal domains and understand how core systems piece together
Help define software delivery in an AI-enabled company by pushing AI tooling to its limits while staying compliant
Build agentic operations toward exposing the service panel over MCP with strict audit trails
Solve design problems around what an agent can do autonomously versus what requires human intervention
Work in weekly cycles with bi-weekly retrospectives to prioritize high-quality, high-frequency shipping
Figure out what needs building with client context, access, and autonomy instead of a rigid spec
Challenge internal processes that slow down efficiency or shipping speed

Requirements

Strong product engineering mindset caring about the why as much as the how
Solid backend experience in Go, Java, or Kotlin with time to ramp up in Go
Practical experience building modern client-facing interfaces using React and TypeScript
Experience building products requiring per-customer configuration without a custom fork per client
Deep knowledge of authentication, authorization, and security best practices
Strong focus on quality, extensibility, and automated testing
True end-to-end ownership across containers, CI/CD pipelines, and relational data modeling
Working understanding of event-driven architectures
Pragmatic approach to engineering with ability to make smart tradeoffs under constraints
Real-world experience using AI tools to drive software engineering workflows
Ability to navigate undefined problems and align other teams without formal authority
Experience with investment products or the fintech domain is a plus
Experience building operational or back-office tooling for business users is a plus
Experience with identity platforms such as Auth0 or multi-tenant isolation is a plus
Experience operating services in decoupled event-driven systems with modern observability tooling is a plus

Conditions

Hybrid work from hubs in Berlin, London or Tallinn, or remote across Europe depending on the role
Choice and budget to work from home or in the office
Up to 183 days per year working remotely abroad
30 days of annual leave and sports benefits
Access to confidential professional coaching
One-month fully paid sabbatical after every 4 years
Personal development budget with freedom to decide how to use it
€20 000 per year to spend on the best AI tools
Competitive above-market salary and participation in the employee equity program
Workplace culture focused on inclusion and employee resource groups

Similar jobs

Similar in meaning, not just matching keywords

This device does not meet the site requirements

What may not work

Senior Fullstack Engineer (f/m/d)

Job summary

Description

Responsibilities

Requirements

Conditions

Similar jobs

Job summary

Similar jobs

Senior Fullstack Engineer (f/m/d)

Job summaryAnalysis and summary of the descriptionGood [data-chart=chart-_R_39f1binpfiv6abqaqlb_] { --color-score: var(--warning); } .dark [data-chart=chart-_R_39f1binpfiv6abqaqlb_] { --color-score: var(--warning); } 62

Job summary

Description

Responsibilities

Requirements

Conditions

Similar jobs

Job summaryAnalysis and summary of the descriptionGood [data-chart=chart-_R_39f1binpfiv6abqaqlb_] { --color-score: var(--warning); } .dark [data-chart=chart-_R_39f1binpfiv6abqaqlb_] { --color-score: var(--warning); } 62

Job summary

Similar jobs