Senior/Staff Software Engineer

Mbianchi; Amsterdam; Hybrid; EUR 195,000 - 260,000; Full time

Job summary

Mbianchi in Amsterdam is seeking a senior software engineer who can own outcomes across APIs, services, CLIs, and interfaces, balancing architecture with hands-on delivery. You will work with Go, Python, TypeScript, Rust, and React to shape scalable systems.

You will lead architecture decisions, improve quality with tests and observability, and collaborate with users and product teams to ship value. The role emphasizes impact and low bureaucracy while tackling complex platform work.

Qualifications

• At least 7+ years of software engineering experience.
• Experience designing APIs and distributed systems that are observable, secure, and operable under real load.
• Comfort moving between backend, infrastructure, automation, and enough frontend work to finish the product.
• Good judgement about build versus buy, abstraction boundaries, migrations, and technical debt.
• Strong communication to explain trade-offs to engineers and stakeholders.

Responsibilities

• Design and build reliable APIs, services, event-driven workflows, CLIs, and product interfaces.
• Lead architecture decisions across performance, security, data, operability, and long-term maintainability.
• Raise engineering quality through tests, reviews, observability, documentation, and deliberate simplification.
• Work directly with users, product, and customer-facing teams to turn ambiguous needs into shipped software.
• Mentor engineers, unblock complex delivery, and improve standards across multiple teams or domains.

Skills

Go

Python

TypeScript

Rust

React

Job description

APIs, services, CLIs, interfaces, automation, and system design in Go, Python, TypeScript, Rust, and React.

The mandate.

Own the outcome, stay close to the implementation, and improve the system around the work.

Own consequential software problems from architecture through operation: APIs, services, CLIs, interfaces, and automation that connect technical quality to a measurable product or business outcome.

The role should combine staff-level technical direction with hands‑on delivery, improving the surrounding system rather than optimising one isolated repository.

Impact Material

Agency High

Management Context, then space

Bureaucracy Low

What this role owns.

• OWN-01

  Design and build reliable APIs, services, event-driven workflows, CLIs, and product interfaces.

• OWN-02

  Lead architecture decisions across performance, security, data, operability, and long-term maintainability.

• OWN-03

  Raise engineering quality through tests, reviews, observability, documentation, and deliberate simplification.

• OWN-04

  Work directly with users, product, and customer-facing teams to turn ambiguous needs into shipped software.

• OWN-05

  Mentor engineers, unblock complex delivery, and improve standards across multiple teams or domains.

What this needs.

• Strong software fundamentals and substantial production experience in more than one programming ecosystem.
• Experience designing APIs and distributed systems that are observable, secure, and operable under real load.
• Comfort moving between backend, infrastructure, automation, and enough frontend work to finish the product.
• Good judgement about build versus buy, abstraction boundaries, migrations, and technical debt.
• The communication skills to explain trade-offs to both engineers and non-engineering stakeholders.

What success looks like.

• Complex product work ships in understandable increments without creating a maintenance trap.
• System performance, reliability, and developer velocity improve together.
• Architecture decisions remain legible after the original author leaves the room.
• Teams spend less time compensating for unclear ownership, brittle interfaces, and repeated manual work.

Top-quartile ranges for this scope. Ranges are base salary; equity and bonus may be additional. The cash/stock split is negotiable.

EMEA €195k–€260k Base salary Top-quartile EMEA target

US remote $220k–$285k Base salary Remote US target

US major hubs $275k–$325k Base salary San Francisco, Seattle, New York, and comparable markets

Who you need to be

• At least 7+ years of software engineering experience.
• Built platform APIs, services, and automation used by 70+ engineers and millions of end users.
• Worked with different programming languages, with a preference for Go, Python, and TypeScript (Node.js, React).
• Built cloud and application systems across different domains: healthcare, SaaS, government, media, fashion, and developer tooling.
• Created automation that removed developer toil.

Looks compatible.

Real impact, useful autonomy, and enough technical depth to finish the job.