Agentic Backend Engineer (Golang)

Job Details

Job Title: Agentic Backend Engineer (Golang)

Location: Preferably in or near Vienna, or within a 2‑hour time zone difference

Languages: English (fluent), any other European language is a plus

Experience: Over 5 years of backend development using Golang and other OOP languages, contributing to our SaaS platform and managing the full software lifecycle

Contract: Full time (no freelancing)

Who We Are

Millions of people interact with fiskaly every day, even if they don’t realize it. As a B2B company, we power the retail technology behind digital receipts and secure, legally compliant transactions.

By making receipts tamper‑proof through digital signatures, we help fight tax fraud. With our paperless receipt solution, we offer consumers a modern alternative while helping merchants streamline their operations.

Our solutions may sound complex, but our mission is simple: make receipts easy for everyone .

The Role

In this role, you aren’t just a “Senior Dev.” You are an Agentic Architect . You will design the frameworks that allow AI agents to write, test, and deploy our microservices.

The 90/10 Rule: Spend 90% of your time designing the agents, prompts, feedback loops, and system architecture. Act hands‑on for the final 10%, handling precision tuning, complex edge cases, and creative perfection that AI cannot reach.

What You’ll Do

• Agentic Orchestration: Design and implement multi‑agent workflows (using frameworks like LangChain, LangGraph, or custom Go‑based orchestrators) to automate the full software development lifecycle.
• Build the "Machine": Create autonomous systems that take high‑level requirements and output production‑ready, strictly‑typed Golang microservices.
• Architect for Autonomy: Design system boundaries and APIs specifically so they are "agent‑friendly", ensuring LLMs can navigate, understand, and extend our codebase without hallucinations.
• Reliability Engineering: Implement robust verification loops. Build the "Judge" agents that audit the "Coder" agents to keep our fiscal signatures tamper‑proof and legally compliant.
• Human‑in‑the‑Loop Design: Define touchpoints where human expertise is most impactful, ensuring a seamless and safe transition to agentic engineering.

What You Bring

• The "Force‑Multiplier" Mindset: You find writing boilerplate physically painful and have a proven track record of using AI to do the work of five engineers.
• Golang Mastery (5+ Years): You know Go well enough to distinguish between "hallucinated garbage" and "idiomatic excellence."
• Systems Thinking: Deep experience in distributed systems, Kubernetes, and Cloud‑Native DNA, with the ability to wrap agents around complex infrastructure.
• Agentic Experience: You have experimented with or deployed multi‑agent setups and understand the difference between a simple "prompt" and a "recursive autonomous loop."
• Obsession with Perfection: Since you only write 10% of the code, that 10% must be flawless. You are a master of the "final polish."

What We Offer

• A culture that encourages the use of the latest tech. If an AI tool helps you code 20% faster, we want you to use it.
• A supportive environment where you can try new things, fail safely, and learn constantly.
• Flexible working hours and a hybrid work arrangement (office in Vienna, Berlin, Madrid, Milan, or remote).
• Work permit sponsorship for qualified candidates.
• A dedicated budget for personal and professional development and regular 1:1 career planning.
• Company hardware of your choice (Windows, Linux, or Mac).
• A vibrant, inclusive company culture that values your well‑being and personal growth.

Why fiskaly

Joining fiskaly means contributing to a mission‑driven company that is redefining how compliance is done in Europe and beyond. Here, you’ll grow, innovate, and make a real impact on the finance operations of a scaling SaaS company.