Staff Software Engineer

Shine Event Staffing; Porto; Hybrid; EUR 65,000 - 90,000; Full time

Job summary

Shine ERP Engineering Team in Porto is seeking a Domain Engineer to define architecture direction, ensure engineering standards, and collaborate with senior engineers to align technical decisions with business goals.

This senior IC role focuses on cross-cutting impact, with half time embedded with engineering teams and half on architecture initiatives. We are modernizing our stack to address scale and domain complexity while enabling two remote workdays.

Qualifications

• Significant hands-on experience designing and evolving systems at scale.
• Experience with multi-tenant SaaS or platform environments.
• End-to-end architecture ownership and clear decision logging.
• Strong ability to translate technical trade-offs for product and leadership.

Responsibilities

• Own the target architecture of your domain and the path to get there.
• Ensure reliability, scalability, security, and compliance are design constraints from day one.
• Maintain architecture documentation (C4 diagrams, ADRs) as part of workflow.
• Set and calibrate design review thresholds, delegating to senior engineers.
• Spend roughly half time embedded with engineering teams, half on cross-engineering work.
• Grow architectural judgment of senior engineers to reduce reliance on you.
• Partner with Engineering Directors, Engineering Managers, and Product to surface constraints clearly.

Skills

Domain engineering

System design

Multi-tenant SaaS

.NET

Angular

SQL Server

Azure

CI/CD

Architectural ownership

Cross-functional communication

Tools

C4 Model

ADRs

Architecture Forum

Job description

Shine is the financial copilot for entrepreneurs and small business owners.

Founded by serial entrepreneurs Rico Andersen and Martin Hegelund, Shine is a leading European fintech unicorn on a mission to restore the joy of running a business, by ending wasted time on financial admin. Shine offers a connected solution for invoicing, accounting, payroll, business accounts, payments, and financing, meaning business owners can focus their energy on growing a healthy business, not held back by manual admin.

Part of something bigger

Today we’re part of Cegid, a European leader in cloud software for finance and accounting. Together we’re building Europe’s leading financial copilot for small businesses and their accountants.

Shine already supports more than 400,000 small businesses. As part of Cegid, we now reach over one million small businesses and 15,000 accountants across Europe.

We’re a multicultural team working from France, Germany, Denmark and the Netherlands, contributing to a wider European network that spans Spain, Portugal.

Your Hiring Experience Matters

Just as we respect our customers' time, we respect yours. Your experience with Shine and Cegid should feel simple, transparent and genuinely supportive.

If this sounds like somewhere you want to grow, we’d love to hear from you.

The ERP Engineering Team at Shine

We’re a fast‑growing engineering team on a mission to build the best ERP for Small Businesses in Europe. We work in a domain‑based structure, where each domain has real ownership over its area — from architecture to quality and technical roadmap.

Your Role as a Domain Engineer

As a Domain Engineer, you’re the technical reference for the product: you define architecture direction, ensure engineering standards, and work closely with team managers and Senior Engineers to make sure technical decisions serve the business goals. This is a senior IC role, focused on cross‑cutting technical impact, not people management.

We’re modernizing our stack and expanding into new markets, which means real problems around scale, multi‑tenancy, and domain complexity — not greenfield, but not paralyzing legacy either.

What You’ll Do

• Own the target architecture of your domain and the realistic path to get there.
• Ensure reliability, scalability, security, and compliance are design constraints from day one, not afterthoughts.
• Maintain living architecture documentation (C4 model diagrams, ADRs) as part of the engineering workflow.
• Set and calibrate design review thresholds, delegating to senior engineers as their judgment grows.
• Spend roughly half your time embedded with engineering teams, and half on cross‑engineering work — standards, the Golden Path, and the Architecture Forum.
• Grow the architectural judgment of senior engineers, so fewer decisions need to come through you over time.
• Partner with Engineering Directors, Engineering Managers, and Product to surface technical constraints and trade‑offs with clarity.

Job located in Porto with possibility of two remote working days per week.

About You

• Scalable systems experience: You have significant hands‑on experience designing and evolving systems at scale, ideally within multi‑tenant SaaS or platform environments.
• Architectural ownership: You take end‑to‑end ownership of architecture decisions. You ensure your reasoning is well‑documented so others can easily understand the context and trade‑offs later.
• Influence without authority: You are comfortable operating with technical authority and guiding direction without needing formal line‑management authority.
• Cross‑functional communication: You can translate complex technical trade‑offs into clear, legible concepts for Product managers and business leadership.
• Empowerment over centralization: You have a genuine interest in developing other engineers' judgment rather than centralizing decision‑making around yourself.
• Tech stack & domain experience: You are comfortable with .NET, Angular, SQL Server, Azure, and modern CI/CD practices. Experience with financial, accounting, or ERP systems - as well as European regulatory compliance is a strong differentiator.

Equal Opportunity Employer

We follow the principle of equal treatment to consider all job applicants and do not discriminate based on their gender, sexual orientation, color, racial or ethnic origin, religion, disability, etc. as per applicable law.

Our recruitment process

• A 45' first call with Marc (Talent Acquisition Specialist) to get to know you better and share more about Ageras.
• A 90' Technical Interview with one of our Domain Engineers to dive into Architecture and coding topics.
• A 45' Manager interview with Rui (Senior Engineering Manager) to dive deeper into our set up.
• A 60' Practical Assessment with one of our Domain Engineer.