Senior .NET Engineer (f/m/d)

Springtime Technologies; Wien; On-site; EUR 47,000 - 56,000; Full time

Job summary

Springtime Technologies is seeking senior full-stack engineers to grow the Invoicetrack platform, from back-end services to user interfaces. You will design, build, and run what you ship, and mentor others as needed.

The role may include stronger technical leadership responsibilities and a push for quality across the team. You will join a growing global engineering group with teams across multiple countries, focusing on scalable, secure, and maintainable SaaS finance software built on .NET,

Qualifications

• Senior back-end experience with .NET and ASP.NET, including .NET 10 and 4.8 legacy.
• Strong RESTful API design, distributed systems, and data modelling.
• Hands-on React and TypeScript experience, front-end/back-end integration.
• Experience with CI/CD, testing (xUnit/NUnit) and DevOps collaboration.
• Excellent English, ability to lead standards and decisions.

Responsibilities

• Build features end-to-end across .NET services and React front ends.
• Lead back-end architecture and data modelling decisions.
• Set coding standards and review practices to raise quality.
• Collaborate with product, DevOps and QA to deliver value.
• Own deployments with Docker/Kubernetes and monitor production.
• Grow the team and share knowledge, hiring where needed.

Skills

Senior .NET experience

APIs & distributed systems

React & TypeScript

CI/CD & testing

Collaboration & Jira/Confluence

Technical leadership

SaaS experience

English proficiency

Tools

Docker

Kubernetes

Azure services

SQL Server

Elasticsearch

Kafka

Job description

Location: Austria, Germany, UK or Finland Contract type: Full-time, permanent

Who are we?

Redefining accounts payable.

Springtime Technologies helps finance teams turn accounts payable from a manual cost centre into a source of real-time financial intelligence. Invoicetrack puts every invoice on a single platform, uses AI trained on each customer's own invoice history to resolve the exceptions that broke every earlier tool, and shows finance leaders exactly where to act first.

Founded in 2004 by AI pioneers and headquartered in Austria, we are a fast-growing team of finance and technology specialists, with teams in Germany, the UK, Finland and the Philippines. Our technology serves 200,000+ users in 75+ countries, and we measure ourselves by customer outcomes.

The Role.

Full stack. Full ownership.

We are growing our .NET engineering team and are in a serch of senior full-stack engineers. The team builds the Invoicetrack platform, from the back-end services to the interfaces customers work in, in close collaboration with product management.

You are a senior engineer with real ownership. You design, build and run what you ship, and you help shape how the team works. One of these roles carries stronger technical leadership: setting standards, guiding design decisions and raising the quality of the whole team. If that is you, tell us.

What will you do?

Ship software finance teams rely on.

• Build across the stack. Design and deliver features end to end, from .NET 10 services and RESTful APIs to React front ends, and agree clear API contracts with the front-end engineers you build them with.
• Shape the architecture. Lead back-end architecture and data modelling decisions on SQL Server, applying clean architecture and domain-driven design so the platform stays scalable, fast and maintainable.
• Set the quality bar. Establish coding standards and best practices through code review, design discussion and example, and give feedback that helps other engineers improve.
• Work with product. Turn product problems into technical solutions with the product manager, and push back when there is a simpler or better way.
• Run what you build. Work with DevOps on CI/CD pipelines, Docker and Kubernetes deployments and monitoring, and keep improving the performance, security and scalability of services in production for enterprise customers.
• Grow the team. Share knowledge, support other engineers and help hire the people who join after you.

What will you bring?

A senior engineer who makes a difference.

• Senior .NET experience. 5+ years building production back-end systems in C#, ASP.NET and Entity Framework, including .NET 10, with strong fundamentals in performance and a real affinity for good code design, refactoring and testability. You are also comfortable working with legacy systems on .NET Framework 4.8.
• APIs, systems and data. Strong experience designing RESTful APIs and distributed systems, working with Elasticsearch, Kafka, Docker, Kubernetes and various Azure services, and building on relational databases such as SQL Server.
• Full-stack skills. Hands-on experience with React and TypeScript, including state management libraries and integrating front ends with back-end APIs.
• Testing and delivery. Experience with xUnit or NUnit and integration testing, and a working understanding of CI/CD pipelines.
• Collaboration. You work well with engineers, product managers and DevOps, and you make the people around you better. You are at home in Jira and Confluence.
• Ambition and drive. You want to make a difference, take ownership and hold yourself to a high standard.
• Technical leadership. A track record of setting standards or leading technical decisions is a strong plus, and essential for one of the two roles.
• SaaS experience. Experience with SaaS platforms is a plus, though not required. Excellent English, written and spoken.

What will you get?

Work with brands the world knows Our customers include some of the best-known names globally. Your work reaches them.

Flexible working Flexibility in how and where you work, so you can do your best work.

Engineering that matters Your work runs in the AP processes of enterprises worldwide, every day.

At the centre of the AI momentum Springtime is AI native, and you are in a core role in taking it to market: you shape the story, design the approach and launch it.

Our process: a screening call followed by technical interviews with the engineers and engineering leads you would work with. Final round is an onsite interview with the team.

The minimum gross salary for this position is €4,611 per month, as determined by the IT Collective Agreement. The actual salary will be based on your qualifications and experience.

What will you bring

• You build the engine that wins deals.
• Substantial B2B marketing experience. You know enterprise SaaS, ideally in finance operations, automation or applied AI, with domain knowledge in P2P, and have run the full marketing value chain, from positioning to demand generation, brand, website, SEO and GEO, analysts and partnerships.
• Founder and leader. You have built and scaled a Marketing organisation and led a small team of individual contributors, bringing out the best. A high-energy self-starter, you lead from the front.
• Product Marketing depth. You have defined Product Marketing and led positioning hands-on, built battlecards in crowded categories and turned technical differentiation into commercial arguments.
• Executive voice with economic buyers. You speak the language of outcomes with CFOs and GBS leaders, with excellent English skills and enough technical depth to challenge product and simplify it for our market. German is a strong plus.
• Outcomes over process. You build only the process you need and measure success by results, such as win rates and message adoption. You bring analytical rigour to win/loss analysis and market research.
• A trusted voice at the top table. Analysts, Sales, CX, Product and the leadership team see you as a credible partner, and you lead analyst conversations with confidence.
• A builder in a company on the move. You balance strategy with hands‑on delivery, bring quick, tangible results where structure is still forming, and step in to cover adjacent functions that are not yet mature.
• AI savvy. You use AI in your own work, know where it makes a lean function faster and sharper, and can talk about it credibly with buyers and analysts.

What will you get?

Work with brands the world knows Our customers include some of the best-known names globally. Your work reaches them.

Flexible working Flexibility in how and where you work, so you can do your best work.

Engineering that matters Your work runs in the AP processes of enterprises worldwide, every day.

At the centre of the AI momentum Springtime is AI native, and you are in a core role in taking it to market: you shape the story, design the approach and launch it.

Our process: a screening call followed by technical interviews with the engineers and engineering leads you would work with. Final round is an onsite interview with the team.

The minimum gross salary for this position is €4,611 per month, as determined by the IT Collective Agreement. The actual salary will be based on your qualifications and experience.