Why This Job is Featured on The SaaS Jobs
This Backend Tech Lead role stands out in SaaS because it sits at the core of a specialised B2B platform for FP&A, where product value depends heavily on dependable data flows, APIs, and backend correctness. The remit signals a company investing in technical direction as the platform scales, with architecture choices that need to hold up over multi year horizons rather than short term feature cycles.
For a SaaS engineering career, the role offers sustained exposure to the problems that recur across modern subscription products: evolving service boundaries, keeping reliability and maintainability high while shipping, and building backend foundations that support product and data teams. The emphasis on standards, design review, and cross functional collaboration maps closely to how SaaS organisations institutionalise engineering quality as complexity increases.
The position is best suited to an experienced backend engineer who prefers leading through technical influence and hands on delivery, rather than formal people management. It will fit someone who enjoys being the reference point for backend decisions, is comfortable challenging proposals constructively, and wants to stay close to code while shaping how a SaaS platform is built and operated over time.
The section above is editorial commentary from The SaaS Jobs, provided to help SaaS professionals understand the role in a broader industry context.
Job Description
Your mission
We are looking for a hands-on Backend Tech Lead to drive the technical direction of our FP&A platform and lead a team of highly skilled Python engineers.
You will shape and evolve our architecture as we scale, ensuring our systems remain reliable, maintainable, and scalable. You combine strong architectural thinking with the ability to dive deep into code.
This role focuses primarily on technical leadership rather than people management. You define standards, guide architectural decisions and ensure that what we build today still makes sense in 3 years.
Your responsibilities
Lead technical decision-making and drive architectural alignment across the team.
Ensure scalability, reliability, and maintainability of our code.
Act as the technical reference point for backend-related topics.
Review and challenge design proposals to maintain high engineering standards.
Stay hands-on working on new features.
Enforce that the team follows the defined engineering processes and best practices.
Collaborate closely with Product, Data, and Frontend in feature refinements to ensure coherent system design.
Support backend engineers in solving complex technical challenges.
Identify technical risks early and define mitigation strategies.
Your skills
Core skills
Deep and extensive experience with Python (FastAPI) in production environments.
Proven experience as a Tech Lead.
Strong understanding of scalable system design and distributed systems.
Experience designing and evolving microservices or modular architectures.
Strong knowledge of SQL data storage systems.
Experience with CI/CD pipelines.
Strong understanding of clean architecture principles and domain-driven design.
Experience working with APIs (REST, GraphQL).
Experience with containerization (Docker).
Excellent code review and mentoring skills.
Ability to balance technical excellence with pragmatic delivery.
Nice to have
Solid experience with AWS (ECS, Lambda, Step Functions, S3, RDS, etc.).
Experience in fintech, financial reporting, analytics platforms or OLAP systems.
Experience with event-driven systems and message queues (e.g. RabbitMQ, Kafka).
Experience with infrastructure-as-code (e.g. Terraform).
Experience with large-scale data processing systems.
Experience working in high-growth startup environments.
You can expect:
High ownership over the technical direction of the backend platform.
A highly motivated and international team of strong engineers.
Real architectural challenges in a growing B2B SaaS environment.
Flexible working hours.
A workplace in the heart of Vienna or remote options with quarterly office weeks in Vienna Helu.io.
Why us?
Location: Vienna, (remote option available with quarterly office visits for one week in Vienna)
About us: We were recently rewarded for being the most interesting Austrian scale-up. We raised €15m overall and offer a fun, friendly, young, dynamic team, a great, interesting, and challenging product, and the opportunity to work with the newest technologies.
Our values: Healthy team spirit, a growth-oriented environment, and a culture of performance. We stand for trust, respect, a welcoming atmosphere, fairness, an active feedback culture, room for failure, collaboration and a strong sense of team appreciation.
Helu empowers business leaders to make the right strategic decisions in Financial Management and Planning.
Our mission is to help companies plan, forecast and analyze all their data in one place.
Our headquarters are based in Vienna, Austria. We’re a team of experienced, international professionals who are looking for talented and ambitious people open to build an exciting global company with us.
Helu is founded by a successful serial entrepreneur and backed by numerous unicorn founders and renowned investors ( Wefox, Atlantic Labs, Commerzventures)
About us
Helu is the leading FP&A software on DATEV.
As successful Austrian scale-up tech company that raised $10m Series A recently, we help business leaders plan forecast and analyze their performance with any data. We are an experienced team with strong values and look for well-rounded people who think long term and love new technologies.
Every three months, the Helu team meets for an office week in Vienna, where we work on our company culture, our values, and a healthy team spirit. Colleagues work together, get to know each other better, explore Vienna, do sport activities, party and have fun.
The company is founded by a successful serial-entrepreneur and backed by numerous unicorn founders and renowned investors (Bitpanda, Wefox, Atlantic Labs).
