At HappySignals, we’re redefining IT Experience Management through data-driven insights, empowering organizations to improve their IT services with a human-centric approach. As a Senior Back-End Engineer, you’ll play a pivotal role in our mission, driving the reliability and depth of our data-driven platform.

HappySignals is a fast-growing B2B SaaS company with clients like Campari, PepsiCo, and Fujitsu across 14+ countries, dedicated to empowering enterprises through impactful IT solutions.

About the role

Data is at the heart of everything we do, and in this role, you’ll be at the center of it all. At one end you will be working with the integrations team to ensure smooth and reliable data collection. On the other you will work with the front-end team and use the broad landscape of off the shelf ML/AI products and to bring insights from the data to the customer. Throughout, your expertise in the data model and its capabilities will be essential in helping product design to make the right decisions when designing new features.

In this role you’ll dive into

  • Developing our evolving data model, ensuring it supports efficient real-time collection, querying and processing.
  • Shaping and designing our infrastructure- and application architecture in close cooperation with other engineers.
  • Assessing and adapting off-the-shelf AI and ML components to fulfil product requirements.
  • Developing, maintaining, and documenting our endpoints for data ingestion and insight extraction used internally and by customers.
  • Supporting product design with expertise especially when developing data-related features.
  • Maintaining Security Development Lifecycle & Data Security standards in your work and the team as a whole.
  • Ensuring code quality and maintainability, according to best practices and participating in the development of the same.
  • Actively participating in technology decisions affecting the platform.
  • Supporting other developers with guidance and design for their own endpoints and data.
  • Taking part in our on-call rotation with responsibility for our Azure based infrastructure and platform availability.

What you’ll bring to the team

  • Over 3 years of hands-on experience with relational databases, SQL, and designing complex, high-performance data models.
  • Solid understanding of HTTP and experience designing, building, and documenting RESTful APIs in a secure manner.
  • Significant professional experience working with modern server-side programming languages and frameworks such as Python (Django).
  • Strong organisational skills with the ability to independently tackle complex problems, breaking them down into actionable steps.
  • Strong English skills to communicate effectively across technical and non-technical areas.

Complementary Expertise

  • AI Proficiency: Familiarity with AI products and frameworks is highly regarded.
  • Personal Data Expertise: Knowledge of handling personal data, including anonymization and masking, and a strong grasp of related legal considerations.
  • Cloud Infrastructure Experience: Practical experience in operating and maintaining cloud-based infrastructure.
  • Experience with multi-tenant SaaS application development: Experience working on an application shared by multiple customers with strong data separation.
  • IT/Enterprise service management: An understanding of the IT or enterprise service management world and related processes.

Why join us

  • Collaborative Environment: Work closely with cross-functional teams where your input is valued and your ideas can shape our product's future.
  • Growth: opportunities for professional development and career growth.
  • Culture: work in a collaborative, supportive environment that values innovation and creativity.
  • Flexibility: enjoy a role that offers occasional travel and a chance to work with diverse teams.

What we offer

HappySignals is a company where culture matters. We offer training, coaching, and great opportunities for you to grow and develop your skills and experience with an innovative IT product. We value and encourage work-life balance. With us you get a competitive package of benefits including for example:

  • Generous holidays: enjoy ample time off to relax and recharge
  • Flexible working hours: customize your schedule to fit your lifestyle
  • Comprehensive healthcare: benefit from extensive occupational healthcare and insurance including dental coverage
  • Mental wellbeing support: access resources and support to keep you feeling your best


The heart and happiness of our company is our people! We have a supportive team that encourages and respects each other and enjoys the occasional social get-togethers both in person and online. For our employees, we want HappySignals to be the greatest place to work. Learn more from www.happysignals.com/careers. We are a growth company – we try, we fail, and succeed together. It is important that you embrace a transparent way of working and are used to sharing your work and asking if you need help. For our growth journey to be a success, we need willing and determined people to commit and put their heart and skills into the growth story of HappySignals.

Ready to make a difference?

If data and coding excites you and you’re inspired by working with AI/ML tools in a collaborative, global setting with a team that values strategic thinking, we’d love to see your application by 10.12.2024 . For questions about the role, please reach out to Memmu Mazengo at +358505954702, available on 14.11-15.11 12-14 and 21.11 14-16.

This is a full-time role based in Helsinki Finland (Hybrid). Please note that you need to have an existing work permit to work in Finland.

About HappySignals

HappySignals is the leading SaaS company for IT Experience Management, empowering enterprises to change their culture to be more open, outcome-focused, and data-driven. The HappySignals Platform enables IT leaders to get a real-time understanding of the experiences they are delivering to end-users, and make informed decisions that increase employee happiness and productivity. HappySignals discovers the experiences of millions of employees in 130 countries. Our customers have been able to make employees happier and increase productivity by 26%. Established in 2014, HappySignals is based in Helsinki, Finland, and also has operations in the UK and US. Currently, we are a Happy team of 40+ people with 10 different nationalities. We work together on a mission towards more smiles, less time wasted. For more information, visit www.happysignals.com. HappySignals is an equal opportunity employer. We celebrate diversity in our workplace, and all qualified applicants will be considered without regard to age, sex, sexual orientation, nationality, language, religion, beliefs, health, disability, or any other circumstance connected to the person.