Are you an enthusiastic Software Engineer who’s ready to embark on new challenges and take your career to new heights? Join our team at Enigma in Helsinki as a Software Engineer, and play a pivotal role in building our robust and efficient Billing Engine for our leading SaaS platform!

About the Team:

As part of the Infrastructure Group at Smartly.io, Enigma is dedicated to managing Identity and Access Management (IAM) and Billing operations. We tackle complex challenges to ensure secure authentication, flexible authorization, and an efficient Billing Engine for our leading SaaS platform.

We develop and maintain several microservices built mainly using Ruby/Ruby on Rails, TypeScript, NodeJS, Koa, Postgres, RabbitMQ/Kafka, and SideKiq and run in our Kubernetes clusters.

Check out our Engineering at Smartly site to learn how our engineering and product development work.

As a Software Engineer, You Will:

  • Write maintainable, robust, high-quality code primarily using Ruby and Ruby & Rails.
  • Develop and maintain APIs for consumption by other backend services or frontend code.
  • Participate in designing and implementing new services while enhancing the existing codebase.
  • Collaborate with diverse stakeholders, including product management, infrastructure, and support functions.

What We’re Looking For:

  • 3+ years of professional working experience with Ruby, with experience in NodeJS/TypeScript/React being an advantage.
  • Strong backend development skills with a solid understanding of frontend technologies.
  • Bonus points for knowledge of the finance and billing domain.
  • Excellent written and verbal communication skills in English.
  • Proactive attitude and a passion for taking initiative.
  • Ability and willingness to work from our Helsinki office for three days a week.

What We Offer You:

  • Inclusive Culture: Join a team of over 800 Smartlies representing more than 60 nationalities across 24 locations in 13 countries, we foster a culture built on trust, transparency, and open feedback.
  • Global Impact: Be part of a company making a global impact, directly influencing our customers and business growth.
  • Wellbeing Focus: Enjoy generous healthcare packages, mental health services, and a healthy work-life balance with paid holidays and family leave.
  • Total Rewards: Benefit from equity options, performance-based rewards, competitive compensation, and ample career development opportunities.
  • Hybrid Workplace: Experience a hybrid work model, balancing office and remote work, with the option to work abroad for up to 30 days.

Smartly is committed to being the best place to work for growth-minded individuals to thrive - explore more in our Culture Handbook!

What to Expect from Our Recruitment Experience:

  • Meet your Recruiter: Get to know each other and learn about working at Smartly
  • Meet the Team Lead: Gain deeper insights into your future team.
  • Meet the Team in Technical Interviews: Engage in interactive coding and Systems Design discussions with the team.
  • Meet the Leadership in a Final Meeting: A brief discussion with our Engineering Director.

Apply Now and Shape Your Future with Smartly.io!

#LI-JL #LI-hybrid

Meet Smartly

Smartly is the AI-powered advertising technology company transforming ad experiences for brands and their consumers. Our comprehensive advertising platform seamlessly integrates the capabilities of media, creative, and intelligence to power more than 800 billion impressions and generate more than 300 billion creatives annually, delivering tangible business outcomes for brands and advertisers. We are the only company managing creative and media for 700+ brands worldwide and $5B in ad spend across the largest media platforms, including Facebook, Google, Instagram, Pinterest, Snap, and TikTok. Our end-to-end technology, unmatched access to media platforms and exceptional customer service help Fortune 500 brands to reach and engage consumers and learn what performs best.

Smartly is a multinational and diverse team of 650+ Smartlies from 60+ nationalities, working in 13 countries. Together, we want to create and maintain an inclusive environment where everyone feels respected and heard. Our Diversity, Equity & Inclusion approach is at the heart of it.

Visit Smartly.io to learn more.

Apply for this Job

* Required
resume chosen  
(File types: pdf, doc, docx, txt, rtf)
cover_letter chosen  
(File types: pdf, doc, docx, txt, rtf)


Demographic Survey for Smartly.io

We invite you to complete this optional survey to help us evaluate our diversity and inclusion efforts. Submission of the information is strictly voluntary and refusal to provide it will not subject you to any adverse treatment or affect your job application. Information obtained will be kept separate from your name and job application. This information will be kept secure and confidential and will be used solely to evaluate our diversity and inclusion efforts.

What gender do you identify as? (Select one) *








I identify my ethnicity as (Select one) *










Veteran Status (Select one) *



Are you a person with a disability? (Select one) *



What is your age range? (Select one) *









Enter the verification code sent to to confirm you are not a robot, then submit your application.

This application was flagged as potential bot traffic. To resubmit your application, turn off any VPNs, clear the browser's cache and cookies, or try another browser. If you still can't submit it, contact our support team through the help center.