Software Engineer, Large-Scale Data Systems

Posted Yesterday
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Helsinki, FIN
Hybrid
Mid level
AdTech • Artificial Intelligence • Digital Media • Marketing Tech • Social Media • Software • Generative AI
Smartly is an AI-powered adtech company, enhancing marketer productivity and unifying the platform world.
The Role
Design, build, and operate large-scale data storage and processing systems handling billions of records daily. Collaborate across engineering, product, and business teams to define architecture, SLAs, SRE practices, and APIs for internal and external data consumers, enabling reliable cross-channel product data sync and analytics.
Summary Generated by Built In

We are looking for a Software Engineer to join team Aqueduct, a team building our data platform for powering large-scale cross-platform advertising. Our ideal candidate is a professional who has experience in the domain of data engineering, and knows how to design, implement and maintain data storages and pipelines using industry standard tools.

For our customers, ensuring their data is available and composable can:

  • unlock the potential of creative automation with image and video templates
  • power agentic workflows that utilise the data
  • allow analysis of the relationship between product data and ad performance.

Being able to sync our customers’ product data across multiple advertising channels consistently and with minimal delays ensures that:

  • the ads consumers see have the latest information
  • products that are out of stock are not advertised
  • regulatory requirements are met

The team currently has a backend written in Ruby on Rails, and we own small parts of the frontend written in TypeScript and React. We’re moving our data systems from Ruby to a language and architecture better suited for the workload and capable of scaling with our growth. We're looking for an experienced engineer to join the team and contribute to the build and design of this new platform using the right tools for the job.

What You Will Do
  • Build a large scale data storage and processing system that needs to process billions of records per day
  • Contribute to the architecture and engineering excellence inside the team by collaborating with other engineers
  • Collaborate with stakeholders from across the organization: engineering, product and business
  • Participate in defining and monitoring SLAs, and follow SRE best practices to ensure the stability and availability of the system
  • Build APIs for internal and external consumers of the data
  • Affect the ROI for billions of dollars in ad spend
What We Are Looking For
  • 3-5 years of industry experience
  • Strong programming skills (e.g., Python, Scala and/or Java)
  • Some experience with data processing frameworks (e.g., Spark, Flink, Databricks, Snowflake, BigQuery, Redshift, ClickHouse)
  • Familiarity with streaming systems (e.g Kafka, Kinesis)
  • Experience with SQL and some RDBMS (PostgreSQL, Citus, etc.)
  • Experience contributing to large-scale data systems
  • Experience with Ruby on Rails is considered a plus
  • Ability to work in a hybrid capacity from our Helsinki office 3 days a week
What We Offer You

At Smartly, we offer a place where you can advance your career. Here, you'll find:

An Inclusive Global Culture: Join a team of over 750 Smartlies, representing more than 60 nationalities across 24 locations in 13 countries. We cultivate a culture built on trust, transparency, and open feedback, where diverse perspectives are valued and encouraged.

Global Impact: Contribute to a company making a global impact, directly influencing our customers' success and business growth.

Focus on Wellbeing: We prioritize your health with healthcare packages, mental health services, and a commitment to work-life balance through paid holidays and family leave.

Comprehensive Rewards: Benefit from equity options, performance-based rewards, competitive compensation, and career development opportunities.

Flexible Hybrid Workplace: Experience a hybrid work model, balancing office collaboration with remote work, and the option to work abroad for up to 30 days annually.

Apply Now and Build Your Future with Smartly!

Curious what it’s like to work at Smartly? Visit our Careers page to see how we grow, collaborate, and make impact together.

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About 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.

Smartly is the only company in the industry recognized as a Leader in The Forrester Wave: Creative Advertising Technologies with PwC validating the results it delivers for brands. We manage creative and media for 700+ brands worldwide and $6B 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 750+ 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 to learn more.
The processing of your information is described in our Candidate Privacy Notice.

Skills Required

  • 3-5 years of industry experience
  • Strong programming skills (Python, Scala and/or Java)
  • Experience with data processing frameworks (Spark, Flink, Databricks, Snowflake, BigQuery, Redshift, ClickHouse)
  • Familiarity with streaming systems (Kafka, Kinesis)
  • Experience with SQL and RDBMS (PostgreSQL, Citus, etc.)
  • Experience contributing to large-scale data systems
  • Experience with SRE best practices and defining/monitoring SLAs
  • Experience building APIs for internal and external consumers
  • Experience with Ruby on Rails
  • Ability to work hybrid from Helsinki office 3 days a week

What the Team is Saying

Madeline
Malachy
Kristo

Smartly Compensation & Benefits Highlights

  • Leave & Time Off Breadth Five weeks of paid vacation, company holidays, wellness/recharge days, and an annual holiday shutdown are repeatedly highlighted, with sabbatical or study leave noted in some locations. This broad time-off structure compares favorably against many tech employers.
  • Healthcare Strength Medical, dental, and vision coverage are paired with mental-health support, FSA options, and inclusive elements such as transgender-inclusive coverage and pet insurance, alongside life and disability insurance. The scope indicates robust core health protection.
  • Flexible Benefits Office, hybrid, or fully remote arrangements (in approved locations) are offered, complemented by a home-office stipend and short-term 'work from anywhere' programs. These options provide meaningful flexibility in where and how work is done.

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The Company
HQ: Helsinki
805 Employees
Year Founded: 2013

What We Do

We solve for advertising campaign and creative complexities - both key elements to the time/money savings and performance that brands, agencies and businesses seek. Our unified platform combines media, creative, and intelligence, offering end-to-end workflows powered by AI across the open and closed web. With over 700 brands and advertisers, we've proven that dynamic and personalized creative makes advertising impactful. We are on a mission to transform the advertising experience for brands and their consumers. ⚡️

Why Work With Us

As a fast-paced growth company, we offer opportunities to maximize learning and amplify impact. Our culture and values have always been the secret sauce of our growth. They define how we aspire to build our adtech product, whom we hire and reward, and how we work towards a shared vision. Join us in moving advertising forward.

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Smartly Offices

Hybrid Workspace

Employees engage in a combination of remote and on-site work.

We are a hybrid workplace where Smartlies have the flexibility of hybrid work combining office and work from home. We also offer programs for short-term remote work globally.

Typical time on-site: 3 days a week
HQHelsinki, FI
MX
Berlin, DE
Chicago, IL
Dubai
London, GB
Los Angeles, CA
New York, NY
San Francisco, CA
Singapore
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