Senior Software Engineer - Reporting Platform

Smartly; Helsinki; Hybrid; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Healthcare packages

Mental health services

Paid holidays

Family leave

Equity options

Hybrid workplace

Job summary

Smartly is seeking a Senior Software Engineer to join the Reporting Platform team. You will design and implement the core insights engine, ingesting vast data and delivering reliable, real-time reporting for global brands.

You will own backend design and optimizations, work across Ruby, TypeScript, Kafka, ClickHouse and PostgreSQL/Citus, and mentor teammates to raise engineering standards.

Qualifications

• Experience building large-scale backend systems with reliability and performance in focus.
• Strong knowledge of relational databases and analytical workloads.
• Experience with or interest in distributed processing and event-driven architectures.
• Ability to craft clean interfaces, testing, and maintainable abstractions.
• Hands-on ownership from design to production and mentoring peers.

Responsibilities

• Design and build the reporting engine for flexible analytical views over advertising data.
• Address performance, reliability, and large-scale analytical workloads in backend systems.
• Create interfaces to integrate new advertising channels into the platform.
• Own architectural decisions and drive production deployment across the stack (Ruby, TS, Kafka, ClickHouse, PostgreSQL/Citus).
• Improve architecture and engineering practices for maintainability and resilience.
• Mentor engineers, contribute to technical direction, and raise the team's engineering bar.

Skills

Distributed systems design

Backend development

High availability systems

Performance optimization

Mentoring engineers

Tools

Ruby

TypeScript

Kafka

ClickHouse

PostgreSQL/Citus

Job description

Senior Software Engineer - Reporting Platform

This role sits at the core of Smartly’s data platform, where we build the systems that power performance reporting for some of the world’s largest and most influential brands.

You will join the Bobby Tables team, building the software behind Smartly’s performance analytics. Our systems ingest, process, and serve tens of billions of data points from advertising platforms worldwide, turning fragmented, high-volume data into a fast, reliable, and flexible reporting experience.

As a Senior Software Engineer, you will tackle challenging distributed systems problems at scale. You will design and build backend services, improve the performance and reliability of critical systems, and develop robust integrations with a constantly changing ecosystem of advertising platforms. You will make architectural decisions, tackle complex technical trade-offs, and help ensure our systems remain maintainable as both their scale and capabilities grow.

You will have significant technical ownership and influence over how these systems evolve. Your work will directly shape the platform that global brands use to understand their advertising performance and make decisions in real time.

What You Will Do

• Design and build the reporting engine that enables users to create flexible analytical views across their advertising data
• Solve complex backend engineering challenges around performance, reliability, and large-scale analytical workloads
• Design clean interfaces and abstractions that make it easy to integrate new advertising channels into a cohesive platform
• Own technical decisions and drive software from design through production across our backend stack, including Ruby, TypeScript, Kafka, ClickHouse, and PostgreSQL/Citus
• Improve the architecture and engineering practices that keep our systems maintainable and resilient as they grow in scale and complexity
• Mentor other engineers, contribute to technical direction, and help raise the engineering bar across the team

What We Are Looking For

• Experience with complex backend systems: You have built and operated large-scale, highly available software systems and are comfortable reasoning about performance, reliability, and distributed systems
• Strong database fundamentals: You understand relational databases and query performance, and ideally have experience with analytical or OLAP workloads. Experience with PostgreSQL, ClickHouse, or similar technologies is a plus
• Distributed and asynchronous processing: You have experience designing systems that handle concurrent background workloads, asynchronous processing, or event-driven architectures using technologies such as Kafka
• Strong software design skills: You care deeply about abstractions, interfaces, testing, and maintainability, and know how to keep complex systems understandable as they evolve
• Technical ownership: You are hands‑on and comfortable taking ambiguous, technically challenging problems from exploration and design through to production
• Collaborative leadership: You communicate clearly, work effectively across engineering teams, and help other engineers grow through mentoring, design discussions, and thoughtful technical feedback
• Bonus: Experience with or interest in query generation, abstract syntax trees (ASTs), compiler concepts, or domain‑specific languages (DSLs) is a plus

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.

Smartly is committed to being a great place for growth‑minded individuals to thrive.

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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.