We’re looking for a Senior Software Engineer to help build and shape Smartly’s new ChatGPT Ads offering, bringing our advertising technology to an exciting and emerging platform. This is a unique opportunity to join the team at an early stage and play a key role in building a new channel experience from the ground up, enabling some of the world’s largest advertisers to explore new ways of reaching and engaging audiences.
Working closely with ChatGPT Ads and cross-functional teams at Smartly, you’ll help establish the technical foundations, develop new product capabilities, and solve complex engineering challenges as we expand our multi-channel advertising platform into this new space. With the project still in its early stages, you’ll have significant influence over the architecture, technical direction, and product decisions that shape the offering.
This is a backend-heavy role focused on building reliable, high-performance services and APIs, with opportunities to contribute across the full stack and explore how AI and automation can improve our products and engineering practices.
Our tech stack
- Backend: Node.js, TypeScript
- Frontend: React, TypeScript
- Infrastructure: PostgreSQL, Redis, Kubernetes
- Architecture: Distributed systems, event-driven services, large-scale data processing
- Play a key role in building Smartly’s OpenAI offering from the ground up, shaping its technical foundations and evolving it into a scalable product.
- Own significant product capabilities end-to-end, from early concepts and customer-facing experiences to the backend services and APIs that power them.
- Contribute across the full stack, building customer-facing functionality and backend services using Node.js, TypeScript, and React.
- Drive technical and architectural decisions, helping define the right solutions, patterns, and foundations for a new product area.
- Design, develop, and operate reliable, high-performance distributed systems that can scale with growing customer needs.
- Build and evolve integrations between Smartly and OpenAI, navigating evolving APIs, platform capabilities, asynchronous operations, and technical constraints.
- Develop and optimize data-intensive services using PostgreSQL and Redis, running on Kubernetes.
- Work closely with OpenAI and partner teams at Smartly to understand platform capabilities, identify opportunities, and translate them into valuable product experiences.
- Partner with product, design, and other engineering teams to explore ideas, understand customer needs, and turn ambiguous requirements into practical solutions.
- Explore opportunities to leverage AI and automation to improve both our products and engineering workflows.
- Help establish engineering best practices for this new area, while mentoring fellow engineers and sharing knowledge across the organization.
- 6+ years of experience developing and operating production applications, ideally using TypeScript, Node.js, and React or similar technologies.
- Experience delivering complex product capabilities end-to-end, from frontend development to backend architecture and API design.
- Experience designing distributed systems and working with asynchronous, event-driven architectures at scale.
- Experience building reliable systems and third-party API integrations that handle complex data flows and high volumes of data.
- Ability to navigate ambiguity and take ownership of complex technical challenges, turning early ideas into well-designed solutions and taking them from concept to production.
- Interest and motivation to build something new, influence technical direction, and establish solid engineering foundations in an evolving product area.
- Strong collaboration skills, with experience working closely with engineering, product, and design teams to shape solutions.
- A pragmatic engineering mindset, making thoughtful trade-offs between product needs, technical quality, scalability, and delivery speed.
- Interest in mentoring other engineers, sharing knowledge, and contributing to strong engineering practices.
- Ability and willingness to work in a hybrid setup from our Helsinki office, 3 days per week.
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.
#LI-HYBRID
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.
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Skills Required
- 6+ years of experience developing and operating production applications
- Experience with TypeScript, Node.js, and React or similar technologies
- Experience delivering complex product capabilities end-to-end, including frontend development, backend architecture, and API design
- Experience designing distributed systems and asynchronous, event-driven architectures at scale
- Experience building reliable systems and third-party API integrations handling complex, high-volume data flows
- Ability to navigate ambiguity and own complex technical challenges from concept through production
- Strong collaboration skills with engineering, product, and design teams
- Pragmatic engineering mindset balancing product needs, technical quality, scalability, and delivery speed
- Interest in mentoring engineers and sharing technical knowledge
- Ability and willingness to work hybrid from the Helsinki office three days per week
What the Team is Saying
Smartly Compensation & Benefits Highlights
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Leave & Time Off Breadth — Five weeks of paid vacation, 11 paid holidays, and unlimited sick days are described for U.S. roles, with leave highlighted as a standout element. Feedback suggests the policy is a strong headline benefit where it applies.
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Healthcare Strength — Medical, dental, vision, and mental-health support are included in published benefits, with health coverage characterized as a strong component. Life and disability insurance are also noted.
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Retirement Support — A 401(k) with employer matching is part of the U.S. package. This retirement support is positioned as a meaningful addition to total compensation.
Smartly Insights
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.
