Senior Software Engineer (Backend)

Motion (Creative Analytics); France; Hybride; EUR 90 000 - 140 000; Plein temps

Avantages offerts par ce poste

Equity

Health benefits

Work-from-home stipend

Paid time off

Hybrid office access

Résumé du poste

Motion, a remote-first startup, seeks a Senior Software Engineer to lead full-stack development with a backend focus. You will design, implement, and maintain robust APIs and services, collaborating across teams to deliver scalable backend features and integrations.

You will work with React, Node.js, TypeScript, GraphQL, PostgreSQL, MongoDB, and Azure, shaping AI-powered workflows and data architectures while shipping high-quality software used by top brands.

Qualifications

• 6+ years of experience building and maintaining large-scale software applications.
• Proficiency with core stack (React, Node.js, TypeScript) or similar tech.
• Interest in applying AI to software development and workflows.
• Experience with asynchronous messaging systems.
• Experience with document databases (MongoDB) and data modeling/ETL concepts.

Responsabilités

• Scoping, designing, and implementing resilient, performant backend solutions.
• Collaborating with engineers to deliver complex backend features and integrations.
• Maintaining and enhancing existing integrations to scale with Motion's growth.
• Identifying and resolving errors, performance issues, and tooling problems in the codebase.
• Driving engineering advancements and contributing to architecture decisions.

Connaissances

React

Node.js

TypeScript

Express

GraphQL

PostgreSQL

MongoDB

Azure

Outils

API design

Description du poste

About Motion

Motion is building the command center for creative strategists: an AI-native platform that bridges the gap between performance marketers and creative teams, so they can uncover what’s working, what’s not, and ship more winning ads across platforms like YouTube, LinkedIn, Meta, and TikTok.

We're at the forefront of AI as the foundation of our product. Motion now automatically analyzes and organizes creative at scale and surfaces competitor trends. And with Runneth - the AI brain for the 100x marketer - we're going further: a persistent creative strategy agent that lives where your team already works (Slack, Notion, Google Drive, your ad data) and turns a marketer's knowledge and instincts into cross-channel playbooks, automated workflows, and a system that gets smarter over time.

Our bet isn't that AI replaces great marketers. It's that the best marketers will use AI to operate at a scale that wasn't previously possible.

Today, Motion is trusted by some of the world’s top e-commerce and direct-to-consumer brands and agencies (including Vuori, True Classic, The Farmer’s Dog, and HexClad) and has analyzed over $14B in media spend.

When leading brands want to understand their creative performance, they turn to us.

Our founders have built successful companies before, including alongside several of the people now at Motion. A number of teammates chose to build again here — a reflection of the trust, culture, and conviction behind what we’re building.

The people building Motion are deeply embedded in where AI and our industry is heading, and obsessed with closing the gap between what's possible and what's actually shipping in product. We're a 75 person remote team backed by $65M+ in funding with a valuation that’s nearly 3x’d in under two years. If you want to work on a hard problem, with people who've done it before, and a product that customers genuinely love - we'd love to connect!

About The Senior Software Engineer Role

As a Senior Software Engineer, you'll do full-stack development with a focus on backend: anything from building features to designing, implementing, and maintaining robust, high-quality APIs and services.

Our tech stack

React, Node.js with Express, TypeScript, GraphQL, PostgreSQL, MongoDB, and Azure.

Resources

• See an overview of the role from our lead backend engineer, Armin Karimi.


• Explore our Engineering at Motion page to learn more about our team, our work, and how we build together.


• Browse our Engineering Blog for an inside look at the decisions our team is making, the things we're learning, and what it means for us to be building an AI product today.

What You'd Be Doing

• Scoping, designing, and implementing resilient, performant, and high-quality backend solutions.


• Working closely with fellow engineers to deliver complex backend features and integrations.


• Maintaining and enhancing existing integrations, anticipating future product solutions and making sure our systems scale with Motion’s growth.


• Identifying and resolving errors, performance issues, and devex problems in our codebase.


• Driving engineering advancements.

Sample Projects

• Work across the stack to improve how customers understand and act on their creative performance.


• Build a unified API for our insights data to be used by other development teams.


• Store insights and metrics from our data providers at scale.

Our ideal fit brings

• 6+ years of experience building and maintaining large-scale software applications.


• Proficiency with our core stack (React, Node.js, TypeScript) is ideal, BUT if you’ve worked with similar tech, we’d still love to chat.


• Excitement about using AI as part of your workflow and keeping up with how fast it’s changing how we build software.


• Strong experience with asynchronous message queue systems.


• Experience with MongoDB or other document-based databases.


• Solid understanding of data modeling, ETL concepts, and simplifying data architecture.


• Exceptional written and verbal communication skills with a knack for translating complex technical issues into clear business impacts.


• Any background: self-taught, bootcamp, degree, founder. We love talent from everywhere!


• and you'll be a strong fit if you align with these qualities:


• A strong sense of ownership: you make decisions, stand behind them, and fix things quickly when they’re wrong.


• A pragmatic mindset. You optimize for impact over perfection, care more about shipping real customer value than polishing every edge, and improve things over time.


• Comfort thriving in a fast-moving startup where requirements are ambiguous, shift quickly, and clarity isn’t handed to you, you create it.


• You enjoy being a strong individual contributor and a supportive teammate. Engineering is a team sport here!

What You'll Love About Motion

• Competitive compensation package: We offer competitive compensation, including equity for all employees, health benefits from day one, a monthly health & lifestyle stipend to support your well-being, 20 days of PTO, and a $1,500 work-from-home stipend.


• Remote-first with hybrid flexibility: We're a remote-first company with team members spanning Canada, the U.S., and beyond, but also have office spaces in 4 main hubs (Toronto, Montreal, Vancouver, and Porto) for optional hybrid work.


• Growth that speaks for itself: Motion has strong product-market fit, 2.5x YoY growth, second-time founders with deep industry knowledge, and $30M in Series B funding to fuel our momentum.


• Opportunity for impact: As an early team member, your contributions will directly shape the product, team, and the future of the company. If you're excited about building, you’ll thrive here!


• Award-winning team: We're a low-ego, high-performing team that was just ranked #19 on G2's list of Best Canadian Software Companies for 2026.


• Team connection:




• Virtual: Day-to-day, we use Roam, an AI-powered virtual office platform that fosters spontaneous collaboration, drop into meetings or quick chats, and interact with colleagues for a simulated, live digital headquarters.


• In-person: Outside of the option to go to one of our offices, our team gets together in-person for a week every two months, and we have a company retreat every summer.

We closed out 2024 with a $30M Series B raise and strong signals from our customers. In 2025, we built the foundational capabilities our customers rely on, setting the stage for what's to come. In 2026, with fresh funding ($65M+ total capital raised), we’re building forward from that foundation, taking what we learned to market in a deeply AI-native way.

A note on location

We're looking to hire someone based in Canada, the United States, or Europe but are open to exceptional candidates in other locations. If this position excites you and you believe you'd be a strong fit.

Motion uses artificial intelligence (AI) to support administrative and efficiency-focused aspects of our recruitment process. All interviews and hiring decisions are made by (human) members of the Motion team.