Senior Backend Developer, Campaigns Team

Doist; Toronto; On-site; CAD 197,461 - 253,879; Full time

Job summary

Movable Ink is seeking a Senior Software Engineer to join the Campaigns team. You will design and build core systems powering multi-channel campaigns, ensure reliability, and own end-to-end delivery from design through production support.

You will work with Python, Ruby, PostgreSQL and modern distributed technologies, mentor juniors, and contribute to scalable, observable platforms that marketers rely on daily.

Qualifications

• 5+ years of software engineering experience.

Responsibilities

• Design and Build Campaign Workflows across multiple channels.
• Own Campaign Authoring & Content Assembly end-to-end.
• Ensure Reliable Handoff to Delivery with monitoring and alerts.
• Enable Audience Targeting & Personalization integration.
• Build for Extensibility for new campaign types and channels.
• Drive Operational Excellence with observability and on-call ownership.
• Own Feature Delivery End‑to‑End from design to production support.
• Champion engineering best practices and mentor juniors.

Skills

Software engineering

Distributed systems

Backend development

Python

Ruby

PostgreSQL

APIs REST/GraphQL

gRPC

AWS/Azure/GCP

Kubernetes

Kafka

RabbitMQ

Docker

CI/CD

Code reviews

Mentoring

Tools

Docker

Kubernetes

GitHub Actions

CI/CD

PostgreSQL

RabbitMQ

Kafka

Job description

Movable Ink scales content personalization for marketers through data-activated content generation and AI decisioning. The world’s most innovative brands rely on Movable Ink to maximize revenue, simplify workflow and boost marketing agility.

Headquartered in New York City with close to 600 employees, Movable Ink serves its global client base with operations throughout North America, Central America, Europe, Australia, and Japan.

We’re looking for a Senior Software Engineer to join the Campaigns team, which builds the infrastructure that lets marketers create, schedule, and deliver messages across multiple channels on our platform. Join us to make your mark on a fast-growing team, take ownership of innovative projects, and work closely with cross-functional partners to build a product that marketing teams rely on daily. This is a hands‑on role where you will contribute to the architecture and implementation of critical platform capabilities. You'll design robust systems, write high-quality code, and ensure our services are scalable, reliable, and maintainable. The systems you help build power core campaign capabilities like audience targeting, multi‑channel content assembly, and reliable scheduling for one‑time, recurring, or triggered campaigns.

You will report to the Engineering Manager in this role.

What You’ll Do:

• Design and Build Campaign Workflows : Design and implement the core systems that let marketers create, configure, and schedule campaigns across multiple channels (email, SMS, push, etc.).
• Own Campaign Authoring & Content Assembly : Build the systems that turn authored creatives, templates, and targeting rules into a finalized, ready-to-send campaign — resolving content variants and audience eligibility ahead of delivery.
• Ensure Reliable Handoff to Delivery : Own the layer that prepares and monitors campaigns as they move to delivery, with visibility and alerting to catch failures or delays before they impact customers.
• Enable Audience Targeting & Personalization : Collaborate with Product and other engineering teams to integrate audience segmentation and personalization signals into campaign targeting, so the right content reaches the right recipient.
• Build for Extensibility : Develop flexible, configurable systems that allow new campaign types, channels, and scheduling rules to be added with minimal engineering overhead.
• Drive Operational Excellence : Maintain high system reliability through observability, metrics, alerting, and shared on‑call responsibilities, ensuring campaigns are delivered accurately and on time.
• Own Feature Delivery End‑to‑End : Take ownership of complex backend features from technical design through implementation, testing, deployment, and production support.
• Champion Engineering Best Practices : Advocate for strong code quality, testing, and system health, and mentor junior engineers to raise the team's overall technical bar.

What You Bring:

• 5+ years of software engineering experience
• Experience building and maintaining large distributed systems at scale that are fault tolerant and highly concurrent
• Exemplary software engineering skills (design, unit testing, git, code review, CI/CD)
• Strong foundation in modern backend development (e.g. Python, Ruby, etc. - we mostly use Python alongside other languages and frameworks)
• Strong experience with relational databases, schema design, and query optimization (we use PostgreSQL)
• An understanding of common web based API architectures (RESTful, GraphQL) and technologies (gRPC)
• Experience with a cloud provider e.g. AWS, Azure, GCP (we use Google Cloud Platform)
• Experience with modern distributed and microservice technologies (we use Kubernetes, Kafka, RabbitMQ)
• Familiar with Software Development Lifecycle practices, such as continuous integration/continuous delivery and automated deployment (we use tools such as Docker, Kubernetes, GitHub Actions, etc.)
• Strong technical leadership skills with the ability to collaborate with others, communicate effectively, advocate appropriately and mentor more junior engineers to improve team efficiency
• Exceptional problem‑solving skills, including the ability to efficiently identify, analyze, and resolve complex issues, and communicate to others on the team how to contribute to the solutions for these issues
• A willingness and eagerness to continuously learn, adapt to evolving technologies, and strive for personal and professional improvement.

The base pay range for this position is $140,000-$180,000/year , which can include additional bonus depending on the position ultimately offered, in addition to a full range of medical, financial, and/or other benefits. The base pay offered may vary depending on job‑related knowledge, skills, and experience.

Studies have shown that women, communities of color, and historically underrepresented people are less likely to apply to jobs unless they meet every single qualification. We are committed to building a diverse and inclusive culture where all Inkers can thrive.

If you’re excited about the role but don’t meet all of the abovementioned qualifications, we encourage you to apply. Our differences bring a breadth of knowledge and perspectives that makes us collectively stronger.

We welcome and employ people regardless of race, color, gender identity or expression, religion, genetic information, parental or pregnancy status, national origin, sexual orientation, age, citizenship, marital status, ethnicity, family or marital status, physical and mental ability, political affiliation, disability, Veteran status, or other protected characteristics. We are proud to be an equal opportunity employer.