Senior Software Engineer - Core Systems

The Company

At Nylas, we specialize in making it easier for developers to add email, calendar, and contact management features into their applications. We provide tools called APIs, which streamline the integration of these functionalities, ensuring they are secure and effective. This enables better, safer, and more reliable communication within apps.

Supporting over 100,000 developers and collaborating with more than 900 companies globally, Nylas plays a pivotal role in how digital communication tools are built and utilized. Our technology spans various sectors, from healthcare to education, simplifying the complex process of app development related to communications. By reducing the barriers in communication technology, we empower developers to innovate and enhance user interaction across platforms.

The Team

Our team is responsible for building and operating the core platforms that power Nylas’s communication services at scale. We handle millions of requests per day and ensure the reliability and efficiency of business-critical functionality for our customers. Specifically, we own:

1. Send Platform: Powers the send email functionality for all Nylas customers, handling ~10 million API calls every day.

2. Webhook Platform: Manages the dispatch of webhooks to customers, delivering ~30 million events daily.

3. Sync Engines: Enables bidirectional syncing of communication data, ensuring that both our APIs and webhooks remain accurate and up to date for our customers.

Working on this team means innovating on large-scale distributed systems, ensuring high availability and low latency, and pushing the boundaries of what’s possible in real-time communications

The Role

As a Senior Engineer on the Core Systems team, you will be the technical leader responsible for owning and evolving our Send Platform, which processes over 10 million API calls daily. Your primary focus will be on scaling the system to handle a projected 10x increase in traffic, building new features, and maintaining the high reliability our customers expect. In addition to your work on the Send Platform, you’ll set the technical direction for our broader Core Systems team, influence design decisions across engineering, and lead high-visibility projects that enable Nylas to operate effectively at scale.

You will be instrumental in fostering a culture of technical excellence and will serve as a mentor to your teammates, driving best practices and continuous improvement. This role requires a balance of hands-on software development, strategic thinking, and cross-functional collaboration to deliver solutions that meet demanding performance, security, and uptime requirements.  

What You’ll Do

• Own and enhance the Send Platform APIs, ensuring it can reliably handle a 10x increase in traffic.

• Collaborate with cross-functional teams to design and launch new features that drive real business impact.

• Develop and maintain comprehensive test suites to ensure system-wide reliability, stability, and performance. 

• Provide technical leadership by setting best practices, championing code quality, and maintaining high engineering standards.

• Mentor and guide team members, fostering a culture of continuous learning and technical excellence.

• Analyze and improve system architecture, driving strategic decisions around scalability and reliability.

• Lead high-visibility projects that influence technical direction across the broader Core Systems team and beyond.

• Shorten the test, release, and deployment verification feedback cycles

• Collaborate with your team and others to support deploying and maintaining services built in Go and Javascript

• Project platform and product needs to build tooling to accelerate future feature development

What You Must Bring

• BS in Computer Science, Engineering or equivalent 

• At least 4+ years of experience in backend development on high-impact projects

• Be a solid backend engineer who understands systems, high concurrency design patterns and distributed system concepts

• Have hands-on experience in building and maintaining applications, including both API and client-side implementations

• Experience developing and testing with Go and JavaScript

• Experience with microservices, distributed systems, and CI/CD pipelines

• Experience with modern database and storage (MySQL, NoSQL)

• Some experience with containers and related infrastructure (Docker and K8S)

• Some experience with Cloud Services (AWS or GCP is preferred)

Perks/Benefits

• Healthcare: Extended healthcare coverage for you and your family

• Unlimited Paid Time Off (PTO): We take this very seriously as we care about the well-being of our employees

• RRSP with 3% employer contribution

• Education Stipend: $1,250 annual education & development benefit

• Cell Phone: $50 per month stipend towards cell phone reimbursement

• Fully Paid Parental Leave: 12 weeks parental leave (maternity & paternity)

Interview Process:

• Round 1: 30 minute Google Meet interview with the hiring manager. 

• Round 2: 60 minute live technical assessment via Google Meet with a team member.

• Round 3: 45 minute Google Meet interview with the department head.

• Round 4: Three (3) 45 minute Google Meet interviews with various team members (max 3 hours).

During the various discussions, candidates selected to meet with us are strongly encouraged to not only discuss their knowledge, skills, experience, and abilities but also to showcase examples of their current or previous work. We expect you to clearly outline the "what," "why," and "how" behind your contributions.

The estimated base salary range for this position is $145,000 - $185,000 CAD. Actual compensation will be determined based on individual qualifications, which are objectively assessed during the interview process. Factors influencing salary include knowledge, skills, experience, and abilities.

Nylas is registered as an employer in many, but not all, states/provinces. If you are not located in or able to work from a state/province where Nylas is registered, you will not be eligible for employment. Visa sponsorship may not be available in certain remote locations.