Litmus

Email testing, previews, analytics platform

Senior Software Engineer - Golang, C++

Backend EngineeringConfirmed live in the last 24 hours

Full-timeToronto, ON, CanadaIn-person

About the Job

Requirements

At least 4 years of Golang experience, or 5–10 years of working experience with C/C++ and willingness to try Golang.
Experience developing message-driven applications.
Experience with one or more messaging protocols and message brokers, such as MQTT, AMQP, NATS, NCQ, or Kafka.
Understanding of performance bottlenecks, including CPU caches and Linux caches, and optimization techniques.
Understanding of encryption, digital signature, authentication, and authorization technologies.
Understanding of REST and gRPC APIs.
Experience writing C/C++ applications.

Responsibilities

Develop high-performance, highly scalable message-driven applications for Linux.
Write testable and highly reliable code.
Participate in planning and design activities as part of the delivery team.

Desired Qualifications

Understanding of systemd, D-Bus, and socket activation.
Understanding of the Linux networking stack, including the Netlink interface and systemd-networkd.
Understanding of application packaging, such as deb and rpm.
Previous C/C++ programming experience.
Understanding of the Linux boot process and UEFI.
Understanding of TPM and the root of trust concept.
Understanding of industrial protocols such as Modbus, Ethernet/IP, CANbus, and BACnet.
Understanding of real-time applications.
Understanding of virtualization and container technologies, such as libvirt, LXC/LXD, Docker, and KVM.
Experience with license management systems.
Experience with Python.
Experience with machine learning.

Job Description

Develop high performance and highly scalable message-driven applications for Linux
Write testable and highly reliable code
As part of a highly efficient delivery team, participating in planning and design activities

Qualifications

Please apply for this job if:

you have at least 4 years+ of Golang experience
OR you have 5-10 years of working experience with C/C++ and willing to give Golang a try.

Key Skills

Experience with development of message-driven applications
Experience with one or more messaging protocols and message brokers - MQTT, AMQP, NATS, NCQ, Kafka, etc,
Understanding of performance bottlenecks, i.e CPU caches, Linux caches and optimizations
Understanding of different encryption, digital signature, authentication and authorization technologies
Understanding of REST and gRPC APIs.
Experience with writing C/C++ applications

Bonus skillset 1 - System Programming

Understanding of systemd, d-bus, socket activation
Understanding of Linux Networking stack, i.e. Netlink interface, systemd-networkd, etc.
Understanding of application packaging - deb, rpm, etc
Previous C/C++ programming experience
Understanding of Linux boot process and UEFI
Understanding of TPM and root of trust concept

Bonus skillset 2 - Industrial Protocols

Understanding some of the industrial protocols (i.e. Modbus, Ethernet/IP, CANbus, BACnet, etc.)
Understanding of real-time applications

Bonus skillset 3 - Virtualization

Understanding virtualization and container technologies - livirt, lxc/lxd, Docker, kvm, etc.
Experience with license management systems

Bonus skills - Other

Experience with python
Experience with ML

Additional Information

Standard benefits included (medical, dental, vision, suppl.), travel stipend, great snacks, company outings & potential for stock options.

About the Company

Litmus

Email testing, previews, analytics platform

Litmus provides a subscription-based email marketing platform that combines email testing, analytics, and optimization with AI-driven personalization and security features to improve conversions and ROI for businesses of all sizes. Its product suite includes email previews across devices and clients, spam testing, and performance analytics, along with AI-assisted subject lines and copy suggestions, targeted at marketing teams and agencies who need collaboration tools and reliable email performance data. Unlike many competitors, Litmus emphasizes strong security, seamless collaboration, and AI-powered content optimization within an all-in-one platform. The company's goal is to help customers improve the effectiveness of their email campaigns and maximize ROI through better testing, analytics, and personalization.

Company size: 51-200
Company stage: Late Stage VC
Total funding: $49M
Headquarters: Cambridge, MA
Founded: 2014

Recently Posted Jobs

Explore more opportunities at Litmus

See more jobs