Careers at Call Sumo


back end engineer

Join our fast-growing tech company as we develop AI based software that has been created to support marketing and communication services from small businesses to large corporations.

We are looking for a remote-located Back-End engineer with 5+ years of experience. You will be a self-motivated, team player who thrives in a fast-paced environment, has a passion for development and does not want to be hand-held. Our ideal candidate considers themselves a Linux Guru, a master at Bash scripting and lives on SSH. You must be organized, detail oriented and analytical.

Required knowledge in the following:

Must be proficient in: Flask, RESTful Web Services, Node.js, Object-oriented Programming

Strong working knowledge of: Docker Compose, Django (Legacy), JWT Authentication, Gitlab, Jira

Our Backend stack that the successful candidate will work in:

Cloud Platforms: Twilio API, GCP Machine Learning API, AWS Machine Learning API

CRM APIs: Salesforce

Artificial Intelligence: Weka

Scripting Skills: NumPy, C#, .NET, Tornado (for Web Sockets)

Framework: Angular, Stripe API, Insomnia App

Platforms: SendGrid API, Scaling with Messaging, Queues

Other knowledge: Database Migrations, scalable software architecture, Windows Installer, Building Backends for iOS & Android Apps

Our DevOps stack that the successful candidate will work in:

Operating Systems: Ubuntu 14-20

Object-oriented Programming: Python 2.7 & 3.5, Shell Scripts

Cloud Platforms: Digital Ocean, Twilio, Google Cloud (Speech, Queues, Senders),

AWS: experience using a range of AWS technologies including, EC2, RDS, Workspaces

RDBMS Management Software: MySQL, Mongo DB, Postgress

Website Management: WordPress, GoDaddy, Sendgrid, CloudFlare, Lets Encrypt,

PaaS Services: Docker, CapRover, HaProxy

Software: Slack, Office 365

Desired Skills:

Nice to have some of these and a willingness to work on the rest.

We are looking for someone who is a self-classified Linux Guru, lives & breaths SSH and writes Bash scripting like it is their native language. Meticulous attention to detail, organization, & effective communication are vital. The successful candidate will need skills that can be scaled up as our startup grows. This would include ongoing documentation, analysis of logs, events, debugging, tailing logs and failures to plan for disasters. As well as setting coding standards for ease of growing the team. Experience with developing, testing & deploying to different environments, as well as, high performing Realtime SaaS apps. Strong data analysis, design & architecture. Finally, we need a candidate who strives for efficiency…in other words, we need someone to make sure AWS doesn’t rob us blind.

Other abilities that are needed to fit with our team:

All our team members are pushing hard to achieve the same goal and we want someone with a similar drive to join us. We are looking for a team player, who wants to take on a leadership role, but is still open to receiving coaching for themselves. Our prime candidate will be self-driven, responsible, takes pride of ownership and can work well under pressure. Knowing how to take a monumental task and breaking into down into manageable pieces will serve our ideal candidate well, as will planning for different outcomes (good or bad). We are looking for someone who enjoys hard work, learning and realizes that failures often come before success. As this a remote position, communication will be key. If you enjoy solving problems or puzzles, then you will be a great fit for this position.


As we are based in Silicon Valley, we expect you to be available for meetings during Pacific Time

Please include your GitHub profile if you have one.

More than one position may be filled from this job posting.