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Senior Software Engineer - Backend/Python - USA Only (100% Remote)Close • New York, New York, United States
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XX

Senior Software Engineer - Backend/Python - USA Only (100% Remote)

Close
  • US
    New York, New York, United States
  • US
    New York, New York, United States
Apply Now

About

About Us
Close
is a bootstrapped, profitable, 100% remote, ~100 person team of thoughtful individuals who prioritize taking ownership and making a meaningful impact. We’re eager to make a product our customers fall in love with over and over again.
We
small scaling businesses. Since 2013, we’ve been building a CRM that focuses on better communication, without the hassle of manual data entry or a complex UI. We are out to supercharge sales productivity with the most modern, thoughtfully designed, all-in-one, communication-focused CRM.
Our backend
tech stack
consists primarily of Python Flask web apps with our
TaskTiger
scheduler handling many of the backend asynchronous task processing chores. Our data stores include MongoDB, PostgreSQL, Elasticsearch, and Redis. The underlying infrastructure runs on AWS using a combination of managed services like EKS, MSK, RDS and ElasticCache and non-managed services running on EC2 instances. We have CI/CD pipelines that build Docker images, run automated tests and deploy to Kubernetes clusters. We also use these images in our local development environment allowing coding locally against all of our services. We have a well-documented
public API
that is consumed by our front-end JavaScript app as well as numerous integrations. Our infrastructure is heavily automated using Terraform, Ansible and other AWS tools.
Our product development process is inspired by
Shape Up . We love open sourcing our code and ideas on
our GitHub
and on
The Making of Close , our behind-the-scenes Product & Engineering blog. Check out our open source projects like
SocketShark ,
TaskTiger ,
LimitLion
and
ciso8601 .
About the Role
You will be joining one of our six cross-functional teams. These are the CRM, Admin & Onboarding, Conversations, Messaging & Scheduling, Automations & Integrations and Data Insights teams. You will be regularly collaborating with other backend & frontend engineers, product managers, designers, and other teams here at Close.
About You
You are a curiosity-led, high-performing, full-time Software Engineer who is impassioned by the impact your work can have on your fellow team members and, ultimately, our end users. You value collaboration, knowledge sharing, and have a good understanding of web technologies and want to help design, implement, launch, and scale major systems and user-facing features.
Youre comfortable working in a fast-paced environment with a small and talented team where youre supported in your efforts to grow professionally. Youre able to manage time well, communicate effectively, and collaborate in a fully distributed team.
Come help us with projects like...
Conceiving, designing, building, and launching new user-facing features
Implementing new AI features to turbocharge our customers’ daily tasks
Improving the performance and scalability of our GraphQL and
REST
API
Improving how we
sync
millions of sales emails and calendar events each month
Working with Twilios API, WebSockets, and WebRTC to improve our
calling features
Building user-facing analytics features that provide actionable insights based on sales activity data
Improving our Elasticsearch-backed powerful search features
Improving our internal messaging infrastructure using streaming technologies like Kafka and RedisBuilding new and enhancing existing integrations with other SaaS platforms like Google’s G Suite, Zapier, and web conferencing providersEnhancing our web app with real-time updates powered by GraphQL Subscriptions
Leveraging the latest AI LLMs from providers like OpenAI, Groq and AssemblyAI
Help manage our ever growing data processing needs…
Billions of Mongo documents
Millions and millions of rows of PostgreSQL data
55 Terabytes of logs / month
500 billion OTEL spans over the last 30 days
10+ million events / day
Tens of thousands of docker containers
7 million minutes of call recordings / month
Petabytes / month of network traffic
Requirements...
Senior 1 & 2 level candidates should have 5+ years of experience building modern back-end systems.
Staff level candidates should have 8+ years of experience.
Professional Python experience is preferred but a working knowledge of Python with additional experience in other languages is acceptable if you have a desire to work with Python.
You have built web APIs that were Internet facing or supported other high volume loads.
You have hands-on production experience working with MongoDB, PostgreSQL, Elasticsearch, or similar data stores.
You have experience designing, scaling, debugging, and optimizing systems to make them fast and reliable.
You have participated in code reviews and provided overall code quality suggestions to help maintain the structure and quality of the codebase.
You care about the craftsmanship of the code and systems you produce.
You are able to speak and write in English
You are located in the USA (ET, CT, MT, PT)
Bonus point if you have…
Contributed open source code related to our tech stack.
Led small project teams building and launching features.
Built B2B SaaS products.
Implemented features that leveraged AI to deliver unimaginable new product capabilities.
Worked with complex architectures that support multiple APIs (e.g. REST, GQL, WebSockets) as well as async task and event processing frameworks.
Benefits
Competitive compensation including an organization-wide goal-based bonus
Paid Time Off: 5 Weeks PTO upon joining + Winter Holiday Break and Summer Holiday Break. Each year with the company, you’ll receive 2 additional PTO days
80% Work Option: Work with your manager to choose between working 5 day weeks (standard full-time) or 4 day weeks @ 80% pay
Paid Parental Leave for primary and secondary caregivers
Sabbatical: After 5 years with the team, you’re eligible for a 1 month paid sabbatical
Healthcare (US residents): Medical, Dental, Vision with HSA option (US residents), Dependent care FSA (US residents)
401k (US residents): We match 6% contributions with immediate vesting
Our Values
Build a house you want to live in - Examine long-term thinking and action
No BS - Practice transparency and honesty, especially when it’s hard
Invest in each other - Build successful relationships with your coworkers and customers
Discipline equals freedom - Keep your word to yourself and others
Strive for greatness - Constantly challenge yourself and others
Learn More
Listen to our CEO and Founder, Steli Efti, tell the story of Close’s journey in the
$0-30m Blueprint
.
Watch
our culture video
from our 2023 team retreat in Milan. Every year our entire team gathers in person to build connection, foster cross-functional collaboration, and have fun. In 2025, we’re headed to Paris, France.
Explore our product. You can watch a ten-minute video demo on
our home page.
Our Hiring Process
We ask a few role-specific questions as part of our application process. These questions are designed to help us learn more about you from the start so please answer each question thoughtfully. We see this as an opportunity to get to know you beyond your resume.
While we are excited by all the opportunities that generative AI has unlocked, we request that you refrain from relying on AI tools when completing an application. Every application is read closely by humans and any obviously AI generated applications will be disregarded.
Regardless of fit, you can expect to hear back from our team with an update on the status of your candidacy.
If you progress to the interview process, you’ll receive a full outline of the role-specific interview process in your first touchpoint with us. We do our best to make the hiring process clear and human.
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  • New York, New York, United States

Languages

  • English
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