Time zones: EST (UTC -5), CST (UTC -6), MST (UTC -7), PST (UTC -8), AKST (UTC -9), HST (UTC -10)About UsClose is a bootstrapped, profitable, 100% remote, ~100 person team of thoughtful individuals who prioritize taking ownership and making a meaningful impact. Were eager to make a product our customers fall in love with over and over again.We small scaling businesses. Since 2013, weve 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 RoleYou 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 YouWere looking for high achieving, full-time Software Engineers to join our engineering team. Someone who has a good understanding in web technologies and wants to help design, implement, launch, and scale major systems and user-facing features.You're comfortable working in a fast-paced environment with a small and talented team where you're supported in your efforts to grow professionally. You're able to manage your 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 featuresImplementing new AI features to turbocharge our customers daily tasksImproving the performance and scalability of our GraphQL and REST APIImproving how we sync millions of sales emails and calendar events each monthWorking with Twilio's API, WebSockets, and WebRTC to improve our calling featuresBuilding user-facing analytics features that provide actionable insights based on sales activity dataImproving our Elasticsearch-backed powerful search featuresImproving our internal messaging infrastructure using streaming technologies like Kafka and RedisBuilding new and enhancing existing integrations with other SaaS platforms like Googles G Suite, Zapier, and web conferencing providersEnhancing our web app with real-time updates powered by GraphQL SubscriptionsLeveraging the latest AI LLMs from providers like OpenAI, Groq and AssemblyAIHelp manage our ever growing data processing needsBillions of Mongo documentsMillions and millions of rows of PostgreSQL data55 Terabytes of logs / month500 billion OTEL spans over the last 30 days10+ million events / dayTens of thousands of docker containers7 million minutes of call recordings / monthPetabytes / month of network trafficRequirements...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. Mid-level candidates should have ~3 years of similar experience and be eager to level up with the right opportunity.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.Located in the USA (lower 48 timezones).Bonus point if you haveContributed 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. Why Close?Watch our most recent culture video featuring our annual team retreat in Italy100% remote company5 weeks PTO + Winter & Summer Holiday Breaks with 2 additional PTO days for every year with the company1 month paid sabbatical every 5 yearsPaid parental leaveMedical, Dental, Vision with HSA option (US residents)401k matching at 6% (US residents)Dependent care FSA (US residents)Our story and team Our ValuesBuild a house you want to live in -- Examine long-term thinking and actionNo BS -- Practice transparency and honesty, especially when its hardInvest in each other -- Build successful relationships with your coworkers and customersDiscipline equals freedom -- Keep your word to yourself and othersStrive for greatness -- Constantly challenge yourself and othersHow We Work TogetherProductivity, Quality & Impact: We dont track hours. We trust youre an adult and know best how to prioritize, meet your goals and contribute at a high level.Asynchronous communication & collaboration: We have team members all over the world. We dont expect anyone to work untraditional hours, that means our default is async. Most teams have 2-5 hours of internal meetings weekly.Appreciation for Deep Work: *During your normal work day, not after a day of meetings*.Autonomy & Freedom: Create a work environment that is sustainable for you. We place a high amount of trust and responsibility with our team members from the start.We are looking for US-based Software Engineers to join our team. Base salary range for Senior I & II is $140,000 to $210,000. Related Jobs See more Back-End Programming jobs