Posted on 
Dec 21, 2023

Staff Machine Learning Engineer (IC5)

Mid-Senior ICs
Engineering, Data Science + Analytics
Sourcegraph
Sourcegraph
Sourcegraph
Series D
101-250
Software, Security & Developer Tools

Sourcegraph is a code AI platform that makes it easy to read, write, and fix code–even in big, complex code bases.

Job Description

Working hours

-----------------

🌎 Given that we are an all-remote company and hire almost anywhere in the world, we don’t have a particular time-zone preference for this role. However, you may need to be available for non-recurring urgent meetings outside of working hours.

Why this job is exciting

----------------------------

We are creating a machine learning team at Sourcegraph, aimed at creating the most powerful coding assistant in the world. Many companies are trying, but Sourcegraph is uniquely differentiated by our rich code intelligence data and powerful code search platform. In the world of prompting LLMs, context is everything, and Sourcegraph’s context is simply the best you can get: IDE-quality, global-scale, and served lightning fast. Our code intelligence, married with modern AI, is already providing a remarkable alpha experience, and you can help us unlock its full potential.

We are looking for an experienced full stack ML engineer with demonstrated industry experience in productionizing large scale ML models in industrial settings. And if you happen to have an entrepreneurial streak, you’re in luck:  We have an enterprise distribution pipeline, so whatever you build can be deployed straight to enterprise customers with some of the largest code bases in the world, without all the go-to-market hassle you’d encounter in a startup.

You will be a scientist at Sourcegraph Labs doing R&D, and pushing the boundaries of what AI can do, as an IC on our new ML team. You will have the full power of Sourcegraph’s Code Intelligence Platform at your disposal, and you’ll be working on a coding assistant that is already awesome even after just a few weeks of work, so this is a greenfield opportunity to multiply dev productivity to unprecedented levels.

📅 Within one month, you will…

  • Start building a trusting relationship with your peers, and learning the company structure.
  • Be set up to do local development, and be actively prototyping, and dive deep into how AI and ML is already used at Sourcegraph and identify ways to improve moving forward.
  • Start informing the design of ML infra/platform to support deploying of large scale ML models
  • Develop simulated datasets using Gym style frameworks across a number of Cody use cases.
  • Experiment with changes to Cody prompts, context sources and evaluate the changes with offline experimentation datasets.
  • Ship a substantial new feature to end users.

📅 Within three months, you will…

  • Be seen as a subject matter expert in all things ML at Sourcegraph.
  • Be developing and executing the overall ML infra strategy to maximize impact of ML for Cody users.
  • Be ensuring the adoption of best practices in machine learning model development and experimentation.
  • Building out feature computation, storage, monitoring, analysis and serving systems for features required across our Cody LLM stack
  • Developing distributed training & experiment infrastructure over Code AI datasets, and scaling distributed backend services to reliably support high-QPS low latency use cases.
  • Be following all the relevant research, and conducting research of your own.

📅 Within six months, you will…

  • Be driving the technical vision and owning the overall modeling and ML infra roadmap for context ranking and LLM inference for Cody
  • Be fully ramped up and owning key pieces of the assistant, and  other relevant parts of the Sourcegraph product.
  • Be helping design and build what might become the biggest dev accelerator in 20 years.

About you

-------------

You are an experienced full stack ML engineer with demonstrated industry experience in formulating ML solutions, developing end to end data orchestration pipelines, deploying large scale ML models and experimenting offline and online to drive business impact for Cody users. You want to be part of a world-class team to push the boundaries of AI, with a particular focus on leveraging Sourcegraph’s code intelligence to leapfrog competitors.

First, your AI background could look like a few different things:

  • Demonstrated ability to design, build and scale ML training and inference services.
  • Developing and maintaining distributed training, inference and experimentation infrastructure
  • Experience with taking advantage of state of the art accelerators (TPUs, GPUs) to scale distributed training jobs
  • Experience with ML orchestration using Airflow, Flyte or similar frameworks
  • Developing a high-throughput inference engine providing low latency performance using a mix of CPU and GPU hardware
  • Building core data and model metadata systems powering the end-to-end ML lifecycle, and advancing the usage of ML monitoring and observability
  • You have some hands-on experience working with large foundational models and their toolkits. Familiarity with LLMs such as Llama, StarCoder etc., model fine-tuning techniques (LORA, QLORA), prompting techniques (Chain of Thought, ReACT, etc) and model evaluation.

Second, you have some understanding of programming languages, and tools that manipulate code. This could have taken any number of forms; e.g.:

  • You’ve worked with grammars and parser generators, or Treesitter
  • You’ve worked with compilers and semantic analysis, e.g. type systems
  • You’ve written an interpreter, or worked on a virtual machine
  • You’ve done static analysis involving scanning source code for semantic information

It doesn’t really matter how you know it, but it’s important that you’re familiar with the basic concepts of semantic representations of source code, and how they’re produced and consumed by tooling.

Preferred qualifications:

  • 6+ years of industry experience with a solid understanding of engineering, infrastructure and ML best practices
  • Industry experience building end-to-end ML infrastructure is mandatory
  • Hands-on experience training and serving large-scale (10GB+) models using frameworks such as Tensorflow or PyTorch
  • Experience with Docker, Kubernetes, Kubeflow, knowledge of CI/CD in the context of ML pipelines is a plus
  • Experience with CUDA, model compilers, and other model-specific optimizations.
  • Experience with LLM inference latency optimization techniques, e.g. kernel fusion, quantization, dynamic batching is a big plus

If you’ve been anywhere near the field lately, you can probably pick up enough about LLM capabilities to be able to drive this space, as it’s all greenfield.

Level

---------

📊 This job is an IC5.  You can read more about our job leveling philosophy in our Handbook.

Compensation

----------------

💸 We pay you an above-average salary because we want to hire the best people who are fully focused on helping Sourcegraph succeed, not worried about paying bills. You will have the flexibility to work and live anywhere in the world (unless specified otherwise in the job description), and we’ll never take your location or current/past salary information into account when determining your compensation.  As an open and transparent company that values equitable and competitive compensation for everyone, our compensation ranges are visible to every single Sourcegraph Teammate. To determine your salary, we use a number of market and data-driven salary sources and target the high-end of the range, ensuring that we’re always paying above market regardless of where you live in the world.  

💰The target compensation for this role is $244,000 USD base.

📈 In addition to our cash compensation, we offer equity (because when we succeed as a company, we want you to succeed, too) and generous perks & benefits.

Interview process

---------------------

Below is the interview process you can expect for this role (you can read more about [the types of interviews](https://handbook.sourcegraph.com/talent/typesofinterviews) in our Handbook). It may look like a lot of steps, but rest assured that we move quickly and the steps are designed to help you get the information needed to determine if we’re the right fit for you… Interviewing is a two-way street, after all!

We expect the interview process to take 5 hours in total.

👋 Introduction Stage - we have initial conversations to get to know you better…

🧑‍💻 Team Interview Stage - we then delve into your experience in more depth and introduce you to members of the team, including cross-functional partners…

  • [45m] Technical Deep Dive with Dominic Cooney + Julie Tibshirani
  • [60m] Architecture Interview with Rok Novosel
  • [Async] Pairing Exercise with Beyang Liu

🎉 Final Interview Stage - we move you to our final round, where you gain a better understanding of our business and values holistically…

Please note - you are welcome to request additional conversations with anyone you would like to meet, but didn’t get to meet during the interview process.

Working hours

🌎 Given that we are an all-remote company and hire almost anywhere in the world, we don’t have a particular time-zone preference for this role. However, you may need to be available for non-recurring urgent meetings outside of working hours.

Why this job is exciting

We are creating a machine learning team at Sourcegraph, aimed at creating the most powerful coding assistant in the world. Many companies are trying, but Sourcegraph is uniquely differentiated by our rich code intelligence data and powerful code search platform. In the world of prompting LLMs, context is everything, and Sourcegraph’s context is simply the best you can get: IDE-quality, global-scale, and served lightning fast. Our code intelligence, married with modern AI, is already providing a remarkable alpha experience, and you can help us unlock its full potential.

We are looking for an experienced full stack ML engineer with demonstrated industry experience in productionizing large scale ML models in industrial settings. And if you happen to have an entrepreneurial streak, you’re in luck:  We have an enterprise distribution pipeline, so whatever you build can be deployed straight to enterprise customers with some of the largest code bases in the world, without all the go-to-market hassle you’d encounter in a startup.

You will be a scientist at Sourcegraph Labs doing R&D, and pushing the boundaries of what AI can do, as an IC on our new ML team. You will have the full power of Sourcegraph’s Code Intelligence Platform at your disposal, and you’ll be working on a coding assistant that is already awesome even after just a few weeks of work, so this is a greenfield opportunity to multiply dev productivity to unprecedented levels.

📅 Within one month, you will…

  • Start building a trusting relationship with your peers, and learning the company structure.
  • Be set up to do local development, and be actively prototyping, and dive deep into how AI and ML is already used at Sourcegraph and identify ways to improve moving forward.
  • Start informing the design of ML infra/platform to support deploying of large scale ML models
  • Develop simulated datasets using Gym style frameworks across a number of Cody use cases.
  • Experiment with changes to Cody prompts, context sources and evaluate the changes with offline experimentation datasets.
  • Ship a substantial new feature to end users.

📅 Within three months, you will…

  • Be seen as a subject matter expert in all things ML at Sourcegraph.
  • Be developing and executing the overall ML infra strategy to maximize impact of ML for Cody users.
  • Be ensuring the adoption of best practices in machine learning model development and experimentation.
  • Building out feature computation, storage, monitoring, analysis and serving systems for features required across our Cody LLM stack
  • Developing distributed training & experiment infrastructure over Code AI datasets, and scaling distributed backend services to reliably support high-QPS low latency use cases.
  • Be following all the relevant research, and conducting research of your own.

📅 Within six months, you will…

  • Be driving the technical vision and owning the overall modeling and ML infra roadmap for context ranking and LLM inference for Cody
  • Be fully ramped up and owning key pieces of the assistant, and  other relevant parts of the Sourcegraph product.
  • Be helping design and build what might become the biggest dev accelerator in 20 years.

About you

You are an experienced full stack ML engineer with demonstrated industry experience in formulating ML solutions, developing end to end data orchestration pipelines, deploying large scale ML models and experimenting offline and online to drive business impact for Cody users. You want to be part of a world-class team to push the boundaries of AI, with a particular focus on leveraging Sourcegraph’s code intelligence to leapfrog competitors.

First, your AI background could look like a few different things:

  • Demonstrated ability to design, build and scale ML training and inference services.
  • Developing and maintaining distributed training, inference and experimentation infrastructure
  • Experience with taking advantage of state of the art accelerators (TPUs, GPUs) to scale distributed training jobs
  • Experience with ML orchestration using Airflow, Flyte or similar frameworks
  • Developing a high-throughput inference engine providing low latency performance using a mix of CPU and GPU hardware
  • Building core data and model metadata systems powering the end-to-end ML lifecycle, and advancing the usage of ML monitoring and observability
  • You have some hands-on experience working with large foundational models and their toolkits. Familiarity with LLMs such as Llama, StarCoder etc., model fine-tuning techniques (LORA, QLORA), prompting techniques (Chain of Thought, ReACT, etc) and model evaluation.

Second, you have some understanding of programming languages, and tools that manipulate code. This could have taken any number of forms; e.g.:

  • You’ve worked with grammars and parser generators, or Treesitter
  • You’ve worked with compilers and semantic analysis, e.g. type systems
  • You’ve written an interpreter, or worked on a virtual machine
  • You’ve done static analysis involving scanning source code for semantic information

It doesn’t really matter how you know it, but it’s important that you’re familiar with the basic concepts of semantic representations of source code, and how they’re produced and consumed by tooling.

Preferred qualifications:

  • 6+ years of industry experience with a solid understanding of engineering, infrastructure and ML best practices
  • Industry experience building end-to-end ML infrastructure is mandatory
  • Hands-on experience training and serving large-scale (10GB+) models using frameworks such as Tensorflow or PyTorch
  • Experience with Docker, Kubernetes, Kubeflow, knowledge of CI/CD in the context of ML pipelines is a plus
  • Experience with CUDA, model compilers, and other model-specific optimizations.
  • Experience with LLM inference latency optimization techniques, e.g. kernel fusion, quantization, dynamic batching is a big plus

If you’ve been anywhere near the field lately, you can probably pick up enough about LLM capabilities to be able to drive this space, as it’s all greenfield.

Level

📊 This job is an IC5.  You can read more about our job leveling philosophy in our Handbook.

Compensation

💸 We pay you an above-average salary because we want to hire the best people who are fully focused on helping Sourcegraph succeed, not worried about paying bills. You will have the flexibility to work and live anywhere in the world (unless specified otherwise in the job description), and we’ll never take your location or current/past salary information into account when determining your compensation.  As an open and transparent company that values equitable and competitive compensation for everyone, our compensation ranges are visible to every single Sourcegraph Teammate. To determine your salary, we use a number of market and data-driven salary sources and target the high-end of the range, ensuring that we’re always paying above market regardless of where you live in the world.  

💰The target compensation for this role is $244,000 USD base.

📈 In addition to our cash compensation, we offer equity (because when we succeed as a company, we want you to succeed, too) and generous perks & benefits.

Interview process

Below is the interview process you can expect for this role (you can read more about the types of interviews in our Handbook). It may look like a lot of steps, but rest assured that we move quickly and the steps are designed to help you get the information needed to determine if we’re the right fit for you… Interviewing is a two-way street, after all! 

We expect the interview process to take 5 hours in total.

👋 Introduction Stage - we have initial conversations to get to know you better…

  • [30m] Recruiter Screen with Devon Coords
  • [60m] Hiring Manager Screen / ML Breadth with Rishabh Mehrotra

🧑‍💻 Team Interview Stage - we then delve into your experience in more depth and introduce you to members of the team, including cross-functional partners…

  • [45m] Technical Deep Dive with Dominic Cooney + Julie Tibshirani
  • [60m] Architecture Interview with Rok Novosel
  • [Async] Pairing Exercise with Beyang Liu

🎉 Final Interview Stage - we move you to our final round, where you gain a better understanding of our business and values holistically…

Please note - you are welcome to request additional conversations with anyone you would like to meet, but didn’t get to meet during the interview process.

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