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description=A technology podcast, from Jane Street. Get a peek at how Jane Street approaches technology, and how those ideas relate to the tech landscape more broadly.;

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Text of the page (random words):
s state space allowing you to pinpoint and replay the events leading to crashes bugs and violations of invariants in this episode he and ron take a broad view of testing considering not just the unreasonable effectiveness of example based tests but also property based testing fuzzing chaos testing type systems and formal methods how do you blend these techniques to find the subtle show stopper bugs that will otherwise wake you up at 3am as will has discovered making testing less painful is actually a tour of some of computer science s most vexing and interesting problems go to episode page why ml needs a new programming language with chris lattner episode 25 september 3rd 2025 machine learning programming languages chris lattner is the creator of llvm and led the development of the swift language at apple with mojo he s taking another big swing how do you make the process of getting the full power out of modern gpus productive and fun in this episode ron and chris discuss how to design a language that s easy to use while still providing the level of control required to write state of the art kernels a key idea is to ask programmers to fully reckon with the details of the hardware but making that work manageable and shareable via a form of type safe metaprogramming the aim is to support both specialization to the computation in question as well as to the hardware platform somebody has to do this work chris says if we ever want to get to an ecosystem where one vendor doesn t control everything go to episode page the thermodynamics of trading with daniel pontecorvo episode 24 july 25th 2025 ways of working hardware daniel pontecorvo runs the physical engineering team at jane street this group blends architecture mechanical engineering electrical engineering and construction management to build functional physical spaces in this episode ron and dan go deep on the challenge of heat exchange in a datacenter especially in the face of increasingly dense power demands and the analogous problem of keeping traders cool at their desks along the way they discuss the way ml is changing the physical constraints of computing the benefits of having physical engineering expertise in house the importance of monitoring and whether you really need apollo style co2 scrubbers to ensure your office gets fresh air go to episode page building tools for traders with ian henry episode 23 may 28th 2025 programming languages trading and research ui ux ian henry started his career at warby parker and trello building consumer apps for millions of users now he writes high performance tools for a small set of experts on jane street s options desk in this episode ron and ian explore what it s like writing code at a company that has been on its own parallel universe software adventure for the last twenty years along the way they go on a tour of ian s whimsical and sophisticated side projects like bauble a playground for rendering trippy 3d shapes using signed distance functions that have gone on to inform his work writing typesafe frontend code for users who measure time in microseconds and prefer their uis to be six pixels high go to episode page finding signal in the noise machine learning and the markets with in young cho episode 22 march 10th 2025 machine learning trading and research in young cho thought she was going to be a doctor but fell into a trading internship at jane street now she helps lead the research group s efforts in machine learning in this episode in young and ron touch on the porous boundaries between trading research and software engineering which require different sensibilities but are often blended in a single person they discuss the tension between flexible research tools and robust production systems the challenges of ml in a low data high noise environment subject to frequent regime changes and the shift from simple linear models to deep neural networks go to episode page the uncertain art of accelerating ml models with sylvain gugger episode 21 october 14th 2024 machine learning performance sylvain gugger is a former math teacher who fell into machine learning via a mooc and became an expert in the low level performance details of neural networks he s now on the ml infra team at jane street where he helps traders speed up their models in this episode sylvain and ron go deep on learning rate schedules the subtle performance bugs pytorch lets you write how to keep a hungry gpu well fed and the importance of reproducibility in training runs they also discuss some of the unique challenges of doing ml in the world of trading like the unusual size and shape of market data and the need to do inference at very low latencies go to episode page solving puzzles in production with liora friedberg episode 20 october 7th 2024 ways of working liora friedberg is a production engineer at jane street with a background in economics and computer science in this episode liora and ron discuss how production engineering blends high stakes puzzle solving with thoughtful software engineering as the people doing support build tools to make that support less necessary they also discuss how jane street uses both tabletop simulation and hands on exercises to train production engineers what skills effective production engineers have in common and how to create a culture where people aren t blamed for making costly mistakes go to episode page from the lab to the trading floor designing for expert users with erin murphy episode 19 july 10th 2024 ways of working ui ux erin murphy is a ux designer at jane street and before that she worked at nasa s jet propulsion laboratory building user interfaces for space missions she s also an illustrator with her own quarterly journal in this episode erin and ron discuss the challenge of doing user centered design in an organization where experts are used to building tools for themselves how do you bring a command line interface to the web without making it worse for power users they also discuss how beauty in design is more about utility than aesthetics what jane street looks for in ux candidates and how to help engineers discover what their users really want go to episode page performance engineering on hard mode with andrew hunter episode 18 november 28th 2023 performance andrew hunter likes making code go fast before joining jane street he worked for seven years at google on multithreaded architecture and was a tech lead for tcmalloc google s world class scalable malloc implementation in this episode andrew and ron discuss how paradoxically in some ways it s easier to optimize systems at hyperscale because of the impact that even miniscule changes can have finding performance wins in trading systems which operate at a smaller scale but which have bursty low latency workloads is often trickier andrew explains how he approaches the problem including his favorite profiling techniques and visualization tools the unique challenges of optimizing ocaml versus c and when you should and shouldn t care about nanoseconds they also touch on the joys of musical theater and how to pass an interview when you re sleep deprived go to episode page a poet s guide to product management with peter bogart johnson episode 17 august 14th 2023 ways of working peter bogart johnson was one of jane street s first program managers and helped bring the art of pming where that p variously stands for project product or some blend of the two to the company at large he s also a poet and the former editor of a literary magazine in this episode peter and ron discuss the challenge of gaining trust as an outsider how do you teach teams a new way of doing things while preserving what s already working the key peter says is you listen a good pm is an anthropologist they also discuss how paying down technical debt isn t something you do instead of serving customers what jane street looks for in pm candidates and how to help teams coordinate in times of great change go to episode page the future of programming with richard eisenberg episode 16 may 17th 2023 programming languages richard eisenberg is one of the core maintainers of haskell he recently joined jane street s tools and compilers team where he hacks on the ocaml compiler he and ron discuss the powerful language feature that got him into pl design in the first place dependent types and its role in a world where ais can somewhat competently write your code for you they also discuss the differences between haskell and ocaml the perils of trying to make a language that works for everybody and how best a company like jane street can collaborate with the open source community go to episode page swapping the engine out of a moving race car with ella ehrlich episode 15 september 12th 2022 systems design ella ehrlich has been a developer at jane street for close to a decade during much of that time she s worked on gord one of jane street s oldest and most critical systems which is responsible for normalizing and distributing the firm s trading data ella and ron talk about how to grow and modernize a legacy system without compromising uptime why game developers are the musicians of software and some of the work jane street has done to try to hire a more diverse set of software engineers go to episode page state machine replication and why you should care with doug patti episode 14 april 20th 2022 systems design doug patti is a developer in jane street s client facing tech team where he works on a system called concord that undergirds jane street s client offerings in this episode doug and ron discuss how concord which has state machine replication as its core abstraction helps jane street achieve the reliability scalability and speed that the client business demands they ll also discuss doug s involvement in building a successor system called aria which is designed to deliver those same benefits to a much wider audience go to episode page memory management with stephen dolan episode 13 january 5th 2022 programming languages performance stephen dolan works on jane street s tools and compilers team where he focuses on the ocaml compiler in this episode stephen and ron take a trip down memory lane discussing how to manage computer memory efficiently and safely they consider trade offs between reference counting and garbage collection the surprising gains achieved by prefetching and how new language features like local allocation and unboxed types could give ocaml users more control over their memory go to episode page what is an operating system with anil madhavapeddy episode 12 november 3rd 2021 programming languages systems design anil madhavapeddy is an academic author engineer entrepreneur and ocaml aficionado in this episode anil and ron consider the evolving role of operating systems security on the internet and the pending arrival at last of ocaml 5 0 they also discuss using raspberry pis to fight climate change the programming inspiration found in british pubs and on moroccan beaches and the time anil went to a party got drunk and woke up with a job working on the mars polar lander go to episode page building a ui framework with ty overby episode 11 october 6th 2021 ui ux systems design ty overby is a programmer in jane street s web platform group where he works on bonsai our ocaml library for building interactive browser based uis in this episode ty and ron consider the functional approach to building user interfaces they also discuss ty s programming roots in neopets what development features they crave on the web the unfairly maligned css and why excel is arguably the greatest programming language ever developed go to episode page writing technically with james somers episode 10 september 1st 2021 ways of working james somers is jane street s writer in residence splitting his time between english and ocaml and helping to push forward all sorts of efforts around knowledge sharing at jane street in this episode james and ron talk about the role of technical writing in an organization like jane street and how engineering software relates to editing prose go to episode page more signals threads coming soon with ron minsky august 24th 2021 signals threads is back and we have a fun season of topics lined up we hope you ll join us the first episode drops september 1st an inside look at jane street s tech internship with jeanne van briesen matt else and grace zhang episode 9 november 4th 2020 ways of working in this week s episode the season 1 finale ron speaks with jeanne matt and grace three former tech interns at jane street who have returned as full timers they talk about the experience of being an intern at jane street the types of projects that interns work on and how they ve found the transition to full time work go to episode page building a functional email server with dominick lobraico episode 8 october 28th 2020 systems design despite a steady stream of newcomers email still reigns supreme as the chief communication mechanism for the information age at jane street it s just as critical as anywhere but there s one difference the system at the heart of our email infrastructure is homegrown this week ron talks to dominick lobraico an engineer working on jane street s technology infrastructure about how and why we built mailcore an email server written and configured in ocaml they delve into questions around how best to represent the configuration of a complex system when you should build your own and when you shouldn t and the benefits of bringing a code focused approach to solving systems problems go to episode page language design with leo white episode 7 october 21st 2020 programming languages equal parts science and art programming language design is very much an unsolved problem this week ron speaks with leo white from jane street s tools compilers team about cutting edge language features future work happening on ocaml and jane street s relationship with the broader open source community the conversation covers everything from the paradox of language popularity to advanced type system features like modular implicits and dependent types listen in no programming languages phd required go to episode page clock synchronization with chris perl episode 6 october 14th 2020 systems design clock synchronization keeping all of the clocks on your network set to the correct time sounds straightforward our smartphones sure don t seem to have trouble with it next keep them all accurate to within 100 microseconds and prove that you did now things start to get tricky in this episode ron talks with chris perl a systems engineer at jane street about the fundamental difficulty of solving this problem at scale and how we solved it go to episode page python ocaml and machine learning with laurent mazare episode 5 october 7th 2020 machine learning programming languages a conversation with laurent mazare about how your choice of programming language interacts with the kind of work you do and in particular ab...