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3 slides11:07EN
Jane Street· Feb 29, 2024How OCaml Locals Use a Separate StackRichard Eisenberg · Jane StreetA list example shows how region-scoped local values can avoid repeated garbage-collected allocations.Programming LanguagesSoftware engineering
5 slides23:25EN
Jane Street· Feb 20, 2024Richard Eisenberg: How OCaml Locals Reduce Garbage-Collected AllocationRichard Eisenberg · Jane StreetAn annotated list-processing example shows why locality must be preserved both when values are created and when functions consume them.Programming LanguagesSoftware engineering
3 slides22:27EN
Jane Street· Feb 7, 2024How OCaml Infers LocalityRichard Eisenberg · Jane StreetA look at local and global mode inference, module signatures, mode crossing for integers, and conversions between function types.Programming LanguagesSoftware engineering
5 slides15:17EN
Jane Street· Jan 31, 2024OCaml Locals, Modes, and SubmodingRichard Eisenberg · Jane StreetA worked explanation of how local and global modes control escaping values, and how those modes interact with function types.Programming LanguagesSoftware engineering
7 slides12:52EN
Jane Street· Jan 23, 2024OCaml Local Variables, Return Values and RegionsRichard Eisenberg · Jane StreetA worked example shows how `local_` and `exclave_` let a function accept a local value and return a local structure in its caller's region.Programming LanguagesSoftware engineering
4 slides8:52EN
Jane Street· Jan 5, 2024Introducing Local Parameters in OCamlRichard Eisenberg · Jane StreetA demonstration of how Jane Street's experimental local mode restricts escaping values and makes function interfaces easier to reason about.Programming LanguagesSoftware engineering
55:34EN
Jane Street· Nov 29, 2023Andrew Hunter on Performance Engineering for Low-Latency SystemsYaron Minsky, Andrew Hunter · Jane StreetWhy small optimizations pay at hyperscale, why trading latency is harder to measure, and how profiling, tracing, language design and hardware fit together.Software engineeringObservability & reliabilityProgramming Languages+2
1:02:17EN
Jane Street· Aug 15, 2023Peter Bogart-Johnson on Product Management, Poetry and ListeningYaron Minsky, Peter Bogart-Johnson · Jane StreetA poet and program manager explains how to earn a team’s trust, preserve what works and coordinate change without separating engineers from their users.Product ManagementCommunicationDeveloper productivity+1
2:20EN
Jane Street· Jul 3, 2023Sean on Hospitality and Office Life at Jane StreetSean · Jane StreetA member of Jane Street's London hospitality team describes fresh food, teamwork and the office events that bring colleagues together.Company CultureCareers
2:09EN
Jane Street· Jun 30, 2023Dan on Trading Desk Operations at Jane StreetDan · Jane StreetA London trading desk operations team member explains the variety of the role, what interviews seek, and why asking questions matters.CareersCompany Culture
2:21EN
Jane Street· Jun 30, 2023Varun on Software Engineering at Jane StreetVarun · Jane StreetA London-based developer describes useful technical foundations, OCaml training and team matching at Jane Street.Software engineeringCareersCompany Culture
2:48EN
Jane Street· Jun 8, 2023Kristen Answers Questions About Applying to Jane StreetKristen · Jane StreetA recruiter discusses application timing, campus roles, interview preparation and when to consider reapplying.HiringCareers
5:29EN
Jane Street· Jun 8, 2023Jason on Operations and Learning at Jane StreetJason · Jane StreetAn ETF operations manager describes the team’s responsibilities, how it handles mistakes and why new colleagues should ask why.CareersCompany CultureManagement
3:26EN
Jane Street· Jun 8, 2023Jorge on Hospitality and Making the Office Work at Jane StreetJorge · Jane StreetA New York hospitality team member describes preparing spaces, responding to daily needs and turning staff ideas into services.Company CultureFuture of Work
3:23EN
Jane Street· Jun 8, 2023Nitya on Training and Working as a Quantitative Trader at Jane StreetNitya · Jane StreetA trader on the New York international ETF desk describes the skills, training and collaboration involved in her work.CareersInvestingMathematics
5:49EN
Jane Street· May 23, 2023Ian on Software Engineering at Jane StreetIan · Jane StreetA London desk developer explains code review, OCaml training, intern projects and the feedback that comes from sitting near users.Software engineeringCode review & verificationDeveloper productivity+1
6:42EN
Jane Street· May 23, 2023Ezio on Linux Engineering and Collaboration at Jane StreetEzio · Jane StreetA London engineer explains his team’s infrastructure work, the Pride community group and why new hires should ask questions.Infrastructure & deploymentCompany CultureCareers+1
4:51EN
Jane Street· May 23, 2023Rachel on Trading Desk Operations at Jane StreetRachel · Jane StreetA London trading desk operations professional describes her daily work, collaboration, interview advice and experience of the firm's culture.CareersCompany Culture
59:38EN
Jane Street· May 18, 2023Richard Eisenberg on Dependent Types, OCaml, and AI-Assisted ProgrammingYaron Minsky, Richard Eisenberg · Jane StreetHow type systems can express correctness and performance, and why precise, readable specifications still matter when AI writes code.Software engineeringOpen-source ecosystemsCoding agents+1
4:24EN
Jane Street· May 10, 2023Lars on Trading and Learning at Jane StreetLars · Jane StreetA London trader describes the mix of research, monitoring and coding, and what new hires learn on the job.CareersEducationCompany Culture
5:06EN
Jane Street· May 10, 2023Jack on Hospitality and Office Life at Jane StreetJack · Jane StreetA London hospitality team member describes the work behind reception, travel and food service, and the culture he experiences at the office.Company CultureCareers
3:48EN
Jane Street· May 10, 2023Val on Software Engineering and Collaboration at Jane StreetVal · Jane StreetA London developer explains how colleagues teach new hires, review production code, and work across teams.Software engineeringCompany CultureCareers+1
3:03EN
Jane Street· May 10, 2023Rajan on IT, Collaboration and Learning at Jane StreetRajan · Jane StreetRajan describes the IT team's role supporting critical systems and the problem-solving skills he brought from studying chemistry.CareersCompany CultureInfrastructure & deployment
5:56EN
Jane Street· May 10, 2023Liora on Production Engineering at Jane StreetLiora Friedberg · Jane StreetA London production engineer describes incident response, project work, communication, and mentorship across the firm.Observability & reliabilityCareersCompany Culture
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