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uber

19 indexed repositories · View on GitHub

RIBs
Uber's cross-platform mobile architecture framework - Android Repository

Kotlin · 7941 stars
kraken
P2P Docker registry capable of distributing TBs of data in seconds

Go · 6748 stars
h3
Hexagonal hierarchical geospatial indexing system

C · 6544 stars
causalml
Uplift modeling and causal inference with machine learning algorithms

Python · 6000 stars
NullAway
A tool to help eliminate NullPointerExceptions (NPEs) in your Java code with low build-time overhead

Java · 4106 stars
ADR
ADR secures enterprise AI agents through observability, security benchmarking, and threat detection. Deployed at Uber.

Python · 1575 stars
h3-js
h3-js provides a JavaScript version of H3, a hexagon-based geospatial indexing system.

JavaScript · 1085 stars
h3-py
Python bindings for H3, a hierarchical hexagonal geospatial indexing system

Python · 1038 stars
mockolo
Efficient Mock Generator for Swift

Swift · 886 stars
motif
A simple DI API for Android / Java

Kotlin · 537 stars
grafana-dash-gen
grafana dash dash dash gen

TypeScript · 528 stars
tchannel-go
Go implementation of a multiplexing and framing protocol for RPC calls

Go · 513 stars
h3-go
Go bindings for H3, a hierarchical hexagonal geospatial indexing system

Go · 452 stars
hermetic_cc_toolchain
Bazel C/C++ toolchain for cross-compiling C/C++ programs

Starlark · 402 stars
h3-java
Java bindings for H3, a hierarchical hexagonal geospatial indexing system

Java · 333 stars
rides-android-sdk
Uber Rides Android SDK (beta)

Java · 293 stars
submitqueue
SubmitQueue is a high-performance speculative merge queue that keeps your trunk consistently green at scale.

Go · 225 stars
RIBs-iOS
RIBs for iOS

Swift · 193 stars
tango
Tango provides a way to compute the changed targets for a given base and head and conflict graph. Uber's SubmitQueue relies on it to get ...

Go · 14 stars

Beginner friendly Everything

Open All

Handle fields in JDK javac plugin Open

jdk-models jspecify

Difficulty 3/5 1-2 days Newbie friendliness 55/100

uber/NullAway#1862 · Opened Sep 19, 2026
Dependency Dashboard Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

uber/NullAway#1859 · Opened Sep 18, 2026
Allow nullable type arguments in wildcard-typed array stores Open

uber/NullAway#1856 · 1 assignee · Opened Sep 17, 2026
JSpecify: nullable upper bound is lost when reading a generic field through ? super Open

false negative jspecify

Difficulty 4/5 3-5 days Newbie friendliness 55/100

uber/NullAway#1854 · 1 comment · Opened Sep 17, 2026
gridRing silently returns wrong results when the ring encircles pentagons without touching one Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

uber/h3#1241 · Opened Sep 17, 2026
False positive with HandleWildcardGenerics on a self-referential wildcard bound read from another module Open

jspecify

Difficulty 4/5 3-5 days Newbie friendliness 48/100

uber/NullAway#1851 · 3 comments · 1 reaction · Opened Sep 16, 2026
Stop relying on mutable WildcardType.bound outside validated contexts Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

uber/NullAway#1850 · Opened Sep 16, 2026
JSpecify mode: false positive passing null to `Consumer<@Nullable V>` obtained through a wildcard receiver Open

false positive jspecify

Difficulty 4/5 3-5 days Newbie friendliness 68/100

uber/NullAway#1847 · Opened Sep 15, 2026
JSpecify mode: NullPointerException when passing a value read through a `? super` wildcard receiver Open

crash jspecify

Difficulty 3/5 1-2 days Newbie friendliness 72/100

uber/NullAway#1846 · Opened Sep 15, 2026
Error to import causal forest regressor Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

uber/causalml#1048 · 1 comment · Opened Sep 10, 2026
mape silently returns NaN when all targets are near-zero (empty filtered slice) Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

uber/causalml#1047 · Opened Sep 10, 2026
Avoid stale wildcard bounds after javac supertype inspection Open

uber/NullAway#1840 · 1 assignee · Opened Sep 10, 2026
Support nullability inference for generic constructors in diamond calls Open

uber/NullAway#1825 · 1 comment · 1 assignee · Opened Sep 8, 2026
JSpecifyExperimental: false positive for addAll with ? element type Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

uber/NullAway#1822 · 5 comments · Opened Sep 7, 2026
GradientBoostedPropensityModel early-stopping split ignores random_state and is not stratified Open

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

uber/causalml#1045 · Opened Sep 4, 2026
[JSpecifyExperimental] False positive `dereferenced expression is @Nullable` in Stream pipeline after `Class::cast` Open

false positive jspecify

uber/NullAway#1808 · 1 comment · 1 reaction · 1 assignee · Opened Sep 3, 2026
Better reason about maps with `@Nullable` values in JSpecify mode Open

false negative jspecify

Difficulty 3/5 1-2 days Newbie friendliness 45/100

uber/NullAway#1805 · Opened Sep 3, 2026
Nullability of java.util.stream.Collectors.partitioningBy Open

enhancement false positive

Difficulty 3/5 1-2 days Newbie friendliness 68/100

uber/NullAway#1797 · 1 comment · Opened Sep 2, 2026
Fails to build gawk on macOS with hermetic_cc_toolchain Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

uber/hermetic_cc_toolchain#265 · 1 comment · Opened Sep 1, 2026
Generic method inference differs between source and bytecode before JDK 17.0.19 Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

uber/NullAway#1791 · 6 comments · Opened Aug 31, 2026
Inference failure calling unmarked method Open

bug jspecify

Difficulty 4/5 3-5 days Newbie friendliness 50/100

uber/NullAway#1790 · 1 comment · Opened Aug 30, 2026
Migrate to Publish to BCR actions workflow Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

uber/hermetic_cc_toolchain#264 · Opened Aug 30, 2026
JSpecifyExperimental: Support smart cast for Class.getAnnotation after Class.isAnnotationPresent check Open

lowpriority

Difficulty 3/5 1-2 days Newbie friendliness 68/100

uber/NullAway#1766 · 3 comments · Opened Aug 28, 2026
h3.grid_ring fails for non-pentagon root cells Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

uber/h3-py#503 · 4 comments · Opened Aug 27, 2026
Proguard rules for Android release builds Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

uber/h3-java#215 · Opened Aug 26, 2026
Remove `AccessPathNullnessAnalysis` from context and instead just have it as an instance field of `NullAway` Open

cleanup

Difficulty 4/5 3-5 days Newbie friendliness 45/100

uber/NullAway#1738 · 1 comment · Opened Aug 24, 2026
JSpecify: false positive when a method returns `? extends T` and `T` has a `@Nullable` upper bound (support `NO_CHANGE` nullness operator better) Open

highpriority jspecify

Difficulty 4/5 3-5 days Newbie friendliness 62/100

uber/NullAway#1727 · 5 comments · Opened Aug 24, 2026
The int APIs pay ~18% of every scalar call for an identity `_out_scalar` wrapper Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

uber/h3-py#501 · Opened Aug 24, 2026
Look into call sites passing `null` for overridden method type where they should be consulting library models Open

jspecify

Difficulty 3/5 1-2 days Newbie friendliness 48/100

uber/NullAway#1724 · Opened Aug 23, 2026
fuzzerPolygonToCellsExperimentalNoHoles times out on master: out-of-range vertex latitude produces a huge bbox estimate Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

uber/h3#1225 · 1 comment · Opened Aug 20, 2026
cate_scoring default learner is oversized for its own per-fold, per-arm call pattern Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

uber/causalml#1037 · 1 comment · 1 reaction · Opened Aug 20, 2026
S-, T- and X-learner bootstrap confidence intervals are not reproducible Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 52/100

uber/causalml#1036 · 1 comment · Opened Aug 20, 2026
Normalize meta-learner random_state handling through check_random_state Open

refactoring

Difficulty 3/5 1-2 days Newbie friendliness 68/100

uber/causalml#1035 · 1 comment · Opened Aug 20, 2026
rlearner_score still requires outcome_learner while its siblings default to LightGBM Open

enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

uber/causalml#1034 · 1 comment · 1 reaction · Opened Aug 20, 2026
Proposal: Structured triage and provenance-aware component analysis for ADR detection Open

Difficulty 5/5 Over a week Newbie friendliness 32/100

uber/ADR#50 · 3 comments · Opened Aug 19, 2026
Publish a release containing x/h3go Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

uber/h3-go#136 · 1 comment · 2 reactions · Opened Aug 9, 2026
Check our handling of captured array types Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

uber/NullAway#1688 · Opened Aug 8, 2026
sklearn metadata routing: let `treatment` reach a learner inside a Pipeline Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 55/100

uber/causalml#986 · 7 comments · Opened Jul 31, 2026
Flip every signature to `(X, y, treatment, ...)` and delete the deprecation shim Open

enhancement refactoring

Difficulty 5/5 Over a week Newbie friendliness 25/100

uber/causalml#985 · 1 comment · Opened Jul 31, 2026
Adopt the scikit-learn `fit(X, y, treatment, ...)` argument order (v1.0 M1) Open

enhancement refactoring

Difficulty 5/5 Over a week Newbie friendliness 45/100

uber/causalml#980 · Opened Jul 31, 2026
unchecked signed accumulation in size calculation functions Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

uber/h3#1204 · 2 comments · Opened Jul 30, 2026
Outdated dependencies (vulnerabilities) Open

Difficulty 3/5 1-2 days Newbie friendliness 64/100

uber/h3#1203 · 4 comments · Opened Jul 30, 2026
Remove old workaround code for reading type use annotations from bytecode Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

uber/NullAway#1639 · Opened Jul 19, 2026
Kraken build-index tag API path traversal allows unauthenticated file existence/size/content disclosure outside the configured backend root Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

uber/kraken#645 · Opened Jul 18, 2026
JSpecify: infer diamond type-argument nullability from constructor arguments without a target type Open

jspecify

Difficulty 4/5 3-5 days Newbie friendliness 45/100

uber/NullAway#1633 · Opened Jul 17, 2026
Update Caffeine JMH benchmark once it builds again with NullAway Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

uber/NullAway#1629 · 5 comments · Opened Jul 15, 2026
submitqueue: port internal queue contracts to proto (submitqueue/core/messagequeue) Open

Difficulty 5/5 Over a week Newbie friendliness 32/100

uber/submitqueue#356 · 1 comment · Opened Jul 14, 2026
Downcasting (CastToNonNullMethod) does NOT propagate to the other occurrences of the same expression Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

uber/NullAway#1628 · 4 comments · Opened Jul 9, 2026
race in core/bazel Open

uber/tango#134 · 1 assignee · Opened Jun 30, 2026
Mockolo fails when source directory contains ".swift" suffix Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

uber/mockolo#356 · Opened Jun 25, 2026

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