Languages · Learning guide

Java

Asked for in 13 job posts at 8 companies across Canada.

No job posts in Columbus yet, so we're showing all of Canada.

Demand over time

Job posts asking for Java, by week, last 16 weeks

in the last 4 weeks · 2 the 4 before

Job posts asking for this skill, by week
Week of	Job posts
Jul 20	0
Jul 27	0
Aug 3	0
Aug 10	1
Aug 17	0
Aug 24	0
Aug 31	3
Sep 7	0
Sep 14	1
Sep 21	0
Sep 28	0
Oct 5	1
Oct 12	1
Oct 19	1
Oct 26	1
Nov 2	4

Who's hiring

Companies with posts that ask for it

LLightspeed5
FFaire2
LLoopio1
ddatabricks1
ookta1
CCohere1
rrobotsandpencils1

Newest job posts

Learn next

Asked for in the same posts

Python AWS Google Cloud CI/CD TypeScript microservices Agile Ruby

Impact projects

Real problems in Canada, from public data. Build something that helps, and prove Java while you do it.

AI-suggestedUN SDG 13

Greenhouse gas emissions from industries and households in Alberta shifted from 265130 kilotonnes in 2009 to 271415 kilotonnes in 2023, impacting environmental regulators and local communities.

Greenhouse gas emissions from industries and households, Alberta (yearly, kilotonnes of CO2 equivalent)

Greenhouse gas emissions from industries and households, Alberta (yearly, kilotonnes of CO2 equivalent)
Period	Value
2009	265,130 kilotonnes
2010	273,996 kilotonnes
2011	285,154 kilotonnes
2012	290,700 kilotonnes
2013	300,770 kilotonnes
2014	303,757 kilotonnes
2015	295,870 kilotonnes
2016	278,406 kilotonnes
2017	291,330 kilotonnes
2018	291,567 kilotonnes
2019	292,346 kilotonnes
2020	271,006 kilotonnes
2021	275,547 kilotonnes
2022	273,636 kilotonnes
2023	271,415 kilotonnes

What to build: Build a Spring Boot command-line application in Java that ingests emission records and highlights high-impact sectors for environmental analysts.
How it practises Java: Practice object-oriented mapping and stream collectors in Java to parse and filter structured industry reports.
Proof to submit: Submit a public GitHub repository with unit tests and a working command-line demo.

Data: Statistics Canada table 38-10-0097-01

AI-suggestedUN SDG 8

The share of youth not in education, employment or training across Canada moved from 13.7% in 2010 to 13.27% in 2025, creating barriers for young adults entering the workforce.

Share of youth aged 15 to 24 not in education, employment or training, Canada (yearly)

Share of youth aged 15 to 24 not in education, employment or training, Canada (yearly)
Period	Value
2010	13.7%
2011	13.19%
2012	13.25%
2013	12.91%
2014	13.55%
2015	13.27%
2016	12.89%
2017	12.07%
2018	12.21%
2019	12.04%
2020	17.86%
2021	12.82%
2022	11.6%
2023	11.74%
2024	12.99%
2025	13.27%

What to build: Build a Java console application to track demographic metrics and generate support summaries for youth employment counselors.
How it practises Java: Practice writing robust data access objects and custom sorting algorithms in Java to process historical education and employment records.
Proof to submit: Submit a public GitHub repository containing automated test suites and sample program execution logs.

Data: UN SDG indicator 8.6.1

Best resources

Free, and hand-picked. Start with the first one.

Projects to prove it AI-suggested

Enterprise Payment Settlement Reconciler
A multi-threaded transaction processor that compares internal ledger records with external bank settlement files to catch discrepancies. It helps finance operations teams at fintech startups audit millions of daily transactions.
Healthcare HL7 Data Transformation Gateway
A microservice that ingests legacy electronic health record formats and converts them into modern JSON endpoints for clinic portals. It enables hospital engineering teams to integrate legacy medical records with modern applications.
Real-Time Fraud Prevention Rule Engine
A high-volume stream processor that evaluates transaction payloads against configurable fraud detection patterns in milliseconds. It provides risk assessment teams with instant decisioning on suspicious credit card authorizations.