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Java software developer Jobs in Welland, ON

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Java software developer • welland on

Last updated: 30+ days ago
Remote Senior Java Engineer - AI Trainer

Remote Senior Java Engineer - AI Trainer

SuperAnnotatePort Colborne, Ontario, CA
Remote
Full-time
As a Senior Java Engineer, you will work remotely on an hourly paid basis to review AI-generated Java code, architectural solutions, and technical explanations, as well as generate high-quality ref...Show moreLast updated: 30+ days ago
Senior Product Manager (GTM Strategy)

Senior Product Manager (GTM Strategy)

mParticleRemote, Ontario Canada
Remote
Full-time
The Successful candidate will : .Product GTM : Spearhead product launches with meticulously planned go-to-market strategies, ensuring seamless orchestration and measurable impact.Drive Product Adoptio...Show moreLast updated: 30+ days ago
  • Promoted
Principal Architect : Lead Design, Mentor & Delivery

Principal Architect : Lead Design, Mentor & Delivery

ADPNiagara Regional Municipality (Fonthill), ca
Full-time
A leading human capital management services provider is seeking a Principal Architect in Niagara-on-the-Lake.This role involves designing architectural solutions and guiding teams in implementing t...Show moreLast updated: 30+ days ago
Online Survey Researcher (Work-at-Home)

Online Survey Researcher (Work-at-Home)

FocusGroupPanelNiagara Falls, Ontario, Canada
Remote
Part-time
Work From Home, Entry Level Data Entry Clerk As A Research Participant.We are looking for people who want to work remotely from home. You'll need an Internet connection and a mobile device or comput...Show moreLast updated: 30+ days ago
Senior Developer (Data)

Senior Developer (Data)

Farm Credit CanadaVarious FCC office s in Ontario may be considered
Full-time
Salary Range (plus eligible to receive a performance based incentive, applicable to position) : .Experienced data developer needed. Using your experience in Agile Scrum methodology and AWS data pipel...Show moreLast updated: 30+ days ago
iOS Developer Intern / Co-op (Remote)

iOS Developer Intern / Co-op (Remote)

TorontoJobsREMOTE, ON
Remote
Part-time +1
OS Developer Intern / Co-op (Remote).Guhuza is seeking an iOS Developer to join our remote team and contribute to the development of our iOS app. As an iOS Developer at Guhuza, you will play a cruci...Show moreLast updated: 30+ days ago
JPC -1459 - Senior Software Engineer

JPC -1459 - Senior Software Engineer

ITS GlobalOntario
Full-time
Our client is looking for a Senior Software Engineer to join their team.The ideal candidate should have : .Has 8+ years of experience developing software, with a track record of successful production...Show moreLast updated: 30+ days ago
Application Support Analyst

Application Support Analyst

Juventus ConsultingOntario
Full-time
We are looking for an Application Developer both Java and.The split would be 75% Java work and 25%.This is 1 year contract, work could be out of Toronto or Waterloo. The required candidate will be a...Show moreLast updated: 30+ days ago
iOS Engineer III, Feeds / Business Experience

iOS Engineer III, Feeds / Business Experience

redditRemote, Ontario, Canada
Remote
Full-time
Reddit is a community of communities.It’s built on shared interests, passion, and trust and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote...Show moreLast updated: 30+ days ago
Accounting Technician

Accounting Technician

RM Bookkeeping & Accounting ServicesWelland, ON, Canada
Full-time +1
We are a fast-growing cloud based firm based in Ontario that helps small and medium sized businesses make better financial and management decisions. We’re looking for Accounting Technicia...Show moreLast updated: 30+ days ago
Web Developer

Web Developer

CB CanadaNiagara Falls, Ontario, Canada
Permanent
Our client designs, markets & sells highest performance consumer electronics that are smart, simple and stylish.From high fidelity turntables to wireless video connectivity systems, they create inn...Show moreLast updated: 30+ days ago
Controller

Controller

Robert HalfNiagara Region : Thorold, Pelham, Fort Erie, Pt Colborne, ON, CA
Permanent
Quick Apply
We are looking for a dedicated Controller to oversee financial operations within our client's manufacturing facility in the Niagara, Ontario region. The ideal candidate will manage accounting functi...Show moreLast updated: 30+ days ago
Intermediate Programmer Analyst

Intermediate Programmer Analyst

Medavie Blue CrossON, CA
Full-time +1
What makes us a different kind of employer?.As a national health solutions partner, Medavie is committed to improving the wellbeing of Canadians — and in our digital-first culture, technology is ke...Show moreLast updated: 30+ days ago
  • Promoted
Chief Information Officer — Digital Strategy & Services

Chief Information Officer — Digital Strategy & Services

Avanti Software Inc.Welland, Niagara Region, Canada
Full-time
A municipal government organization in the Niagara Region is seeking a Chief Information Officer to lead its IT operations and strategic initiatives. This role includes overseeing the execution of t...Show moreLast updated: 30+ days ago
Building Manager Live-IN

Building Manager Live-IN

Chad Management GroupWelland, ON, Canada
Full-time
Our Client is a very prestigious Property Developer in the Toronto area.We are Looking for a Live in Building Manager Couple to Join this team. Familiar with all aspects of building operation.Strong...Show moreLast updated: 30+ days ago
Remote Foreign Exchange Trader Job in Cat Lake, ON | Part Time

Remote Foreign Exchange Trader Job in Cat Lake, ON | Part Time

Maverick TradingCat Lake, Kenora District, ON P0V, Canada
Remote
Part-time
Remote Foreign Exchange Trader Job at Maverick Trading.Maverick Trading, a 26-year old proprietary trading firm is looking to hire experienced and entry-level equity and equity and option traders.W...Show moreLast updated: 30+ days ago
L2_Deskside Support

L2_Deskside Support

Tata Consultancy ServicesOntario, CA
Full-time
Responsible for providing Tier 2 (L2) support to customers by researching, diagnosing, troubleshooting issues, and resolving incidents that can not be resolved by Tier 1 (L1) and providing support ...Show moreLast updated: 30+ days ago
Autobody Collision Estimator

Autobody Collision Estimator

CSN CollisionNiagara Falls, ON, Canada
Full-time
CSN Collision safely repairs more than 200,000 vehicles a year helping Canadians get back on the road with the trust and comfort of knowing their vehicle has been returned to like new condition.Sin...Show moreLast updated: 30+ days ago
Lab Bench Operator

Lab Bench Operator

The Burke GroupNiagara, ON
Full-time
Successful completion of a Community College Diploma in Chemistry (or related Chemical Technology Program) with relevant experience preferred OR completion of a High Scholl diploma coupled with a m...Show moreLast updated: 30+ days ago
People also ask
Remote Senior Java Engineer - AI Trainer

Remote Senior Java Engineer - AI Trainer

SuperAnnotatePort Colborne, Ontario, CA
30+ days ago
Job type
  • Full-time
  • Remote
Job description

As a Senior Java Engineer, you will work remotely on an hourly paid basis to review AI-generated Java code, architectural solutions, and technical explanations, as well as generate high-quality reference implementations and reasoning steps. You will assess solutions for accuracy, clarity, and adherence to the prompt; identify errors in logic, performance, or design; fact-check technical information; write high-quality explanations and model solutions that demonstrate correct methods; and rate and compare multiple AI responses based on correctness and reasoning quality.

This fully remote, hourly paid contractor role is with SME Careers, a fast-growing AI data services company and subsidiary of SuperAnnotate that provides AI training data to many of the world’s largest AI companies and foundation model labs, where your Java expertise will directly help improve the world’s premier AI models.

Key Responsibilities :

  • Develop AI Training Content : Create detailed prompts in various topics and responses to guide AI learning, ensuring the models reflect a comprehensive understanding of diverse subjects.
  • Optimize AI Performance : Evaluate and rank AI responses to enhance the model's accuracy, fluency, and contextual relevance.
  • Ensure Model Integrity : Test AI models for potential inaccuracies or biases, validating their reliability across use cases.

Your Profile :

  • Bachelor’s degree or higher in Computer Science, Software Engineering, or a closely related technical field.
  • 5+ years of professional software engineering experience, with significant hands-on work in Java on production systems.
  • Deep understanding of core Java, concurrency primitives, and the Java Collections Framework.
  • Extensive experience building and maintaining backend services using Spring or Spring Boot, REST APIs, and microservice architectures.
  • Strong grasp of software design principles, system design, and performance optimization in distributed Java systems.
  • Minimum C1 English proficiency (written and spoken), with the ability to write clear technical explanations and follow detailed English-language guidelines.
  • Comfort working with modern engineering tooling such as Git, CI / CD pipelines, automated testing frameworks, and containerization technologies.
  • Demonstrated experience conducting thorough code reviews and providing structured, constructive feedback to other engineers.
  • Previous experience with AI data training, annotation, or evaluating AI-generated technical content is a strong plus.
  • Highly detail-oriented and systematic, with a methodical approach to evaluating reasoning quality and identifying subtle issues in Java solutions.