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React developer Jobs in Old toronto, ON

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React developer • old toronto on

Last updated: 16 hours ago
Software Developer

Software Developer

Mier Human Capital MoreoverToronto, ON
Permanent +1
Mier Temporary Staffing is hiring!.Job Type: Temporary - Permanent.Build System Connectivity & Data Collection.Design and implement connectors to pull key datasets from multiple systems (APIs, data...Show moreLast updated: 23 days ago
EPM Developer

EPM Developer

StantecToronto, ON
Full-time +1
At Stantec, we have some of the world’s leading professionals passionate about enabling our business to be its best.Our business teams include finance, procurement, human resources, information tec...Show moreLast updated: 30+ days ago
Frontend Software Developer – React & WebGL

Frontend Software Developer – React & WebGL

NearSourceToronto, ON, Canada
Full-time
Quick Apply
Frontend Software Developer – React & WebGL.Hybrid (3 days remote), Toronto, Canada.NearSource is looking for a Frontend Software Developer to contribute to a next-generation dynamic user interface...Show moreLast updated: 23 days ago
Software Developer

Software Developer

Sync.comToronto, ON, CA
Full-time
Quick Apply
Sync is Canada’s largest cloud storage provider and a global leader in secure file sharing and document collaboration.We’re expanding into the enterprise market, and we need your help.Join us as we...Show moreLast updated: 30+ days ago
Integration Developer

Integration Developer

atQor (formerly bitscape)Toronto, Ontario, Canada
Full-time
Integration developers are responsible for the design, development and deployment of integrations between enterprise applications as well as other on premise and cloud-based third-party application...Show moreLast updated: 30+ days ago
RQ10329 React/ Elasticsearch Developer

RQ10329 React/ Elasticsearch Developer

Source CodeToronto, ON, Canada
Full-time
Quick Apply
RQ10329 React/ Elasticsearch Developer.Downtown, Toronto (onsite).Contract (1+ year long contract, with high possibility of extension).Ideally 3 + years' experience with Elasticsearch but flexible ...Show moreLast updated: 30+ days ago
Frontend Developer

Frontend Developer

InitiateToronto, ON, Canada
Remote
Full-time
Quick Apply
We are partnering with a market leading, Canadian online sportsbook and casino to hire an experienced.Reporting to the Director of Development, you will play a key role in building and enhancing hi...Show moreLast updated: 22 days ago
Full Stack Developer (React + Next.js)

Full Stack Developer (React + Next.js)

ScotiabankToronto, ON, CA
Full-time
Join a purpose driven winning team, committed to results, in an inclusive and high-performing culture.We’re looking for a Full Stack Developer to help build a modern, secure, and scalable web appli...Show moreLast updated: 15 days ago
Sr. React Native Engineer

Sr. React Native Engineer

Vivid SeatsToronto, Ontario, Canada
Full-time
You'll shape the architecture of Vivid Seats' flagship mobile app and the APIs powering it, working on the full cross-platform stack with real influence over product direction.You'll partner direct...Show moreLast updated: 9 days ago
Web developer

Web developer

MBLMNorth York, ON, CA
Permanent
Heures de travail: 30 to 40 hours per week.Private company, corporation or industry.Consult with clients to develop and document Website requirements.Design and integrate website related code.Deter...Show moreLast updated: 30+ days ago
Database Developer

Database Developer

DeluxeToronto, CA
Full-time +1
For the past century, Deluxe Entertainment Services Group has been committed to providing content owners and creators with the tools and talent they need to bring the most compelling and exciting s...Show moreLast updated: 17 days ago
React Developer

React Developer

FintrosToronto, Ontario, Canada
Full-time
A stealth new app created by Fintros AI is launching in September 2021.In less than 180 days, our app has attracted 150,000 jobs across 500+ companies.By 2023, our company will power the talent att...Show moreLast updated: 30+ days ago
Full-Stack Developer (React / GenAI / LLM Applications)

Full-Stack Developer (React / GenAI / LLM Applications)

Recrute ActionToronto, ON, ca
Full-time +2
Full-Stack Developer (React / GenAI / LLM Applications).Hybrid Toronto contract role in the insurance sector focused on developing AI-enabled digital applications using React or Vue, JavaScript/Typ...Show moreLast updated: 25 days ago
Senior/Team Lead Full Stack (Node.js/React) developer (Toronto, hybrid)

Senior/Team Lead Full Stack (Node.js/React) developer (Toronto, hybrid)

TechMagicToronto, hybrid, Ontario, Canada
Full-time
We are looking for a skilled Senior/Team Lead Full Stack (Node.React) developer with 5+ years of professional experience to join our project for working on enterprise-level project from the Canada....Show moreLast updated: 30+ days ago
iOS Developer

iOS Developer

Astra North Infoteck Inc.Toronto, ON, ca
Full-time
Hybrid (Tue-Thurs 8:30 PM – 5:00 PM EST).Digital : iOS Application Development~Agile Way of Working Experience Required: 6-8.Develop and maintain iOS applications using Swift and Objective-C.Collab...Show moreLast updated: 27 days ago
AI Developer, Full Stack (Python/React) II

AI Developer, Full Stack (Python/React) II

Intact Financial CorporationToronto, 700 University Avenue
Full-time
The salary range presented below is based on a 35-hour workweek and would represent a majority of diffferent candidate profiles.However, we encourage candidates who may fall outside of this range t...Show moreLast updated: 2 days ago
Developer

Developer

LancesoftToronto, ON, CA
Full-time
Quick Apply
Location Address: Hybrid - 44 King Street W 10th Floor –1 days/week (Wednesdays–subject to change).Contract Duration: May to Oct 2026 –approx.Schedule Hours: 9am-5pm Monday-Friday;standard 37.As pa...Show moreLast updated: 2 days ago
  • New!
FULL STACK DEVELOPER- PYTHON AND REACT JS

FULL STACK DEVELOPER- PYTHON AND REACT JS

Royal Bank of Canada>TORONTO, Canada
Full-time
SENIOR FULL STACK DEVELOPER- REACT.The Manager of Automated Compliance Solutions (ACS) is responsible for developing, planning, directing and coordinating application development and maintenance ac...Show moreLast updated: 16 hours ago
People also ask
Software Developer

Software Developer

Mier Human Capital MoreoverToronto, ON
23 days ago
Job type
  • Permanent
  • Temporary
Job description

Mier Temporary Staffing is hiring!

Job Title: Software Developer

Location: Toronto, ON
Job Type: Temporary - Permanent
Salary: $$
Work Model: Hybrid


This posting is for an existing vacancy.

Our client in Toronto, ON is actively looking for a Software Developer to join their team.
Position Description: ) Build System Connectivity & Data Collection
  • Design and implement connectors to pull key datasets from multiple systems (APIs, databases or file drops).
  • Normalize incoming data into a consistent model for comparisons.
  • Implement robust retry and error-handling for integrations.
) Comparison Engine / Rules & Exception Detection
  • Build a configurable rules engine to compare records/aggregates across systems: Field-to-field comparisons (, store ID, business date, sales totals) Cross-system completeness checks (expected records present) Tolerance-based thresholds (, variance > X) Time-window checks (, "last updated” SLA)
  • Produce clear "diff” outputs: what differs, by how much, and suggested root-cause hints (, mapping issues, late loads).
) Web Platform (UI + APIs)
  • Build a web UI that supports: Overview health dashboard Discrepancy explorer (filters by system/store/date/type/severity) Issue detail pages with traceability (source payload snapshot / correlation IDs) Admin configuration for rules, thresholds, alert recipients (role-based)
  • Build backend APIs to serve the UI and support automation.
) Alerting, Observability, and Operations
  • Implement alert routing (email/Teams) with deduplication, escalation
  • Add monitoring: logs, metrics, traces, dashboards, and runbooks for on-call support.
  • Create audit trails for rule changes and alert acknowledgements.
) Security & Governance
  • Implement authentication/authorization (SSO preferred), secrets management, and least-privilege access.
Skills & Qualifications:
  • + years building production software in .NET (C) / Java/ Python Web UI experience Strong API integration experience (REST/JSON; auth patterns such as OAuth where applicable) Solid SQL skills and data modeling (relational + optionally a document store) Experience designing reliable background jobs/workers (schedulers, queues, retries, DLQs) Automated testing (unit + integration) Practical experience with observability (structured logging, metrics, tracing)

If you meet the above qualifications, please submit your resume. Please note that while we appreciate all applications, only those being considered will be contacted.