Senior Full Stack Developer Jobs in Mississauga, ON

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Senior Front End Developer

Toronto, Ontario
onsite
Temporary
78.85 - 91.3 CAD / Hourly
We are looking for a Senior Front End Developer to join a collaborative design systems team supporting enterprise web applications in Ontario. This long-term contract position focuses on building scalable, accessible React components that help create a consistent user experience across a broad product portfolio. The successful candidate will work closely with designers, researchers, product leaders, and accessibility specialists to deliver high-quality front-end solutions that balance usability, performance, and maintainability. Responsibilities: • Build, enhance, and support reusable React components that strengthen consistency across multiple web products. • Translate design concepts into production-ready interfaces while maintaining close alignment with established UX standards. • Embed accessibility best practices into front-end development to help ensure components meet recognized compliance expectations. • Work with cross-functional partners to define needs, clarify priorities, and deliver solutions within an evolving development environment. • Improve component libraries through thoughtful documentation, clean code structure, and patterns that encourage efficient adoption by product teams. • Take part in peer reviews and contribute to development standards that promote quality, reliability, and maintainable code. • Apply insights from user research and product feedback to refine component behaviour and overall usability. • Coordinate effectively with globally distributed colleagues and adjust working style as needed to support collaboration across time zones.
2026-09-28T00:00:00Z

Senior Director Engineering

Toronto, Ontario
onsite
Contract / Temporary to Hire
123.5 - 143 CAD / Hourly
We are looking for an accomplished technology leader to guide the growth and performance of our engineering presence in Toronto, Ontario. This contract opportunity is suited to someone who can shape long-term technical direction, strengthen delivery practices, and build an inclusive, high-performing team culture. The successful candidate will connect enterprise priorities with local execution across software engineering, platform capabilities, quality practices, and data- and AI-enabled initiatives. Responsibilities: • Set the strategic direction for the Toronto engineering organization, including team structure, capability development, and an operating model that supports future growth. • Lead delivery for locally based engineering teams by driving reliable outcomes across timelines, product quality, service stability, and business commitments. • Strengthen development standards by advancing modern practices in code quality, automated testing, deployment pipelines, monitoring, and technical documentation. • Provide senior technical guidance on the practical and responsible use of AI and machine learning tools within engineering workflows, products, and internal platforms. • Build and mentor leadership talent by recruiting, coaching, and retaining managers and senior technical contributors across engineering, quality, DevOps, and site reliability functions. • Partner with cross-functional leaders in architecture, security, infrastructure, finance, and people operations to align delivery plans, workforce planning, and governance expectations. • Foster an engaged and inclusive workplace culture that encourages accountability, collaboration, continuous improvement, and psychological safety. • Oversee operational excellence through effective incident response, environment management, on-call readiness, risk controls, and performance metric tracking. • Manage engineering budgets for people, tools, and technology investments while monitoring productivity, quality indicators, and service outcomes. • Represent the Toronto development centre in senior leadership discussions and ensure local practices remain aligned with broader organizational standards.
2026-09-28T00:00:00Z

Software Engineer (Java)

Toronto, Ontario
onsite
Permanent
100000 - 130000 CAD / Yearly
We are helping a growing and highly innovative financial services organization with a new Java Engineer to join their Payments Technology team. This is an exciting opportunity for a developer who enjoys solving complex problems, wearing multiple hats, and gaining exposure to a broad range of technologies, projects, and business functions. You'll work closely with senior leaders, product teams, operations, compliance, and engineering stakeholders to help build and enhance critical payment platforms supporting ACH, Wires, Real-Time Payments (RTP), FedNow, and other modern payment networks. We're looking for someone who is resourceful, entrepreneurial, curious, and excited by the opportunity to make a visible impact within a fast-moving environment. What you will do and how you will make an impact …<ul><li>You will play a key role in the development and evolution of modern payment processing platforms that support critical banking and financial transactions.</li></ul>In this position, you will:<ul><li>Design, develop, and maintain backend applications and APIs using Java and Spring Boot.</li><li>Work across the full software development lifecycle, from requirements gathering and design through implementation, testing, deployment, and production support.</li><li>Partner with Product, Operations, Compliance, QA, and engineering teams to deliver secure and scalable payment solutions.</li><li>Develop integrations with banking partners, third-party providers, and internal systems.</li><li>Support highly reliable, secure, and compliant transaction processing platforms.</li><li>Participate in architecture discussions, code reviews, troubleshooting, and continuous improvement initiatives.</li><li>Contribute to monitoring, observability, and operational excellence efforts alongside DevOps and production support teams.</li></ul>Why we are excited about you ... <ul><li>You thrive in environments where you can take ownership, solve problems independently, and continuously learn new technologies and business domains.</li><li>You are naturally curious and enjoy exploring how complex systems work.</li><li>You take initiative and can navigate ambiguity with confidence.</li><li>You understand financial services, and want exposure to modern payments technology.</li></ul>
2026-09-25T00:00:00Z

Senior Product Designer

Toronto, Ontario
onsite
Temporary
78.85 - 91.3 CAD / Hourly
We are looking for a Senior Product Designer to join a collaborative design team supporting enterprise software experiences in Burlington, Ontario. This Long-term Contract opportunity will focus on strengthening a design system, shaping component standards, and improving consistency across a broad product ecosystem. The role works closely with product, engineering, accessibility, and research partners to create scalable design solutions that balance usability, visual quality, and technical feasibility. Responsibilities: • Shape and refine design system foundations, reusable components, and interaction patterns that support consistent product experiences. • Partner with product managers, developers, and subject matter experts to define design needs, clarify priorities, and deliver practical solutions. • Build and maintain a robust Figma component library and related assets that enable designers to work more efficiently and consistently. • Coordinate design work with development timelines, ensuring deliverables are well planned and aligned with product release cycles. • Contribute to research activities by gathering insights, reviewing findings, and turning observations into meaningful design improvements. • Work alongside front-end engineers to support strong alignment between design assets and coded components. • Collaborate with accessibility stakeholders to help ensure components and patterns meet WCAG AA expectations. • Guide product teams in adopting the design system by promoting best practices and supporting implementation across the organization.
2026-09-28T00:00:00Z

Senior Product Designer

Burlington, Ontario
remote
Temporary
80 - 90 CAD / Hourly
We are looking for a Senior Product Designer to join a Long-term Contract opportunity based in Ontario. In this role, you will guide design work across several product streams, turning complex challenges into intuitive, refined experiences that support both user needs and business goals. You will collaborate closely with product and engineering partners, apply strong UX and UI expertise, and use AI-enabled tools to speed up exploration and insight gathering while relying on sound design judgement to shape final outcomes. This is a 6 month contract to start located in Toronto, Ontario. Responsibilities:• Own design end to end across multiple concurrent initiatives — from upstream problem framing and research through to high-fidelity UI, delivery and handoff • Shape briefs, not just respond to them — identifying what the real problem is before the team has named it, and influencing direction before decisions are locked • Build trust quickly with product and engineering partners — demonstrating through the quality and pace of your work that good design makes outcomes better • The bar is rising, but quality is still the differentiator. You’ll use AI as a core part of how you design — prototyping faster, synthesizing research at scale, exploring more directions in less time — while leading with design judgement that AI can't replace • Produce interfaces that are visually considered, interaction-sound, accessible and aligned to design system standards — you know that UI is where the experience becomes real for users • Contribute to the team's case study output — documenting what worked, what didn't, and what it proved about design's value • Raise the capability of the team around you through pairing, critique and direct feedback — you are a multiplier, not just a contributor
2026-09-25T00:00:00Z

Senior Project Manager

Toronto, Ontario
onsite
Temporary
70 - 80 CAD / Hourly
We are looking for a Senior Project Manager/ Scrum Master to lead engineering delivery for a hospitality-focused organization in Toronto, Ontario. This Long-term Contract position is ideal for a hands-on leader who can guide teams through complex product and platform initiatives while fostering strong collaboration across technical and business groups. The successful candidate will bring experience in agile software delivery, platform oversight, and modern application development across web, mobile, and cloud environments. The ideal candidate will have strong experience working with the Agile Methodology. This is a long term contract role located in North York, Ontario - 3 days in office. Responsibilities:• Guide and support software engineers across multiple initiatives, creating a team environment focused on accountability, growth, and high-quality delivery.• Oversee end-to-end execution of application development projects, from early planning and prioritization through launch and post-release stabilization.• Manage platform operations alongside development activities, including production oversight, alert response, and service reliability monitoring.• Partner with stakeholders across business and technical functions to align priorities, communicate progress, and address risks in a timely manner.• Provide regular coaching, performance feedback, and career development support through one-on-one meetings and structured development planning.• Contribute to hiring efforts by participating in recruitment, interviewing, and onboarding for engineering talent.• Promote agile practices, engineering standards, and continuous improvement to strengthen delivery outcomes across teams.• Coordinate complex cross-platform work involving distributed teams, varied priorities, and collaboration across multiple time zones.
2026-09-25T00:00:00Z

Senior Service Designer

Burlington, Ontario
remote
Temporary
75 - 85 CAD / Hourly
We are looking for a Senior Service Designer to join a Long-term Contract opportunity based in Burlington, Ontario. In this role, you will shape connected experiences across products, platforms, and customer touchpoints by bringing a holistic view to complex design challenges. You will work across a range of initiatives, partnering with cross-functional teams to improve how users discover, adopt, and continue engaging with digital solutions. This position is ideal for someone who combines strategic service design expertise with strong facilitation skills and a clear understanding of how experience improvements support business growth. Responsibilities:<ul><li>Drive service design initiatives across multiple digital experiences, translating complex challenges into structured journeys, blueprints, and practical recommendations for delivery teams.</li><li>Influence project direction early by helping define briefs, clarifying problem statements, and guiding senior stakeholders toward effective design decisions.</li><li>Identify opportunities where improved service experiences can strengthen customer acquisition, product adoption, and long-term engagement.</li><li>Incorporate AI tools into day-to-day design work to speed up research synthesis, uncover patterns, and highlight high-value opportunities while applying sound human judgement.</li><li>Facilitate workshops, collaborative sessions, and design sprints that help stakeholders align on priorities and move toward clear next steps.</li><li>Produce strong supporting evidence for each engagement by documenting outcomes, insights, and examples that demonstrate the value of design partnership.</li><li>Strengthen team capability by sharing methods, encouraging connected thinking, and contributing to higher standards across product and digital design practices.</li><li>Work across short- and long-range initiatives, leaving behind scalable frameworks, clear documentation, and service improvements that continue beyond the engagement.</li></ul>
2026-09-28T00:00:00Z

7 results for Senior Full Stack Developer in Mississauga, ON