{"id":3086791,"url":"https://alion.io/job/randstad-senior-software-developer-front-end","title":"Senior Software Developer - Front End","company":{"id":19351,"name":"Randstad Canada","domain":"randstad.ca","url":"https://alion.io/company/randstad","size_band":null,"is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Frontend","role_family":"Frontend","seniority":"senior","employment_type":"contractor","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Toronto, Canada"],"countries":["CA"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":62000,"max_usd":153000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":12},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"JavaScript","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"TypeScript","optional":false},{"name":"Web Components","optional":false}],"status":"live","first_seen_at":"2026-10-20T20:16:27Z","employer_posted_date":null,"last_verified_at":"2026-10-20T20:16:27Z","board_verified":false,"closed_at":null,"days_open":5,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":5},"description":"We are seeking an experienced Senior Software Developer - Front End to lead the front-end customization, user interface design, and web mapping development for enterprise spatial applications. In this role, you will translate complex technical systems specifications into responsive, accessible, and user-friendly web interfaces. Utilizing advanced GIS SDKs, JavaScript/TypeScript, and modern front-end frameworks, you will build and extend custom web map viewers, integrate spatial REST APIs, and optimize user experience across web platforms.\n\nLocation: Toronto, ON (Fully Onsite – 5 days/week required)\n\nDuration: 2-month contract.\n\nAdvantages\nSpecialized GIS SDK Stack: Direct hands-on experience with VertiGIS Studio, Geocortex, and ArcGIS Maps SDK for JavaScript.\n\nModern Web Framework Integration: Build responsive, accessible front-end interfaces using React, TypeScript, and REST APIs.\n\nHigh-Impact Spatial Focus: Combine core full-stack front-end engineering with advanced geospatial application architecture.\n\nDedicated Onsite Collaboration: Collaborate directly alongside technical leads and project teams in a focused 5-day per week workspace.\n\nResponsibilities\nFront-End & UI Engineering: Design, develop, code, and test responsive front-end user interfaces, ensuring seamless user interactions and cross-browser compatibility.\n\nWeb Mapping Application Customization: Customize and extend web mapping applications using VertiGIS Studio Web SDK, Geocortex Viewer for HTML5 SDK, or ArcGIS Maps SDK for JavaScript.\n\nGIS Platform & Workflow Development: Build and deploy custom GIS viewers and workflow tools using VertiGIS Studio (Web and Workflow), Geocortex Essentials, and ESRI Experience Builder / Web AppBuilder.\n\nREST API & Service Integration: Consume and integrate spatial data services utilizing ArcGIS REST APIs, ArcGIS Server, and ArcGIS Portal environments.\n\nModern Web Coding & Scripting: Write clean, modular code using JavaScript, TypeScript, HTML5, and CSS3, while integrating modern front-end frameworks like React.\n\nAccessibility Compliance: Design and code intuitive front-end web components that comply with web accessibility standards (WCAG 2.0 Level AA / AODA requirements).\n\nTechnical Troubleshooting & Quality Assurance: Translate business specifications into working application code, conduct unit testing, debug front-end defects, and provide technical post-implementation support.\n\nQualifications\nWeb Mapping SDK Customization: Proven experience customizing mapping applications using VertiGIS Studio Web SDK, Geocortex Viewer for HTML5 SDK, or ArcGIS Maps SDK for JavaScript (Strictly Required).\n\nFront-End & Web Technologies: Hands-on expertise with JavaScript, TypeScript, HTML5, CSS3, React, and responsive web design frameworks (Strictly Required).\n\nESRI Application Builders: Proficiency with ESRI-based application builders including VertiGIS Studio (Web/Workflow), Geocortex Essentials, or ESRI Experience Builder (Strictly Required).\n\nGIS Services Integration: Demonstrated experience consuming and interpreting GIS web services via ArcGIS REST API, ArcGIS Server, and ArcGIS Portal (Strictly Required).\n\nAccessibility Standards: Experience developing web UI components compliant with web accessibility standards (WCAG 2.0 Level AA / AODA) (Strictly Required).\n\nNice-to-Have Assets:\nPrior front-end software development experience within a public sector or enterprise environment.\n\nExperience running pilot programs or integrating third-party APIs and middleware.\n\nStrong background in user interface (UI) and user experience (UX) design principles.\n\nSummary\nIf you're interested in the \"Senior Software Developer - Front End\" role based in Toronto, we encourage you to apply online at www.randstad.ca.\nOnly qualified candidates will be contacted for the next steps. We look forward to hearing from you!\n\nRandstad Canada is committed to fostering a workforce reflective of all peoples of Canada. As a result, we are committed to developing and implementing strategies to increase the equity, diversity and inclusion within the workplace by examining our internal policies, practices, and systems throughout the entire lifecycle of our workforce, including its recruitment, retention and advancement for all employees. In addition to our deep commitment to respecting human rights, we are dedicated to positive actions to affect change to ensure everyone has full participation in the workforce free from any barriers, systemic or otherwise, especially equity-seeking groups who are usually underrepresented in Canada's workforce, including those who identify as women or non-binary/gender non-conforming; Indigenous or Aboriginal Peoples; persons with disabilities (visible or invisible) and; members of visible minorities, racialized groups and the LGBTQ2+ community.\n\nRandstad Canada is committed to creating and maintaining an inclusive and accessible workplace for all its candidates and employees by supporting their accessibility and accommodation needs throughout the employment lifecycle. We ask that all job applications please identify any accommodation requirements by sending an email to  to ensure their ability to fully participate in the interview process.\n\nThis posting is for existing and upcoming vacancies.","description_format":"text","description_chars":5297,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Government"],"lifecycle":[{"event":"open","at":"2026-10-22T13:43:23Z"}],"visa":[],"liveness":{"score":54,"band":"ok","label":"Likely open","p_open":1,"p_active":0.54,"p_room":1,"age_days":4,"expected_fill_days":28,"reasons":["seen:4","agency","velocity","win:early","comp:brand"],"computed_at":"2026-10-25T05:49:26Z"},"pay":null,"html_url":"https://alion.io/job/randstad-senior-software-developer-front-end","json_url":"https://alion.io/job/randstad-senior-software-developer-front-end.json","meta":{"generated_at":"2026-10-25T22:42:51Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":32043,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-26T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":19351},"rest":"https://alion.io/mcp/rest/get_company?id=19351"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Frandstad-senior-software-developer-front-end"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Frandstad-senior-software-developer-front-end"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Frandstad-senior-software-developer-front-end"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/randstad-senior-software-developer-front-end\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Frandstad-senior-software-developer-front-end"}]}