{"id":1343762,"url":"https://alion.io/job/publicisgroupe-lead-full-stack-developer","title":"Lead Full Stack Developer","company":{"id":46462,"name":"Publicis Groupe","domain":"publicisgroupe.com","url":"https://alion.io/company/publicisgroupe","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"iCIMS","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Toronto, Canada"],"countries":["CA"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":130000,"max":150000,"currency":"USD","period":"year","gross":null,"usd_annual":150000},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Agile","optional":false},{"name":"AI Agents","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude","optional":false},{"name":"FastAPI","optional":false},{"name":"GCP","optional":false},{"name":"Go","optional":false},{"name":"Google GKE","optional":false},{"name":"Java","optional":false},{"name":"Kanban","optional":false},{"name":"Kubernetes","optional":false},{"name":"LLM","optional":false},{"name":"OpenAI","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"React.js","optional":false},{"name":"Scrum","optional":false},{"name":"Spring Boot","optional":false},{"name":"TypeScript","optional":false},{"name":"Vertex AI","optional":false},{"name":"C#","optional":true},{"name":"Google ADK","optional":true},{"name":"JavaScript","optional":true},{"name":"Kustomize","optional":true},{"name":"LangChain","optional":true},{"name":"LangGraph","optional":true},{"name":"LlamaIndex","optional":true},{"name":"Terraform","optional":true}],"status":"live","first_seen_at":"2026-09-27T16:03:59Z","employer_posted_date":"2026-09-27","last_verified_at":"2026-10-01T01:51:20Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"Company Description\nSaatchi & Saatchi is an advertising agency with the belief that creativity, data, media and technology should all work together, and we use that to influence human behavior and drive success for clients. S&S is one of the world's largest agency networks with 114 offices and more than 6000 employees globally.\nHere in our Toronto office we work with some of the countries most valued brands including Toyota, Buckley's, and Children's Advil, as well as several under the Mondelez banner (Crispers, Oreo, and Chips Ahoy just to name a few). We’re an award winning agency in both creativity and effectiveness, so it’s really important for us here to convert that innovation and the great ideas into real tangible business results for the organization.\nOverview\nSaatchi & Saatchi is seeking a Lead Full Stack Developer for an innovative AI platform initiative.You have 8+ years building production software systems and at least a few years leading or anchoring a team technically. You are a hands-on builder and you hold the architectural picture of a multi-tier platform - React frontend, Spring Boot backend, FastAPI agentic services, agent SDKs on top of LLM providers. You are equally comfortable reviewing a database migration, debugging a prod incident, mentoring a senior engineer, or sitting in a client architecture conversation. You thrive at the intersection of architecture, engineering, and program reality.\nResponsibilities\nResponsibilities\nOwn the technical direction across the platform's tiers - frontend, backend, agentic/AI services, data, and integrations - and hold the shared mental model of how the system actually fits together.\nPair closely with the Senior Technical PM and Program Director to translate product intent into a credible technical plan, and to surface what is genuinely hard vs. what is just unfamiliar.\nLead architecture and design reviews, write the deciding ADR when needed, and keep a small set of vendor-neutral patterns the team can lean on instead of a sprawl of frameworks.\nStay hands-on in the code - pick up meaningful slices of work, especially across tier boundaries (e.g. backend ↔ agentic, frontend ↔ auth/RBAC, infra-aware app changes).\nBe a first-class code reviewer across the stack: you set the bar for clarity, testability, security, and operability, and you raise the team's bar by reviewing thoughtfully.\nMentor mid-level and senior engineers; coach them through technical decisions, on-call experiences, and difficult code reviews.\nPartner with the Platform Engineer on production reliability - capacity, scaling, observability, and incident response - and own application-side reliability concerns.\nDrive integration architecture with internal and external systems using API-first and event-driven patterns; ensure identity, authorization, data protection, and auditability are built in, not bolted on.\nChampion the LLM/agent layer - agent orchestration, tool/plugin design, prompt and evaluation loops, provider abstraction (e.g. Vertex AI, Claude on Vertex, OpenAI) - and keep us out of vendor lock-in we cannot pay for.\nBuild redundancy on yourself - pair, document, rotate ownership, and ensure no critical system has exactly one person who understands it.\nQualifications\n8+ years in software engineering, with meaningful time as a hands-on lead, staff engineer, or solutions architect on production systems.\nProven experience designing and delivering complex, multi-service platforms - not just one service or one tier.\nStrong backend depth in at least one modern stack (Java/Spring Boot, Python/FastAPI, Node, Go, .NET); able to ramp on the others.\nSolid frontend literacy - comfortable reading and reviewing modern React/TypeScript code and reasoning about state management, auth, and performance.\nStrong cloud architecture background, preferably GCP (we run primarily on GKE); willing to deepen wherever the platform takes us.\nDeep understanding of API design, integration patterns, distributed systems, and the failure modes that come with them.\nExperience with containerization, Kubernetes, and modern CI/CD; you do not need to be a DevOps specialist, but you must operate well in that world.\nReal production experience with AI / LLM systems - agents, RAG, evaluation, tool integration - or a strong, demonstrable plan for getting there.\nComfortable working within Agile delivery models (Scrum, Kanban, or whatever variant actually ships).\nExcellent communication: you can explain a complex architecture to a non-technical executive and disagree with a senior engineer respectfully and with evidence.\nRequired Soft Skills\nHands-on bias - you reach for the code, the logs, and the diagram before you reach for the meeting invite.\nCalm, decisive judgment when there is no obviously right answer.\nStrong written communication - you can write a one-page architecture rationale that future-you will still understand.\nGenerous mentorship instinct - you make the people around you better, on purpose.\nComfortable with ambiguity and willing to make reversible decisions quickly while flagging the irreversible ones for broader input.\nPragmatic about technology choices - you optimize for the team's ability to operate the system, not for personal stack preferences.\nHonest about what you do and do not know; willing to say 'I'll find out' and then actually find out.\nNice to Have\nPrior experience working inside Publicis Groupe or another large holding-company agency network.\nProduction experience with Google ADK, LangGraph, LlamaIndex, or comparable agent frameworks.\nExperience with event-driven architectures, domain-driven design, and contract-first integration patterns.\nBackground in regulated or privacy-sensitive environments (identity, healthcare, financial, marketing-compliance).\nExperience supporting multiple products or clients on a shared platform (multi-tenant, multi-brand, white-label).\nComfort with Terraform, Kustomize, or other IaC tooling at a 'can read and improve' level.\nTrack record contributing to internal developer experience - patterns, scaffolds, golden paths.\nAdditional Information\nLocation & Eligibility: Candidates must be based in Canada, with valid Canadian work authorization of at least 12 months.\nHybrid Work: This role is remote. If you are GTA-based, the team meets once a month at our Toronto office (111 Queen St. E, Suite 200, Toronto, ON M5C 1S2).\nTime Off:\n- Up to 3 weeks vacation, with additional paid closure between Christmas and New Year's\n- Extended long weekends for provincial holidays - we give you both the Monday and Friday so you get a full 4-day break\n- 10 personal days per year\nFlexibility & Global Mobility: After completing one year, work remotely for up to 6 weeks per year from any of our 50+ global offices through our Work Your World program.\nBenefits: Comprehensive group coverage including:\n- Medical, dental, and vision care\n- Psychological and paramedical services\n- Disability insurance\n- Fertility support and gender-affirming care\n- Dedicated internal guidance programs for employees navigating cancer, fertility treatments, or gender transition\nParental Leave Top up: A 100% salary top up program once approved for Employment Insurance for the first 6 weeks of your parental Leave.\nDefined Contribution Pension Plan: Employees have the option to sign up to voluntarily contribute to a DCPP where Saatchi will match the employee contributions up to 5% after completing one year.\nGym Membership: Corporate Membership rates at Good Life Fitness\nFree access to a financial planner & more…\nCompensation: The salary range for this position is $130,000-$150,000 per year, based on experience, skills, and relevant certifications. We believe in pay transparency and are committed to offering competitive, market-aligned compensation.\nWe use artificial intelligence (AI) tools to support parts of our hiring process, such as reviewing applications or analyzing resumes. These tools assist our recruitment team but never replace human decision-making. We believe in a human-first approach, where your experience and potential are recognized by people.\nSaatchi & Saatchi is committed to building a diverse workforce representative of our community. We encourage and are pleased to consider all qualified candidates, without regard to race, colour, citizenship, religion, sex, marital / family status, sexual orientation, gender identity, aboriginal status, age, disability or persons who may require an accommodation, to apply. If you require a specific accommodation please contact Human Resources at 416-925-7733 or by email at .","description_format":"text","description_chars":8603,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Gym membership","Hybrid work","Parental leave"],"hiring_locations":[{"name":"Canada","iso":"CA","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-09-27T16:03:59Z"}],"liveness":{"score":35,"band":"fade","label":"Fading","p_open":1,"p_active":0.638,"p_room":0.55,"age_days":2,"expected_fill_days":2,"reasons":["conf:0","win:tail","comp:brand"],"computed_at":"2026-09-30T05:45:00Z"},"pay":{"stated_usd_annual":150000,"is_top_pay":false},"html_url":"https://alion.io/job/publicisgroupe-lead-full-stack-developer","json_url":"https://alion.io/job/publicisgroupe-lead-full-stack-developer.json","meta":{"generated_at":"2026-10-01T03:26:41Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":2905,"day_limit":5000,"remaining_today":2095,"minute_limit":60,"resets_at":"2026-10-02T00:00:00Z"}}}