{"id":3044073,"url":"https://alion.io/job/westpac-nz-senior-modeller","title":"Senior Modeller","company":{"id":450143,"name":"Westpac NZ","domain":"westpac.co.nz","url":"https://alion.io/company/westpac-nz","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":100,"open_postings":4,"ghost_share":0,"stale_share":0,"repost_share":0.25,"time_to_fill_p50_days":14,"computed_at":"2026-10-30T05:48:23Z"}},"role":"Finance","role_family":"Finance","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["New Zealand"],"countries":["NZ"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":48000,"max_usd":109000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":7681},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Python","optional":false},{"name":"SAS","optional":false},{"name":"SQL","optional":false}],"status":"live","first_seen_at":"2026-10-21T23:46:28Z","employer_posted_date":"2026-10-21","last_verified_at":"2026-10-30T07:44:07Z","board_verified":true,"closed_at":null,"days_open":8,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":8},"description":"Mō te tūranga | About the Role\nWe’re looking for a Senior Modeller to join our Quantitative Risk Management (QRM) team, applying your quantitative expertise to help shape Westpac’s credit risk profile and strengthen how we understand and manage risk.\nYou’ll work across retail and non-retail portfolios, collaborating with teams across the bank to deliver high-quality modelling outcomes and strengthen best practice. You’ll also bring your expertise to wider modelling projects, work closely with stakeholders across the bank and help grow modelling capability and best practice across QRM.\nIn this role, you’ll:\nDevelop and enhance Probability of Default (PD), Exposure at Default (EAD) and Loss Given Default (LGD) credit risk models.\nMonitor model performance and develop supporting tools.\nSupport stress testing, scenario analysis, benchmarking and model reviews.\nContribute to model governance, validation and regulatory reviews.\nShare your expertise and help grow modelling capability across QRM.\nImprove practices across analytics, coding, documentation and data visualisation.\nChallenge existing processes to improve efficiency, accuracy and quality.\nCollaborate with stakeholders to keep projects moving and deliver quality outcomes.\nNā tāu rourou | What will you bring?\nYou’ll bring a strong quantitative mindset and enjoy using data and modelling to solve complex problems and deliver practical insights.\nIdeally, you’ll have:\nA tertiary qualification in Statistics, Mathematics or a related field.\nProficiency in at least one analytical programming language such as SAS, SQL, R or Python, with the ability and willingness to learn new tools.\nStrong analytical and problem-solving skills.\nThe ability to write clear technical documentation and confidently communicate your findings to senior stakeholders.\nStrong attention to detail and the confidence to constructively challenge.\nA collaborative approach and the ability to proactively manage timelines and work with others to resolve blockers.\nFamiliarity with regulatory frameworks such as the Basel Accord, RBNZ Banking Prudential Requirements, APRA Prudential Standards or IFRS would be an advantage, but isn’t essential.\nIf you enjoy combining quantitative modelling, coding and problem solving with the opportunity to influence how credit risk is understood and managed, we’d love to hear from you.\nWestpac Hei Wāhi Mahi | Working at Westpac\nImmersing yourself in a supportive team environment, and receive some of the best banking, and lifestyle benefits in the market along with:\n4 weeks standard holiday + 5 additional days of wellbeing leave to support you to be your best\nAdditional purchased leave options up to 4 weeks per year\nBanking benefits, insurance discounts and superannuation scheme\nCareer growth - we promote internal capability; we have programmes that recognise star performers\nGenerous parental leave - and top up government paid parental leave\nSchool holiday subsidy - help you balance work and family during school holiday\n2 Volunteer days per year\nKo mātou tēnei | Our Organisation\nAt Westpac, we’re working together to build a fairer and stronger New Zealand for our people, customers, and communities. For over 160 years we’ve been driven by our purpose to Create Better Futures Together.\nWhat makes us unique are the incredible people we’re lucky enough to have walk through our doors every day. The giant ‘W’ on our building doesn’t just stand for Westpac - it says, double you. We’re a place that values, rewards and recognises individuality. Where you can be your whole self, your true self, and your best self. We’re recognised as a place where talent is developed, where passions are fuelled and where ambitions of all shapes and sizes thrive. And it all starts with you!\nTono mai ināianei! | Apply Now!\nApply today with your CV and Cover Letter.\nThe people of Aotearoa, New Zealand hail from many cultures and backgrounds. At Westpac New Zealand, we draw on this enormous talent pool to cultivate a team rich in ability and empowered to reach its full potential. Our aim is to be brave challengers, celebrating our differences and relentlessly advocating for our customers. It starts with us - we believe that when we care deeply and do our best for our people, they’ll do their best for our customers. We encourage people from all walks of life to apply, including those who are neurodivergent, have chronic health conditions or disabilities - your attitude and passion are as important to us as your experience, qualifications and capabilities.\nMahi tahi tātou, kaha ake tātou | Together Greater\nApplications close:\n6 November 2026","description_format":"text","description_chars":4634,"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":["Parental leave"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Commercial & Retail Banks"],"lifecycle":[{"event":"open","at":"2026-10-21T23:46:28Z"}],"visa":[],"liveness":{"score":81,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.856,"p_room":0.945,"age_days":8,"expected_fill_days":14,"reasons":["conf:3","velocity","win:mid"],"computed_at":"2026-10-30T05:48:23Z"},"pay":null,"html_url":"https://alion.io/job/westpac-nz-senior-modeller","json_url":"https://alion.io/job/westpac-nz-senior-modeller.json","meta":{"generated_at":"2026-10-30T17:28:21Z","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":5998,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-31T00:00:00Z"}},"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":450143},"rest":"https://alion.io/mcp/rest/get_company?id=450143"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fwestpac-nz-senior-modeller"},{"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%2Fwestpac-nz-senior-modeller"},{"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%2Fwestpac-nz-senior-modeller"},{"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/westpac-nz-senior-modeller\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fwestpac-nz-senior-modeller"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3044073}},{"tool":"search_jobs","arguments":{"company":"westpac.co.nz","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3044073},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. Docs: https://alion.io/developers"}}