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Title: Australian Payroll Expert (STP Phase 2 / ATO ECT) – Mapping & Test Fixes Description: We are an Australian payroll software company currently undergoing ATO STP Phase 2 External Conformance Testing (ECT). Our submission infrastructure is already complete and working (Ozedi + MessageXchange). We are successfully generating and submitting STP files. We are NOT looking for help with integration or XML transport. We need an expert to review and correct our payroll mapping logic and business rules to pass remaining ECT test cases. Scope of Work: Review failing ECT test cases Identify incorrect STP classifications and business rule issues Correct mapping for: Earnings (gross vs overtime vs bonuses) Allowances (vehicle, travel, tools, etc.) Leave types (paid leave, cash out, termination scenarios) Lump sum classifications Provide clear logic or pseudocode for implementation Help ensure outputs align with ATO STP Phase 2 requirements Assist until test cases pass Important Notes: Our system currently uses hardcoded mappings — we need guidance toward correct logic (and ideally a more scalable rules-based approach) This is NOT a basic payroll processing job This is NOT a UI or frontend role Required Experience (ESSENTIAL): Direct experience with Australian STP Phase 2 Experience working on payroll software systems (not just running payroll) Strong understanding of ATO reporting categories and classification rules Experience with one or more of: Xero Payroll MYOB Employment Hero / KeyPay ADP / SAP / Workday payroll systems Highly Preferred: Experience with ECT / conformance testing Experience fixing payroll mapping issues Ability to explain decisions clearly (not just code blindly) Engagement: Short-term contract (expected 1–3 weeks) Immediate start Goal: Pass remaining ECT test cases To Apply: Please include: Your experience with STP Phase 2 Payroll systems you have worked on Any experience with ECT or payroll mapping issues Brief explanation of how you would approach fixing mapping issues Screening Question (mandatory): How would you handle a pay item that must be reported differently depending on whether it is normal pay, a cash out, or part of a termination?
Project ID: 40433219
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49 freelancers are bidding on average $7,494 AUD for this job

Hello, We've carefully reviewed your project details concerning the Australian Payroll Mapping & ECT Test Fixes and understand the intricate requirements you outlined. Our extensive experience in AI-first product development, particularly within complex systems, positions us uniquely to tackle the specific challenges of STP Phase 2 compliance. Previously, we've successfully navigated similar complexities in payroll systems by addressing mapping logic and business rule discrepancies. Our goal is to provide you with a robust, scalable solution that aligns seamlessly with ATO's stringent requirements. With over eight years in the field and a proven record of top-rated results, we're adept at handling intricate payroll systems, including Xero and MYOB, and have direct experience with STP Phase 2. Our expertise extends to implementing secure, context-aware automation, ensuring compliance and precision in reporting. We invite you to message us with more specific details. We promise a detailed, tailored proposal within 24 hours, ensuring clarity and transparency in our collaborative approach. Looking forward to the opportunity to assist you further. Best regards, Puru Gupta
$10,000 AUD in 50 days
7.6
7.6

With over a decade of experience in full-stack architecture and high-scale systems, I understand the critical need to address your Australian Payroll Mapping & ECT Test Fixes project goal of passing the remaining ECT test cases. My background in successfully scaling systems for over 1 million users and working on high-security FinTech projects directly applies to the complexity of reviewing and correcting payroll mapping logic and business rules. A strategic insight for ensuring scalability in this project is to transition from hardcoded mappings to a more scalable rules-based approach. Drawing from my past success in building and scaling Telegram Mini Apps for a large user base, I am confident in my ability to handle the intricacies of your project requirements. I encourage you to take action by reaching out to discuss further details and a roadmap for successfully meeting your goals. Let's collaborate to ensure your payroll mapping and ECT test fixes are efficiently implemented and lead to a successful outcome.
$8,000 AUD in 60 days
7.6
7.6

Hi there, I will review your failing ECT test cases, correct the STP Phase 2 classification mappings — earnings, allowances, leave types, and lump sum categories — and deliver clear pseudocode your team can implement to pass the remaining ATO conformance tests. For your screening question — a pay item like annual leave needs context-aware mapping rather than a static lookup. I will replace your hardcoded approach with a rules engine where each pay item resolves its STP reporting category based on the payment context (normal pay, cash out, or termination). For example, annual leave paid normally maps to gross, cashed out maps to lump sum D, and on termination maps to lump sum A or B depending on pre/post-1993 service. This eliminates misclassifications without touching your submission pipeline. Looking forward to discussing further. Best regards, Kamran
$5,517 AUD in 30 days
7.1
7.1

Dear Client, I am very interested in assisting with your STP Phase 2 ECT remediation work and can help review failing classifications, identify incorrect payroll mappings, and refine the business logic to align with ATO reporting requirements using a scalable rules-based approach rather than rigid hardcoded mappings; I understand the complexity of earnings, allowances, leave handling, lump sums, and termination scenarios within payroll systems and can provide clear implementation guidance, pseudocode, and structured mapping logic to help your remaining ECT cases pass efficiently. Which ECT failure scenarios are currently causing the highest number of rejected test cases? Are your current mappings centralized in a rules engine or spread across multiple payroll modules? Which payroll platforms or STP mapping models has your team previously referenced internally? Would you prefer immediate fixes to failing outputs first, or prioritizing a scalable long-term mapping structure? Best Regards Arslan Ahmed
$10,000 AUD in 30 days
6.3
6.3

Hi, I can help you You have STP files sending fine, but some rules are wrong. I’ll review each failed test, spot where pay items are misclassified, and fix the logic. I’ll write clear, plain rules for earnings, allowances, leave, lump sums, and edge cases like cash out and termination, so your outputs match ATO rules and pass ECT. This will take a few days, I've been doing this type of work for years. I have short walkthrough videos on my Freelancer profile showing similar work. 1) What mappings and rules do you have now, and which ECT cases are failing? 2) What should the final outputs look like for each pay item in normal, cash out, and termination? Ideally, we have a call and go through the details together so I can make sure I understand everything correctly, address any questions, and give you a quote and timeline. Would that work? Best, Nicolas
$7,500 AUD in 7 days
5.6
5.6

Hi, I’m Lo T. With 10+ years of experience and a perfect 5-star record over 34 projects, I specialize in building complex SaaS orchestration systems and high-precision regulatory logic. I have deep experience architecting rule-based engines that translate operational data into strict compliance formats (XML/JSON), ensuring data integrity for high-stakes auditing. My Approach to Mapping Fixes: I will move your system from hardcoded links to a Conditional Mapping Engine. We will map your internal pay codes to the ATO’s disaggregated taxonomy (Gross, Overtime, Paid Leave, etc.) based on a context-aware strategy. This ensures that a single pay item is correctly bucketed based on the transaction event (e.g., Termination vs. Regular Run). Screening Question Answer: I handle contextual reporting by applying a Multi-Factor Mapping Layer. A pay item is evaluated against the Reason for Payment and Employee Status before the STP file is generated: Normal Pay: Maps to Paid Leave (Type O - Other). Cash Out: Maps to Paid Leave (Type C - Cash Out). Termination: The logic shifts to evaluate Lump Sum A, B, or D based on the termination reason (e.g., Redundancy vs. Resignation) and the specific date thresholds required by the ATO. I am ready to start immediately to help you clear your remaining ECT cases. Best regards, Lo T.
$13,000 AUD in 20 days
5.6
5.6

Seeing this posted again suggests the previous ECT fixes didn't hold under full validation. STP Phase 2 failures often stem from payload structure mismatches rather than calculation errors. I've managed data integrity across 150+ external service integrations where schema validation was critical. At Coinread, I implemented automated testing pipelines that caught mapping errors before they reached production. This same approach stabilizes compliance reporting feeds. You need the transmission layer to be as reliable as the calculation logic. I can review the failing test cases and align the data mapping with the ATO technical specifications. What framework are you currently using to generate the STP payloads?
$5,000 AUD in 7 days
5.1
5.1

I’m very interested in assisting with your remaining STP Phase 2 ECT mapping and business-rule fixes. With 15+ years of experience in enterprise software development, financial/payroll workflows, and complex business-rule implementation, I understand the importance of accurate ATO classification logic and the challenges involved in ECT compliance. I understand that your transport/submission layer is already operational, so my focus would be specifically on: * Reviewing failing ECT scenarios * Identifying incorrect payroll classifications * Correcting mapping/business-rule logic * Helping move from rigid hardcoded logic toward a maintainable rules-driven structure * Ensuring outputs align with STP Phase 2 reporting expectations My approach to fixing mapping issues: 1. Review failed ECT cases and identify classification mismatches 2. Trace payroll item metadata, event context, and reporting outcome 3. Separate earnings/allowances/leave/lump sums into rules-driven categories 4. Introduce contextual reporting logic based on payroll event type 5. Validate against ATO STP Phase 2 specifications and edge cases 6. Retest iteratively until ECT scenarios pass consistently Availability: * Immediate start available * Comfortable working intensively over the next 1–3 weeks * Able to collaborate closely during ECT iterations and fixes I’d be happy to review sample failing scenarios and discuss how best to stabilize and future-proof your STP Phase 2 mapping logic.
$9,900 AUD in 7 days
4.1
4.1

Envisioning logical and extensible solutions is my strong suit. Instead of simply going for hard-coded mappings, I intend to guide you toward a more scalable rules-based approach that precisely adheres to the ATO STP Phase 2 requirements. My strategies prioritize a long-term mindset to ensure as your business grows, your payroll mappings won't pose any issues. What sets me apart is my dedication to delivering quality work that surpasses clients' expectations. I don't just fix issues; I also make sure to communicate effectively and explain decisions clearly, so you're aware of the transformations introduced. Choosing me for this project not only guarantees immediate correction of mapping errors but also comprehensive knowledge transfer that empowers you to autonomously handle similar challenges in the future. Let's partner up and fortify your software for flawless external conformance testing
$8,000 AUD in 7 days
3.1
3.1

As a freelance writer with over 16 years of diverse experience, ranging from authoring books and SEO-optimized web content to technical manuals and engaging newsletters, I possess the ability to understand complex systems and offer creative solutions. I am adept at not only writing code but also explaining my rationale behind the code, an invaluable asset when tackling payroll mapping issues. Furthermore, my linguistic flexibility in over 200 languages may come in handy in interpreting ATO reporting categories and communication requirements. Though my background may not include direct involvement with Australian STP Phase 2 or specific payroll software systems such as Xero Payroll or MYOB, adaptability has always been one of my core strengths. Throughout my career, I've immersed myself in areas that are initially unfamiliar only to quickly become proficient. Fixing payroll mapping issues requires clear conceptualization and precise articulation; which are both within my wheelhouse. In the last leg of your project submission process, you need someone who can bring fresh perspectives, spot logic gaps and suggest better implementation methods while abiding by ATO reporting requirements. My goal-orientation, attention to detail and task efficiency will ensure a productive working relationship where we can rectify the remaining ECT test cases together in a short timeframe.
$5,000 AUD in 30 days
2.0
2.0

Hey Mate , I am a senior developer with 20 years of software development experience with skills including Xero, .NET, Software Architecture, MYOB, Payroll, Windows Desktop, Tax Compliance, API Integration, ASP.NET and SAP. I have worked on a wide range of projects including mobile applications, backend systems, API integrations, automation tools, and cloud-based solutions. I focus on building stable, scalable, and maintainable software with clean architecture and strong attention to detail. I am comfortable working independently, communicating clearly, and delivering reliable results on time. I would be happy to discuss your project requirements and contribute my experience to help achieve your goals. Best regards
$5,000 AUD in 5 days
1.4
1.4

Hey , I just finished reading the job description and I see you are looking for someone experienced in Tax Compliance, Software Architecture, .NET, Payroll, Windows Desktop, Xero, API Integration, ASP.NET, MYOB and SAP. This is something I can do. Please review my profile to confirm that I have great experience working with these tech stacks. While I have few questions: 1. These are all the requirements? If not, Please share more detailed requirements. 2. Do you currently have anything done for the job or it has to be done from scratch? 3. What is the timeline to get this done? Why Choose Me? 1. I have done more than 250 major projects. 2. I have not received a single bad feedback since the last 5-6 years. 3. You will find 5 star feedback on the last 100+ major projects which shows my clients are happy with my work. Timings: 9am - 9pm Eastern Time (I work as a full time freelancer) I will share with you my recent work in the private chat due to privacy concerns! Please start the chat to discuss it further. Regards, Salikeen Studio
$5,000 AUD in 4 days
0.6
0.6

Hi, good day. The primary technical challenge for your ECT success is the transition from rigid, hardcoded mappings to a dynamic, attribute-driven logic engine that can handle complex STP Phase 2 conditional reporting, such as the shifting classifications of leave based on termination status. Having navigated the nuances of ATO conformance for major payroll providers, I specialize in "Business Rule Decoupling," ensuring that your system correctly identifies disaggregation requirements for allowances and lump sums without breaking existing data structures. My technical solution involves three big steps: first, a comprehensive audit of your failing ECT test cases to identify "mapping leakage" where gross earnings and allowances overlap; second, the design of a hierarchical logic matrix that evaluates pay items against the three ATO pillars (Payment Type, Leave Category, and Termination Status); and third, the implementation of a scalable rules-engine to automate the classification of Lump Sum A/B/E and ETP components. I understand this project perfectly and suggest we communicate for further discussions.
$5,000 AUD in 6 days
0.0
0.0

Hello, I don't have any pending jobs now and can start working on your project immediately. I have hands-on experience with Australian STP Phase 2 payroll mapping, ATO category rules, and software-side pay item classification across systems such as Xero, MYOB, and KeyPay. I would review the failing ECT cases, trace each pay item to its reporting context, and define rules for earnings, allowances, leave, lump sums, cash outs, and termination scenarios so your developers can replace hardcoded mappings with cleaner logic. Please take a look at some of my previous works: Hope to discuss with you in more details. Kind regards,
$5,000 AUD in 5 days
0.0
0.0

⭐⭐⭐⭐⭐ ✅Hi there, hope you are doing well! I have successfully worked on Australian STP Phase 2 payroll mapping projects where I reviewed and corrected classification and business rules to ensure seamless ECT test passes. From my experience, the critical factor is precise understanding and adjustment of payroll categories aligned with ATO STP Phase 2 compliance. Approach: ⭕ Review your failing ECT test cases in detail ⭕ Identify mapping errors and business rule gaps ⭕ Redefine earnings, allowances, leave, and lump sum mappings with clear pseudocode ⭕ Propose scalable rules-based logic to replace hardcoded mappings ⭕ Guide you through iterative testing until all ECT cases pass ❓ What specific payroll systems and data formats are you currently using? ❓ Can you share examples of the failing ECT test cases? ❓ Is the existing codebase accessible for review during the engagement? I’m confident I can bring clarity and accuracy to your Australian payroll mapping to pass Phase 2 ECT smoothly. Looking forward to working with you. Best regards, Nam
$8,000 AUD in 40 days
0.0
0.0

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