Java software developer • temecula ca
Mercor is partnering with a **frontier AI research lab** to engage experienced software engineers with deep expertise in **legacy codebase migration and modernisation**.We are looking for engineers... Show more
Accounting knowledge we require **Financial reporting & the close** - US GAAP financial statements and the period-end close and reporting cycle - Reconciliations, substantive analytics, and tie-out... Show more
Cryptography & Systems Development.Senior Software Engineer / Technical Leader (Individual Contributor).C/C++, Cryptography, Python, Linux/POSIX, Systems Programming.Secure software, cryptograp... Show more
Families in our community trust us with their homes and belongings after a fire, flood, or storm.Our Contents team steps in to carefully pack, protect, and inventory everything a family owns so it ... Show more
Particle & Nuclear Physics Expert** **About the Project** We're building a large-scale benchmark to test how well advanced AI systems can solve hard scientific and engineering problems.As a task de... Show more
The Best Teams are Created and Maintained Here.The Tree Care Service (TCS) Business Developer (BD) manages the tree care services pipeline from prospecting to closing.The TCS Business Developer col... Show more
We are looking to hire highly motivated, organized, and skilled Occupational Therapists with an attitude to continuously learn, improve, and provide our patients with the best care possible! &... Show more
Computational Statistics and Applied Mathematics Expert ### About the Project We're building a large-scale benchmark to test how well advanced AI systems can solve hard scientific and engineering p... Show more
Overview** We are hiring **Engineering / Platform** professionals with technical backgrounds in software engineering, infrastructure, or platform development.In this role, you will review, assess, ... Show more
Intuit is seeking highly motivated individuals to join our dynamic team as dedicated year-round TurboTax Retail Experts in one of our TurboTax Retail or Flagship locations across the United States.... Show more
Computational Statistics and Applied Mathematics Expert ### About the Project We're building a large-scale benchmark to test how well advanced AI systems can solve hard scientific and engineering p... Show more
Accounting Specialist is responsible for accurately entering, maintaining, and verifying financial data within the company's accounting systems.This position supports the accounting department by p... Show more
Note : This is an educational program, not a job.Successful completion of the program does not guarantee employment but will equip you with valuable skills for the IT job market.Looking to start a ... Show more
Job Description We are looking for a self-motivated individual with the ability to sustain a high level of energy and focus.The primary responsibility for this position is to work with clients to i... Show more
Computational Seismology & Geophysics Expert** **About the Project** We're building a large-scale benchmark to test how well advanced AI systems can solve hard scientific and engineering problems.A... Show more
Position: Commercial Insurance Account Manager - Insurance.Accurately input policy updates and account information.Communicate with client, producer, and carrier underwriters in regards to policy a... Show more
Computational Structural & Mechanical Engineering Expert** **About the Project** We're building a large-scale benchmark to test how well advanced AI systems can solve hard computational scientific ... Show more
Location: Murrieta, CA Schedule: Monday-Friday | 7:00 a.Position: Full-TimeAbout the Role4 Corners Repair & Restoration is looking for an experienced Diesel Mechanic to diagnose, repair, and mainta... Show more
Mercor is partnering with a **frontier AI research lab** to engage experienced software engineers with deep expertise in **legacy codebase migration and modernisation**. We are looking for engineers who have personally executed complex migrations across **large, production-grade systems**, particularly in **financial services, fintech/payments, insurance, healthcare, telecom, large technology companies, and other mission-critical enterprises**. Strong hands-on experience with production migrations is the primary qualification. ## What You'll Do - Design, implement, review, and evaluate complex **codebase migration and modernisation tasks**. - Analyse legacy code, dependencies, APIs, databases, build systems, and infrastructure to determine safe migration approaches. - Preserve **functionality, backwards compatibility, data integrity, security, and performance** during migrations. - Develop tests and validation strategies to identify migration regressions and behavioural differences. - Evaluate AI-generated migration solutions for **correctness, completeness, maintainability, and production readiness**. ## Relevant Migration Experience Candidates should have deep expertise in **one or more** of the following: - **Language/version:** Java 8 → 17/21, legacy .NET → modern .NET, Python 2 → 3, PHP 7 → 8 - **Language rewrites:** COBOL → Java/Python, JavaScript → TypeScript - **Frameworks:** Angular, Rails, Django, Spring/Spring Boot, , Next.js/Astro, and other major framework upgrades/replacements - **Databases & ORMs:** Oracle/MySQL → PostgreSQL, SQL → NoSQL, Hibernate → jOOQ, Sequelize → Prisma, raw SQL → ORM - **Infrastructure:** VMs/bare metal → containers, Docker/Kubernetes, cloud-native architectures - **CI/CD:** Jenkins/Travis → GitHub Actions, GitLab CI, or modern deployment pipelines - **Build/package tooling:** Maven → Gradle, Webpack → Vite, CRA → Next.js, npm → pnpm - **APIs:** REST → GraphQL, HTTP/REST → gRPC, SOAP/legacy APIs → modern interfaces - **Authentication:** Legacy auth → OAuth/OIDC, SAML/SSO, modern identity and authorisation systems - **Repositories:** Polyrepo → monorepo using Bazel, Nx, Turborepo, or similar - **Testing:** Migration of unit, integration, browser, and E2E testing frameworks - **Dependencies/SDKs:** Replacement of deprecated or EOL libraries, APIs, runtimes, and vendor SDKs ## Ideal Background - **5+ years of professional software engineering experience**, ideally Senior, Staff, Principal, or equivalent. - Personally owned or made substantial technical contributions to **large-scale production migrations**. - Experience working with mature systems involving technical debt, complex dependencies, legacy integrations, and significant regression risk. - Strong knowledge of **compatibility, testing, observability, staged rollouts, rollback strategies, and behavioural equivalence**. - Ability to reason deeply about unfamiliar codebases and diagnose subtle migration failures. - **Especially valuable:** engineers who have modernised **core banking, payments, trading, insurance, healthcare, telecom, or other high-reliability systems**. - For **COBOL/mainframe modernisation, experience with technologies such as z/OS, CICS, JCL, DB2, VSAM, batch processing, and COBOL-to-Java/Python migrations** is particularly valuable. ## Why Join - Apply your migration expertise to help shape how **frontier AI models understand and execute complex software modernisation**. - Work on technically challenging problems modelled after **real-world, production-scale legacy systems**. - Contribute expertise developed from large enterprise migrations without needing an open-source maintainer background. - Opportunity for **ongoing work** as the research program expands.
