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Linktree empowers everyone with the tools to curate, monetize, and grow their digital universe.
The Role
Own Linktree’s authentication and identity platform across signup, login, social authentication, account recovery, MFA, sessions, tokens, APIs, and business-account access. Build full-stack features with TypeScript, Node.js, React, GraphQL, databases, and AWS. Improve security, observability, rollout safety, and login conversion while partnering with Product, Security, and platform teams. Mentor engineers and use AI-assisted development to accelerate migrations, testing, and investigations.
Summary Generated by Built In
The Role
What You’ll Own
Who We’re Looking For
Our Story
Where and How We Work
How we’ll help you thrive
We’re looking for a Senior Software Engineer to join the Auth team — the group that owns how 70+ million people get into Linktree and stay safely signed in. Authentication is the first thing every Linker touches and the one surface that has to work every single time, across social login, email, sessions, tokens and the business-account access that sits on top of them.
You’ll work the whole path: the login and signup flows creators see, the services and APIs behind them, the session and token lifecycle, and the observability that tells us something is wrong before a Linker does. You’ll be hands-on across TypeScript, Node, React and AWS, and you’ll partner closely with Product, Security and the platform teams to decide where to harden, where to simplify, and where a small change in friction moves conversion for tens of millions of people.
This is a role for someone who likes owning a critical, unglamorous surface and making it excellent. Every improvement you ship removes a reason someone can’t get to their own digital presence — and helps Linktree achieve our mission: to empower anyone to curate and grow their digital universe.
- Build and ship the authentication and identity experiences Linkers touch first: signup, login, social auth, account recovery and multi-factor.
- Own the services behind them end-to-end — session and token lifecycle, revocation, rate limiting, and the APIs other squads depend on.
- Partner with Security to harden the auth surface, and with Product to keep friction honest so login conversion improves rather than degrades.
- Extend identity and access for business accounts and Workspaces, including the path toward SSO.
- Keep the surface observable: instrumentation, alerting and dashboards that catch auth failures before Linkers report them.
- Bring AI into how you build, and use it to move faster on migrations, tests and investigation.
- Raise the bar around you through review, pairing and documentation, and mentor engineers as the Auth team grows.
- 4+ years of professional software engineering experience, ideally including time on an auth, identity, platform or payments-adjacent team.
- Solid full-stack skills across our core stack: TypeScript, Node.js, React, GraphQL, PostgreSQL or MySQL and AWS, with the ability to move across layers to ship a feature end-to-end.
- Working knowledge of authentication and identity fundamentals: OAuth 2.0, OIDC, JWTs, session management, MFA and the common attack classes.
- Experience shipping changes to a high-traffic, critical path safely — feature flags, staged rollouts, migrations and backwards compatibility.
- Fluency with AI-assisted development (Claude, Cursor, Codex and similar), including how to prompt, validate and refine what these tools produce.
- A pragmatic instinct for balancing security against user experience, and the confidence to make that trade-off explicit with Product and Security.
- Clear communicator who works well with product, design and security partners across Melbourne, Sydney and other time zones.
- Able to work from our Melbourne or Sydney office on a hybrid basis.
Linktree is committed to providing a fair and competitive compensation package including cash, equity, and benefits. Final offers depend on multiple factors including location, experience, expertise, and role scope, and may vary from the range listed.
P.S. If you don’t tick every box in this listing, please don’t rule yourself out. We take pride in inclusion and hiring incredible human beings with great potential over ticking boxes – so if this role resonates with you, hit that apply button!
We’re on a mission to empower anyone to curate, grow, and monetize their digital universe. We created the “link in bio” category — and we’re just getting started. From creators, artists, and entrepreneurs to global brands, we’re redefining how people connect with their communities, showcase their content and promote products — all in one link.
Today, a community of 70+ million use Linktree, including icons like Adidas, TikTok, the UN Environmental Program, The NFL, Manchester United, World Central Kitchen, Sabrina Carpenter, Olivia Rodrigo, and Selena Gomez. With 48,000 new accounts created every day, Linktree is the fastest-growing leader in our space.
We’ve teamed up with some of the world’s biggest platforms including TikTok, Snap, YouTube, GoFundMe, Spotify, Google, Stripe, Reddit, Laylo, and Kajabi, to unify Linkers’ digital spaces, and we partner with retail brands Amazon, Lululemon, Nike, Target, Sephora, Lululemon, and more to share products they love.
We’re a tight-knit, passionate team building best-in-class tools that make online presence simple, powerful, and yours. If you're excited by the idea of shaping a new category, setting the standard, and making space for everyone to be seen and succeed, we’d love to meet you.
We're a global, diverse team spread across continents with offices in London, Los Angeles, Melbourne, and San Francisco. We work together flexibly and you can choose the setup that works best for you: fully remote or a hybrid mix of office and home.
We offer autonomy in how you structure your days and weeks. While we’re mindful of time zones and occasionally collaborate outside the typical 9–5, we lean into async work to keep things flowing. Our culture is family-friendly and Zoom-casual where kids, pets, and delivery drivers are welcome.
Our approach to benefits considers the whole person and the unique contributions they bring to Linktree. We want the experience at Linktree to be one that enables people to truly thrive so we can Go Further Together (one of our values). Some ways we support you:
- An annual wellbeing allowance to use on things like (but not limited to) fitness memberships, development courses, childcare, travel, charitable donations, pet insurance, home office set-up - the choice is yours!
- 100% coverage (and 80% for your dependents) of your monthly premiums for medical, dental, vision, disability and life insurance for US-based employees.
- Employer contribution towards your retirement.
- Generous time off for vacation, holidays, parental leave, volunteer time, and other categories.
- Employee stock option program - we want each and every employee to share in the company’s success.
At Linktree, we believe in promoting a culture that celebrates unique backgrounds, talents, and experiences, and we’re proud to be an equal opportunity workplace. We are creating an inclusive workplace where every individual feels valued, respected, and has equal opportunities to thrive. We aim to foster a diverse and inclusive environment where all team members have a sense of belonging. Linktree welcomes all people regardless of sex, gender identity, race, ethnicity, disability, pregnancy, age, or other lived experience.
Skills Required
- 4+ years of professional software engineering experience
- Full-stack experience with TypeScript, Node.js, React, GraphQL, PostgreSQL or MySQL, and AWS
- Working knowledge of OAuth 2.0, OIDC, JWTs, session management, MFA, and common authentication attack classes
- Experience shipping changes safely to high-traffic, critical-path systems using feature flags, staged rollouts, migrations, and backward compatibility
- Fluency with AI-assisted development tools such as Claude, Cursor, or Codex
- Experience with authentication, identity, platform, or payments-adjacent systems
- Ability to work from the Melbourne or Sydney office on a hybrid basis
- Clear communication and collaboration with product, design, security, and distributed teams
Linktree Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Linktree and has not been reviewed or approved by Linktree.
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Flexible Benefits — A sizable, use‑it‑your‑way stipend can be allocated across wellness, learning, lifestyle, childcare/pet insurance, or social impact. This flexibility increases the perceived value of total rewards.
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Healthcare Strength — U.S. coverage includes employer‑paid medical, dental, vision, disability, and life insurance, with support for dependents referenced. The breadth of employer‑paid coverage strengthens the overall value of compensation.
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Parental & Family Support — Policies include paid parental leave for both birthing and non‑birthing parents, along with return‑to‑work support and leave for pregnancy loss. These provisions signal strong backing for families at different stages.
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The Company
What We Do
Linktree is the market-leading linking platform that was the first of its kind, creating an entirely new category in tech. Today, a community of 70+ million use Linktree, including icons like Adidas, TikTok, the UN Environmental Program, The NFL, Manchester United, World Central Kitchen, Sabrina Carpenter, Olivia Rodrigo, and Selena Gomez. With 48,000 new accounts created every day, Linktree is the fastest-growing leader in our space. It's not only high profile users that turn to Linktree - it's the every day creators, the small businesses, the charities, the side hustlers and the business professionals too. On Linktree, we've seen teachers housing their lessons plans for home-schooling, realtors using it to share their property listings, activists using it to amplify cause and restaurants to house their menu. We’ve teamed up with some of the world’s biggest platforms including TikTok, Snap, YouTube, GoFundMe, Spotify, Google, Stripe, Reddit, Laylo, and Kajabi, to unify Linkers’ digital spaces, and we partner with retail brands Amazon, Lululemon, Nike, Target, Sephora, Lululemon, and more to share products they love. There is a place for everyone on Linktree.
Why Work With Us
We’re building a category-defining product, which means we get to write the rules as we go. With tens of millions of Linkers and billions of visitors each month, there’s no shortage of interesting challenges to tackle. If you’re excited by scale, love building alongside passionate people and want your work to reach millions, come create with us.
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