Finjobsly Logo
FJ
Finjobsly
HomeBrowse JobsBlogPost JobSalary Benchmark
IntelligenceAnalyze My CVAnalyze CV
Log InSign Up
  1. Home
  2. /
  3. Fintech Jobs
  4. /
  5. Software Engineering Jobs
  6. /
  7. Senior Full Stack Engineer, Growth & Experimentation – Krak
Finjobsly Logo
FJ
Finjobsly

AI-powered fintech job platform connecting financial professionals with the right opportunities in the evolving financial technology landscape.

Product

  • Features
  • Browse Jobs
  • All Jobs

For Employers

  • Post a Job
  • Pricing for Employers

Company

  • About Us
  • Partners
  • Contact Us
  • Blog

Resources

  • Help Center
  • Privacy Policy
  • Terms of Service

© 2026 Finjobsly. All rights reserved.

Connecting finance professionals with fintech opportunities

Finjobsly on PeerPush
Kraken logoK
KrakenEngineeringRemote

Senior Full Stack Engineer, Growth & Experimentation – Krak

BrazilFull-timeSeniorSalary: Not disclosed
Posted Oct 19, 2026Deadline: Nov 21, 2026
Job SnapshotActively hiring
LocationBrazil
Job typeFull-time
SalaryNot disclosed
DeadlineNov 21, 2026

Finjobsly Role Intelligence

Experience level
Senior
Work style
Remote
Visa sponsorship
Not specified
Salary
Not disclosed
Key skills
JavaScriptTypeScriptRustSQLReactPaymentsTrading

Get AI match insights

See your fit score & personalized tips.

Sign In Now
Finjobsly Intelligence— Generated from the employer's job description

What you'll own

Own end‑to‑end growth experiments in the Krak app, from hypothesis and design through building React Native features, launching, measuring results and iterating; also contribute backend services/APIs as needed.

What they're looking for

6+ years building large‑scale consumer apps with strong React/React Native skills, JavaScript/TypeScript expertise, experience running growth experiments, and ability to work on backend (open to Rust).

Why this role matters

The role drives user acquisition, activation, engagement and trading revenue, directly impacting how millions discover and use Kraken’s products.

Best suited to

A senior full‑stack engineer who thrives on fast, data‑driven product work, enjoys end‑to‑end ownership, and is comfortable navigating ambiguity in a growth‑focused fintech environment.

Fintech requirements

Visa sponsorship: No
Work arrangement: remote

About this role

Building the Future of Open Finance

Payward - the parent company behind Kraken, NinjaTrader, Breakout, xStocks, Payward Services and CF Benchmarks - has spent the last 15 years building one of the most modern and globally accessible financial infrastructure platforms in the industry, built to advance an open, global financial system.

The team

Founded in 2011, Kraken is one of the world’s longest-standing crypto platforms, trusted by over 10 million individuals and institutions across the globe. It offers spot trading, margin, futures, staking, and OTC services, with products built for both individual investors and institutional clients.

We’re looking for a Senior Full Stack Engineer to join a small, dedicated growth and experimentation team within Krak, focused on accelerating acquisition, activation, engagement and trading activity across the Krak app. This is a frontend-leaning full-stack role: the majority of your work will be in React Native, supported by enough backend capability to take an experiment from idea to live without waiting on another team.

Rather than executing against a rigid roadmap, you’ll work closely with Product on a continuous pipeline of fast, lightweight experiments, owning each one from hypothesis through implementation, launch, measurement and iteration. The mandate is simple: find the highest-leverage opportunities to grow users and revenue, prove what works, and scale the winners – with direct, measurable impact on how millions of customers discover and use Kraken’s products.

The opportunity

  • Build and ship consumer-facing features quickly in React Native and TypeScript, favouring small, high-velocity experiments over long-running projects.
  • Own experiments end-to-end – hypothesis, design, build, launch, measurement and iteration – using platforms such as Statsig to test globally or within specific markets.
  • Improve onboarding, activation and feature discovery to drive conversion, engagement and trading revenue, iterating rapidly on features that are already live.
  • Build viral acquisition features and value-add growth features on top of Krak’s existing product offering.
  • Contribute to backend services and APIs wherever an experiment requires it, so you can ship across the stack without being blocked. Our backend is primarily Rust; prior Rust experience is not expected, but enthusiasm for picking it up is.
  • Read your own results, including trade-offs between conversion gains and other metrics, and decide whether to scale, iterate or kill – driving technical decisions autonomously amid evolving priorities and limited upfront planning.

What you bring

  • 6+ years of software development experience building and shipping large-scale, consumer-facing applications. Strong, hands-on React and React Native experience is essential.
  • Demonstrated experience running growth experiments at consumer-facing businesses, with measurable impact on conversion, activation, retention or revenue. This is a consumer growth role, so B2B or platform-only backgrounds are not a fit.
  • Working backend proficiency: you can design and implement services and APIs yourself. We care about backend fundamentals rather than any particular language, and you should be open to working in Rust.
  • Strong JavaScript/TypeScript fundamentals, with hands-on experience across APIs, WebSockets and real-time systems, mobile performance, testing, and modern development workflows.
  • Practical experience designing, running and analysing A/B tests – feature flags, statistical significance, product analytics, funnel and cohort data – with the judgement to act decisively on what the results show.
  • End-to-end ownership of product features and a strong product engineering mindset, with the initiative and adaptability to operate with minimal direction amid ambiguity and frequently changing priorities.

Nice to haves

  • Customer-facing product experience within fintech, digital banking, payments, trading or crypto.
  • Hands-on experience with Statsig or a comparable experimentation platform, including regional and global rollouts.
  • Rust experience, given our backend stack.
  • SQL and self-serve analytics, so you can pull and interrogate your own data.
  • AI fluency. Familiarity with how AI tools and patterns have fundamentally shifted your development workflow and problem-solving approach.
  • Native mobile development (iOS/Android), distributed systems or microservices, or engineering within a hyperscaling consumer technology organisation.

Unless a specific application deadline is stated in the job posting, applications are accepted on an ongoing basis.

Please note, applicants are permitted to redact or remove information on their resume that identifies age, date of birth, or dates of attendance at or graduation from an educational institution.

We consider qualified applicants with criminal histories for employment on our team, assessing candidates in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance.

Our commitment

Payward is powered by people from around the world and we celebrate the diverse talents, backgrounds, contributions, and unique perspectives that everyone brings to the table. We hire based on merit, seeking out people with the right abilities, knowledge, and skills for the job. We encourage you to apply for roles where you don't fully meet the listed requirements, especially if you're passionate or knowledgeable about crypto.

We may ask candidates to complete job-related skills or work-style assessments as part of our hiring process. These assessments evaluate competencies relevant to the role and are applied consistently across candidates for similar positions. Results are considered alongside experience and interviews, and are not the sole basis for any employment decision.

As an equal opportunity employer, we don't tolerate discrimination or harassment of any kind, whether based on race, ethnicity, age, gender identity, citizenship, religion, sexual orientation, disability, pregnancy, veteran status, or any other protected characteristic as outlined by federal, state, or local laws.

Stay connected

Follow us on Twitter

Learn on the Kraken Blog

Connect on LinkedIn

Candidate Privacy Notice

More about this role

About company

Kraken logoK

Kraken

See website for more.

Full employer profile →Company website ↗

Required skills

JavaScriptTypeScriptRustSQLReactPaymentsTrading

Explore more

More Software Engineering Jobs→More jobs at Kraken→JavaScript jobs →TypeScript jobs →Salary benchmarks for this role →Browse all fintech jobs →

Kraken

Senior Full Stack Engineer, Growth & Experimentation – Krak

BrazilSalary: Not disclosed

Company insights

62

Happiness score

62/100

Based on 40 verified employee signals

Kraken launches Krak Visa debit card in the US

Krak launched its US debit card on August 18, offering up to 2% cashback in USD or Bitcoin and spending from dollars, crypto and more than 600 other supported assets.

August 2026From the webKraken Blog→

Payward promotes Robert Moore to chief financial officer

Kraken parent Payward appointed former Deputy CFO Robert Moore as CFO. Moore had spent over four years at the company and led the NinjaTrader acquisition and integration.

April 2026From the webKraken Blog→

Kraken parent reports $2.2B in 2025 adjusted revenue

Payward reported 2025 adjusted revenue of $2.2 billion, up 33% year over year, and adjusted EBITDA of $531 million, up 26%. Transaction volume reached $2 trillion.

2025From the webKraken Blog→

Kraken raises $800M across two rounds and reaches a $20B valuation

Kraken raised $600 million at a $15 billion valuation, followed by a $200 million strategic investment from Citadel Securities that valued the crypto exchange at $20 billion.

late 2025From the webFortune→

AI Generated Insights