Senior Software Developer (Front End), Trading

Openkrill; United States; Hybrid; USD 140,000 - 200,000; Full time

Benefits offered by this job

Health benefits

Life insurance

Employer match for savings

20 vacation days

Wellness days

90 days away program

Employee resource groups

Job summary

Wealthsimple is Canada’s leading financial innovator, delivering simple, sophisticated products across trading, investing, crypto, and more. We seek a Senior Front End Engineer to own meaningful frontend slices of our trading surfaces used by millions of clients.

You’ll work across Order Execution and Options Trading teams, focusing on reliability, performance, and user-centric design, with opportunities to mentor and influence product direction within a hybrid NA workforce.

Qualifications

• 5+ years of professional software engineering experience with production-grade systems.
• Strong frontend fundamentals with React and TypeScript; React Native a plus.
• AI-first development workflow with governance and risk awareness.
• Product judgment and maker-owner mindset with ownership over domains.
• Technical leadership and collaboration through code reviews and design docs.

Responsibilities

• Own complex, end-to-end frontend projects across the trading experience, from design to launch and iteration.
• Build and improve client-facing surfaces powering order flow, trading, and real-time data with reliability and performance.
• Collaborate with Product and Design to clarify goals, surface trade-offs, and deliver outcomes, not just features.
• Make thoughtful architectural decisions and influence speed, quality, and scale.
• Mentor teammates, participate in reviews, and raise the technical bar across projects.

Skills

React

TypeScript

React Native

AI workflows

Technical leadership

Communication

Tools

GraphQL

Ruby on Rails

Kotlin

Java

Job description

BUILD SOMETHING PEOPLE LOVE

Wealthsimple is Canada’s leading financial innovator. The company offers a full suite of simple, sophisticated financial products across managed investing, do-it-yourself trading, cryptocurrency, tax filing, spending and saving. Wealthsimple currently serves more than 4 million Canadians and holds over $155 billion in assets under administration. The company was founded in 2014 by a team of financial experts and technology entrepreneurs, and is headquartered in Toronto, Canada.

We're proud of what we've built — and we're just getting started. Read our Culture Manual https://www.wealthsimple.com/en-ca/culture and learn more about how we work https://www.wealthsimple.com/en-ca/careers.

About the role

As a Senior Front End Engineer on our trading and investing teams, you'll own meaningful slices of the experiences at the heart of Canada's first zero-commission brokerage - the surfaces over 4 million Canadians rely on, and invest with. This is a pipeline role across several frontend-focused teams, including Order Execution and Options Trading, and we'll match you to the team where your experience and interests fit best.

These are high-visibility, high-stakes surfaces: the order flow across equities, options, and crypto, and the trading experiences active clients use every day. A slow screen or a mishandled order is felt immediately by our clients, so the bar for reliability, performance, and craft is high. You'll bring strong technical judgment, a bias toward action, and a deep sense of ownership, working closely with product managers, designers, and engineers to turn complex, high-stakes problems into simple, reliable trading experiences.

What you'll do

• Own complex, end-to-end frontend projects across the trading experience - from technical design through implementation, launch, and iteration
• Build and improve the client-facing surfaces that power our order flow and trading products, with a focus on reliability, performance, and correctness
• Work on high-stakes client journeys: order entry and execution, options trading, real-time market data, and portfolio experiences across equities, options, and crypto
• Make thoughtful architectural decisions and help the team balance speed, quality, and scale — influence what we build, how we build it, and where we go next
• Partner closely with Product and Design to clarify goals, surface trade-offs, and deliver outcomes, not just features
• Build with the reliability and observability standards that trading journeys demand — clients notice the moment something is slow or wrong
• Leverage AI-centric workflows to ship faster and safer — we invest heavily in AI tooling and expect senior engineers to push the frontier of how we use these tools
• Raise the technical bar through design reviews, code reviews, documentation, pairing, and mentorship

What you bring

• 5+ years of professional software engineering experience, with a track record of shipping production-grade systems that real users depend on
• Strong frontend fundamentals with React and TypeScript, and ideally React Native — you build performant, reliable client experiences and understand how they behave under real-world conditions.
• Native mobile experience (Swift/iOS or Kotlin/Android) is a strong plus, whether you've built native apps directly or directed and reviewed native work
• An AI-first development workflow that doesn't compromise on rigour — you've moved beyond AI as autocomplete into genuinely agentic workflows, and bring the judgment to know when the model is wrong, where the risks are, and what verification a change needs before it touches production
• Product judgment and a maker-owner mindset — you care about the client problem, simplify complexity, and want to own and grow a domain over time, not just ship the next ticket
• Technical leadership and strong communication — you raise the bar through your code, reviews, and design docs, navigate ambiguity, and bring others along with a collaborative, low-ego approach

Nice to have experience

• Experience building trading, brokerage, or other real-time, high-reliability financial surfaces
• GraphQL and performance optimization experience
• Ruby on Rails, Kotlin, or Java experience — helpful for working across the stack, but not a requirement; depth and willingness to ramp matter more
• Experience in a fast-moving environment where engineers have broad ownership and meaningful influence over product decisions
• Passionate about trading and investing, perhaps even an active investor or trader yourself, and you use that perspective to build experiences that feel intuitive to people managing their own money.

WHY WEALTHSIMPLE?

• Top-tier health benefits and life insurance
• Long-term group savings with employer match, through Wealthsimple for Business
• 20 vacation days, 4 wellness days, and unlimited sick and mental health days per year*
• 90 days away: work outside Canada for up to 90 days per year*
• Employee resource groups, including Rainbow (2SLGBTQ), Women of WS, and Black at WS

We are a hybrid team with over 1,500 employees across North America. The people are one of the best parts of working here: you'll collaborate with incredibly talented, curious, and driven teammates who are deeply committed to doing great work.

*Unlimited paid sick days, Wellness Days and the 90 day away program do not apply to certain roles.

ICYMI

Technology & Innovation at Wealthsimple: We move quickly and build thoughtfully. That means we're always looking for better ways to work — whether that's new tools, AI, or rethinking how we approach a problem. We don't expect you to have all the answers, but we do expect curiosity and a willingness to evolve alongside the products we're building.

Inclusion Statement:

We're building products for a diverse world, and we need a diverse team to do it well. We strongly encourage applications from everyone, regardless of race, religion, colour, national origin, gender, sexual orientation, age, marital status, or disability status.

Accessibility Statement:

We're committed to an accessible hiring experience. If you need any accommodations throughout the interview process, please let us know — we'll work with you to make sure you have what you need. We also welcome any feedback on how we can better accommodate candidates with accessibility needs.

AI in Hiring:

We may use artificial intelligence (AI) tools to support parts of our hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our team but don't replace human judgment – all final hiring decisions are made by people. If you have questions about how your data is used, reach out to us.