Senior Software Engineer, Talos
Trading Systems, Core
$250-300k
+ Bonus and stock ownership
3+ days a week in office
Empowering institutions to trade and manage digital assets
Be an early applicant
Empowering institutions to trade and manage digital assets
101-200 employees
Be an early applicant
$250-300k
+ Bonus and stock ownership
3+ days a week in office
101-200 employees
Company mission
To provide institutional-grade technology that supports the full digital asset investment lifecycle, including liquidity sourcing, price discovery, trading, settlement and portfolio management.
Role
Who you are
- 7+ years of backend engineering experience with deep proficiency in Go, C++, Java, Rust or similar systems languages
- Demonstrated ownership of large-scale distributed systems, from initial design through deployment, scaling, and long-term operations
- Strong systems-level fundamentals: concurrency primitives, memory layout, I/O models, database design, network protocols, and the performance implications of each
- Experience designing systems with stringent correctness guarantees — ordering, consistency, durability — not just ones that work under normal conditions
- Own projects end-to-end: take work from problem definition through design, implementation, and rollout, and see it through to completion without needing to be chased
- Track record of leading technical decisions: navigating ambiguity, defining architecture, making meaningful trade-offs, and bringing a team along on the reasoning
- Comfortable operating at multiple levels of abstraction, from API contract design down to diagnosing latency spikes at the socket or disk layer
Desirable
- Experience with Aeron or comparable low-latency messaging frameworks (e.g., Chronicle, LMAX Disruptor, ZeroMQ)
- Hands-on experience building geo-distributed or multi-site systems with active-active replication and regional failover
- Familiarity with FIX protocol (4.x/5.x) or other structured financial messaging formats
- Background in trading infrastructure, market data systems, or other latency-sensitive financial platforms
- Experience with sequencer design, write-ahead logging, or custom persistence engines
What the job involves
- Talos is seeking a Senior Software Engineer to join the Core team, focused on building and maintaining the foundational platform infrastructure that powers the entire Talos trading ecosystem
- This role centers on high-performance, distributed systems engineering: designing low-latency messaging infrastructure using Aeron, building and evolving the API layers (FIX, WebSocket, REST) consumed by product teams across the firm, and maintaining the sequencer and market data distribution pipelines that sit at the heart of Talos’ architecture
- You will work on deeply technical problems at the intersection of distributed systems, financial protocols, and infrastructure reliability
- This is an opportunity to go deep on platform craft — shaping the infrastructure that every team at Talos builds on, and solving problems where the margin for error is low and the design space is wide open
- Design, develop, and maintain high-performance platform services including API gateways (FIX, WebSocket, REST), and the core libraries that product teams across Talos build on
- Build and evolve Aeron-based messaging infrastructure for reliable, low-latency communication
- Tackle hard distributed systems problems end-to-end: ordering and determinism guarantees, zero-downtime deployments, active-active architectures spanning cloud regions, and crash-consistent recovery
- Work cross-functionally to ensure platform primitives meet the throughput and latency requirements of real-time trading workflows, including market data distribution at scale
- Provide product teams with reusable service infrastructure to build scalable, reliable, and cost-efficient services
Our take
So far, the increasing institutional interest in the value of crypto-assets has been stymied by a lack of scaled, efficient, and secure infrastructure that these institutions could use for trade. Talos addresses the problem of digital asset trading between institutions, helping them to securely sidestep these obstacles into a fresh market with potentially huge returns.
The company provides a range of end-to-end, highly configurable tools to populate and facilitate the institutional crypto-asset market from just one platform. Talos' approach is helping to lower the bar for wide-ranging adoption of cryptocurrency, supporting the full lifespan of digital assets trading. That said, because the company is developing an entirely new asset class market, progress is accelerated, and competition may have a chance to overtake.
Promising for Talos was the interest of prominent investors, including PayPal and Fidelity, during their Series A and B funding rounds. The funds were used to create an institutional-grade service that would help shape and spearhead this developing market. More recently, the company has formed several significant partnerships, including with BlackRock, and acquired D3X Systems, the integration of which will enable its clients to design, validate, implement, and manage highly customised portfolios.
Steph
Company Specialist at Welcome to the Jungle
Insights
62% employee growth in 12 months
Company
Funding (last 2 of 4 rounds)
Jan 2026
$45m
SERIES B
May 2022
$105m
SERIES B
Total funding: $196m
Company benefits
- Retirement plan contribution
- Bonus and stock ownership plan
- Medical, dental, vision insurance
- Unlimited Vacation + PTO Bonus: Talos provides their employees with unlimited PTO. Employees that take 15 days of vacation, with 5 days being consecutive, receive a $2000 USD bonus.
- Paid parental leave for 20 weeks
- Genuine flexible working; Typically dependent on the team, but it's encouraged for employees to discuss flexible working options with their manager
- Global offsites and team outings
- Family building & reproductive care support
- Home office stipend: Talos Employees receive a one-time stipend towards their at home office set-up.
- Wellness Credit: Talos employees are provided with a wellness credit of $50 USD accrued monthly, to go towards things like gym memberships, ski passes, massages, and work out classes
- Talos employees receive a credit of $25 USD towards their lunch, when they are in office.
- Donation matching up to $100 USD annually
- One of our core goals is simple: "Be the best place to work, seriously.” Everything we offer is built with that in mind. At Talos, benefits are designed to support your whole life—not just your role. That means comprehensive healthcare (including dental, vision, and mental health support), financial support for family planning, and up to five months of fully paid parental leave so you can plan for the future with confidence. You’ll also have the flexibility to work in a way that suits you, with a hybrid model, a generous home office setup budget, and unlimited holiday—plus a $2,000 bonus to encourage you to actually take it. On top of that, every employee receives a company card with pre-loaded budgets, including $450 per month for meals and coffees, and $600 per year in wellness credit to spend on whatever helps you feel your best. Day to day, the experience is designed to feel energising, social, and sustainable. Whether it’s fitness sessions, cycle-to-work schemes, team lunches, or regular socials and offsites, there are plenty of ways to stay active and connected. Alongside this, we prioritise financial security through pension contributions, income protection, and comprehensive insurance—so you can focus on doing great work in a genuinely supportive and inclusive environment.
- FSA & HSA benefits
Company values
- Ideas over egos: We take a collaborative and systematic approach to problem solving. Everyone’s voice is heard and appreciated, and everyone is expected to make an impact. New ideas and rigorous debate are commonplace.
- Decentralized but tight-knit: Crypto is geographically distributed – and so are we. But we’re close-knit and our doors (real-life and Zoom-life) are always open. Our teams operate with flexibility and autonomy.
- Out-of-the-box thinking: We look for entrepreneurial, non-linear thinkers who are passionate about their work and can imagine creative, ground-breaking solutions. After all, we’re seeking to reshape an industry.
Company HQ
Fitzrovia, London
Articles
Leadership
Anton Katz
(Co-Founder & CEO)Anton previously led trading technology at AQR, held senior roles at Broadway Technology, began his career at Microsoft, and holds a CS degree from MIT.
Ethan Feldman
(Co-Founder & CTO)Ethan previously spent a decade at Broadway Technology, began his career at Microsoft, and holds undergraduate and graduate CS degrees from Cornell.
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