Joblaze summary

In this role, the Senior/Staff Backend Engineer at DualEntry focuses on designing and implementing backend systems and APIs that support real-time accounting processes. Proficiency in Python, along with strong database skills and experience in deploying on AWS, are essential for success. This position is ideal for seasoned engineers with a background in complex business logic products, who thrive in a fast-paced, high-trust environment. DualEntry's team is characterized by a culture of initiative and high expectations, fostering significant growth opportunities.

Joblaze insights

Listed 17 days ago — first seen on Joblaze October 29, 2026. Last confirmed on DualEntry's careers page November 14, 2026.
Starts above 28% of 287 comparable staff backend roles we track (median $200,000 across 75 companies).

Quick facts

Is the Senior/Staff Backend Engineer (London, Hybrid) role remote?: It's hybrid — DualEntry expects some on-site time in London, UK (Hybrid).
What's the salary range?: DualEntry lists £130,000–£220,000 for this role.
How much experience is required?: At least 5 years of relevant experience for this Senior/Staff Backend Engineer (London, Hybrid) role.
Where is the role based?: DualEntry is hiring for this position in London, UK (Hybrid).
What's the tech stack?: Joblaze extracted these technologies from the posting: AWS, Django, FastAPI, Flask, PostgreSQL, Python.
Does DualEntry sponsor work visas for this role?: Yes — the posting indicates visa sponsorship is available for the right candidate.
What seniority level is this role?: DualEntry targets staff-level candidates for this position.
Is this full-time or contract?: Full-time for this Senior/Staff Backend Engineer (London, Hybrid) role at DualEntry.

From the original posting

About DualEntry

DualEntry is building the OS for finance.

Where You'll Create Impact

Build!
Design backend systems and APIs (Python preferred) that run real-time, business-critical accounting logic
Ship features end to end - architecture, CI/CD, testing, monitoring, and beyond
Integrate third-party tools and external systems, proactively managing edge cases and risk

What Sets You Up for Success

Hardcore work ethic and high agency
5+ years in backend engineering (language agnostic)
Deep experience with complex business logic products
Strong database skills: PostgreSQL, SQL, ORMs, migrations, schema design
Experience deploying on AWS (or similar), with solid CI/CD and production-readiness fundamentals
Bonus: Python and a modern web framework (FastAPI, Flask, or Django)

Why You’ll Thrive Here

Significant equity ownership in one of the top AI companies in the world
Your feedback shapes the product directly
High-speed, high-trust environment with high expectations

Meet the Engineering Team

Marcin took a non-existent tax structure and built it end to end, setting the north star for how the team keeps improving it on top of it; modular and robust, always setting the bar for the rest.
Puhiza grew her team from one to full capacity, while owning our integration framework end to end; scaling it to support migrations, integrations, and bank connections. The queen of I/O on our platform.
Danylo took ownership of our bank connection engine end to end and rebuilt it from scratch.

How You Operate

Pragmatic: you like to move forward and make decisions based in reality (not theory). We don't debate if Cassandra has the most theoretical scalability - we use Postgres until it breaks
Hard working: 'You can work long, hard, or smart, but [here] you can't choose two out of three' - Jeff Bezos.
Curious: you love to learn, are highly curious about new frameworks and solutions to engineering problems
Fast-moving: you deploy daily, iterate quickly, and never wait for permission

Benefits & Compensation

Equity: £40,000 - £70,000
Base salary: £130,000 - £220,000
Private medical insurance through Freedom Elite
Mental health support (Talkspace)
Fertility support (Carrot)
Group life insurance (Allianz)
Workplace pension through Penfold (with salary sacrifice option)
Flexible PTO (28 days, including public holidays)
Home internet, co-working space & office setup support
Unlimited AI token usage
AI skills development & enablement
Visa sponsorship and relocation support for a move to NYC (after 2 years' tenure)
In-person team meetups (our last ones: Lisbon, Vienna, Warsaw, Cyprus and more!)

Standard company text repeated across DualEntry's postings is omitted here.

Senior/Staff Backend Engineer (London, Hybrid)