Accounting & Operations Coordinator - US (m/f/d)

FLEXOPTIX GmbH; Burlingame (CA); On-site; USD 60,000 - 90,000; Full time

Benefits offered by this job

Health coverage

401(k) plan

Paid time off

Annual company events

Global collaboration

Job summary

FLEXOPTIX Inc. in Burlingame, California, is seeking a hands-on Administrative/Accounting Associate to support daily accounting, payroll, HR documentation, and office operations for our US branch. You will handle AP/AR, invoicing, tax compliance with Avalara, vendor relations, and onboarding.

We value detail, organization, and a willingness to learn as you grow with our growing US team. This in-person role offers exposure to multi-state tax obligations, cross-functional collaboration, and

Qualifications

• 1–2 years of experience in accounting, bookkeeping, business operations, office administration, HR administration, or related area.
• Basic understanding of accounts payable, accounts receivable, bookkeeping, or financial recordkeeping.
• Strong organizational skills and attention to detail.
• Bachelor’s degree or equivalent practical experience.

Responsibilities

• Support day-to-day accounting activities including AP, AR, invoicing, vendor bills, and payments.
• Monitor state taxes across all 50 states using Avalara and nexus monitoring.
• Reconcile bank accounts and vendor balances; assist with unclear transactions.
• Follow up on customer payments and assist with billing, payment, and vendor questions.
• Coordinate with external accountants, tax advisors, banks, payroll and benefits providers, vendors, and partners.
• Support onboarding, payroll and benefits administration, recruiting coordination, and HR documentation.
• Assist with day-to-day US office operations, including vendor administration and recordkeeping.
• Support customer and vendor onboarding requirements such as W-9s and banking information.

Skills

Organizational skills

Attention to detail

English communication

Multitasking

Independent work

Willingness to learn

Education

Bachelor's degree or equivalent

Tools

Microsoft Excel

ERP systems

Accounting software

Avalara

Payroll systems

Job description

For over 15 years, Flexoptix has been a successful provider of transceiver solutions out of Germany. We operate in a growing niche market that we have successfully disrupted and shaped through our unconventional approach.

As part of our continued growth, we have established Flexoptix Inc., our US branch dedicated to expanding and supporting our presence in the United States (Burlingame, California). While Flexoptix has its roots and headquarters in Germany, this position is specifically for our US branch and will support the day-to-day accounting, operations, and people administration of our growing US organization.

You will play an important role in building the operational foundation of FLEXOPTIX Inc. This is a hands-on and varied position for someone who enjoys keeping things organized, solving problems, improving processes, and taking ownership across different areas of the business.

You do not need to be an expert in every part of the role from day one. We are looking for someone with a solid foundation, strong attention to detail, and the willingness to learn and grow with us.

Please note: This position is with Flexoptix Inc., a subsidiary of Flexoptix GmbH. Employment and hiring will be through Flexoptix Inc. in Burlingame, California, and all applicable local laws and regulations will apply.

That's The Job

• Support day-to-day accounting activities, including accounts payable, accounts receivable, customer invoicing, vendor bills, and payment processing
• Monitor sales tax, gross receipts tax, and other state tax obligations across all 50 states through Avalara, including nexus monitoring.
• Reconcile bank accounts, customer and vendor balances, and assist with resolving outstanding or unclear transactions
• Follow up on customer payments and help resolve billing, payment, and vendor-related questions
• Maintain accurate financial records and supporting documentation; assist with month-end and year-end accounting activities Coordinate with external accountants, tax advisors, banks, payroll and benefits providers, vendors, and other business partners
• Support employee onboarding, payroll and benefits administration, recruiting coordination, and general HR documentation
• Assist with day-to-day US office and business operations, including vendor administration and internal recordkeeping
• Support customer and vendor onboarding requirements such as W-9s, banking information, portals, and other business documentation

That's You

• 1–2 years of experience in accounting, bookkeeping, business operations, office administration, HR administration, or a related area
• Basic understanding of accounts payable, accounts receivable, bookkeeping, or financial recordkeeping
• Strong organizational skills and attention to detail
• Comfortable working with Microsoft Excel and learning new accounting, ERP, and business systems
• Able to manage multiple priorities and follow through on tasks independently
• Strong English communication skills and confidence working with customers, vendors, employees, and external partners
• Bachelor’s degree, relevant professional training, or equivalent practical experience
• Willingness to work in person in Burlingame, California
• Curious, hands-on, and willing to learn areas of the role where you may not already have experience

Preferred Skills

• Experience with bookkeeping, AP/AR, bank reconciliations, invoicing, or payment processing
• Experience with sales tax, payroll, benefits, employee onboarding, or HR administration
• Previous experience at a B2B technology startup
• Familiarity with US or California business administration is a plus

That's What We Offer

• Comprehensive Health Coverage: We offer medical, dental, and vision insurance to help you stay healthy and supported
• Plan for Your Future: Build long-term financial security with our 401(k) retirement plan, including employer matching
• Paid Time to Recharge: Enjoy a generous package of paid time off, company holidays, and sick leave, giving you the flexibility to rest, recharge, and take care of what matters most
• International Collaboration: Be part of a truly global team with opportunities to travel internationally, including training at our headquarters in Germany and joining our annual summer party with colleagues from across the world
• Make an Impact: Work on innovative deep-tech products that shape the future of optical networking. Join a collaborative team where your ideas matter, your work has real impact, and you'll help build something exciting from the ground up

Flexoptix Inc. is an equal opportunity employer and values diversity. We are committed to providing equal employment opportunities to all applicants and employees, regardless of any characteristic protected by applicable federal, state, or local law.