Sigmoidal LLC – IT recruitment of senior data scientists for AI agency

Ani Gasparyan

Last updated on September 8, 2025 | 15 min read

• Sigmoidal LLC, a US-based AI consultancy, needed to quickly scale its team to support growing demand for NLP and generative AI projects.
• DevsData LLC supported this growth by recruiting 2 senior data scientists and 1 technical project manager.

Sigmoidal LLC was in the process of scaling its team to support a growing number of AI initiatives across its client portfolio. With multiple projects already underway, the company sought to strengthen its delivery team by bringing in experienced professionals on a short timeline.

To support this effort, Sigmoidal partnered with DevsData LLC to recruit:

• 2 senior data scientists with hands-on experience in machine learning model development, natural language processing, and deploying AI systems in production.
• 1 senior technical project manager capable of coordinating AI-focused development teams and overseeing delivery for enterprise clients.

Given the pace of ongoing engagements, it was critical that new hires could integrate quickly and begin contributing immediately. The roles required not only strong technical backgrounds but also the ability to operate effectively in dynamic, client-facing environments. To address this, DevsData LLC’s vetting process included a structured interview to assess soft skills such as communication, problem-solving, and adaptability, ensuring candidates could collaborate confidently with enterprise clients.

Client overview

Sigmoidal LLC is a US-based AI consulting firm that helps enterprises integrate machine learning and generative AI into their operations. With offices in New York and Warsaw, the company serves clients across finance, healthcare, logistics, and eCommerce.

Its globally integrated team of data science consultants, each with extensive industry experience, supports organizations in identifying high-impact AI strategies and guiding them from proof of concept to full-scale implementation. Sigmoidal’s POC-first approach allows clients to validate ideas early, minimize risk, and accelerate time to value. By combining global insights with local market understanding, the company develops adaptable AI solutions tailored to evolving business needs.

Challenge

The recruitment project presented several key challenges due to the complexity and urgency of the roles involved.

First, the search was limited to senior-level professionals with hands-on experience in building and deploying machine learning solutions, particularly in NLP and generative AI. These profiles are in high demand and particularly rare in the CEE region, where employers frequently cite talent shortages for advanced AI roles. The technical stack included Python, PyTorch, TensorFlow, Hugging Face Transformers, and MLOps tools such as MLflow and Kubernetes, which further narrowed the pool of suitable candidates. DevsData LLC’s in-house technical team, composed of senior engineers with direct experience in these frameworks, enabled a deeper level of vetting than generalist recruiters could provide, ensuring only truly qualified candidates advanced in the process.

Second, the roles required more than just technical ability. Candidates needed to be able to work autonomously in a fast-paced consulting environment, interact confidently with enterprise clients, and align with Sigmoidal’s agile, delivery-focused culture.

An added layer of complexity was the evolving nature of one of the positions. The responsibilities and scope of the project manager’s role were not fully defined at the start. Unlike a traditional staffing agency, DevsData LLC acted as an integrated partner, working closely with Sigmoidal to clarify requirements and refine the candidate profile during the search. This collaborative flexibility proved essential, allowing the focus to shift toward candidates with strong backgrounds in AI product delivery and cross-functional coordination.

Finally, the project had to be completed under tight time constraints to avoid disruption to ongoing projects, making speed a critical factor in parallel with candidate quality. This required rapid sourcing, immediate feedback loops, and streamlined communication with all stakeholders.

The constraints of the project included:

• A highly competitive market for qualified AI talent
• A limited candidate pool combining deep technical expertise with excellent communication and stakeholder management skills

Beyond the technical complexity, the business stakes were high. Sigmoidal had multiple client projects in active delivery, and even a one-month delay in filling these roles could have risked contract penalties, delayed product launches, and damaged client confidence. In a competitive AI consulting market, such setbacks translate directly into revenue loss and reputational risk. This made speed not just a preference, but a business necessity.

DevsData LLC’s approach

“DevsData LLC applied a structured, hands-on approach tailored to the AI consulting space. Their combination of rigorous technical screening and strong grasp of our industry’s pace, client expectations, and delivery requirements made them a trusted partner in meeting our urgent hiring needs.”

Marius Kierski
Managing Partner | Sigmoidal LLC

Our process was designed to reduce time-to-hire while maintaining the highest bar for talent quality.

Phase 1: Discovery & profile calibration

We began by conducting a series of discovery calls with Sigmoidal’s leadership to:

• Understand the business goals driving the hires
• Define technical and soft skill requirements for each role
• Clarify team structure, reporting lines, and project context
• Align on location preferences and compensation expectations

Based on this, we developed 3 tailored candidate personas:

1. Senior Data Scientist with experience in LLMs, NLP, and rapid prototyping
2. Senior Data Scientist with production-level deployment experience and strong MLOps knowledge
3. Senior Technical Project Manager with a track record in AI product delivery and cross-functional coordination

The upfront calibration prevented mismatched expectations and ensured every candidate was aligned with Sigmoidal’s technical needs, culture, and business goals, saving the client significant interview time.

Phase 2: Sourcing & initial screening

We tapped into our proprietary database of over 65000 vetted engineers and data professionals, as well as curated AI-focused communities and our extended referral network.

Candidates were pre-screened through a thorough review of their CVs and LinkedIn profiles, followed by checks on their availability and interest in the role. We also verified alignment on location and compensation expectations to ensure a strong match before moving forward.

We focused on candidates who had delivered AI solutions in real-world settings, especially those with hands-on experience in NLP or generative AI, who could manage production systems and communicate clearly with clients.

By targeting only candidates who matched both the technical requirements and compensation structure, we reduced late-stage dropouts and kept the shortlist focused on highly qualified, motivated professionals.

Phase 3: Technical evaluation

Selected candidates underwent rigorous technical assessments designed in collaboration with Sigmoidal’s team. These included:

For all roles, we also evaluated communication skills, cultural fit, and adaptability, which are important for Sigmoidal’s dynamic, client-facing work. Rigorous assessments filtered out candidates who looked strong on paper but lacked depth in practice, leaving only those ready to operate at a senior level and contribute to client projects immediately.

Phase 4: Candidate presentation & interview coordination

DevsData LLC introduced a group of carefully chosen candidates who matched both the technical requirements and the working style Sigmoidal was looking for. For each person, we provided a clear summary outlining their strengths, any potential concerns, results from technical assessments, and notes from our interviews.

Beyond just sharing resumes, we stayed closely involved throughout the interview process. We scheduled meetings, helped candidates prepare by sharing context about the company and role, and held follow-up conversations with both sides after each round to gather feedback and adjust next steps. This helped keep the process smooth, transparent, and focused on finding the best possible match.

Proactive coordination eliminated unnecessary delays, kept momentum high, and allowed Sigmoidal’s team to concentrate only on finalists who were both technically excellent and culturally aligned.

Phase 5: Offer & onboarding support

After Sigmoidal reviewed the shortlisted candidates and gave final approval, we:

• Facilitated negotiations to close offers quickly
• Helped align on contract terms and start dates
• Provided onboarding checklists and first-week support to smooth the transition

Throughout the engagement, we maintained daily communication with Sigmoidal’s CTO and Talent Lead, refining the approach based on real-time feedback. This close collaboration helped avoid delays, reduce mismatches, and keep the process moving smoothly despite the tight timeline.

Results

The recruitment effort, led by DevsData LLC, exceeded expectations in both speed and quality.

“Within 2 months, 3 high-impact roles were successfully filled: 2 senior data scientists and 1 senior technical project manager. This fast turnaround translated into meaningful cost savings, avoiding the extended expenses that often come with a traditional, months-long hiring cycle. ”

Every candidate presented to Sigmoidal was carefully vetted for both technical depth and cultural fit. We maintained open communication with candidates throughout the process, setting clear expectations around role scope, team dynamics, and project demands. As a result, the final selections accepted their offers promptly, with no dropouts or delays during negotiations.

Feedback from Sigmoidal’s leadership was highly positive. They praised the clarity of the process, the quality of the candidate pool, and how well the final hires aligned with their evolving project demands.

Business impact

The two newly hired senior data scientists joined active projects right away, taking on important tasks in natural language processing and large language models. One, for example, improved a client’s sentiment analysis tool so feedback could be sorted more accurately and used to guide product decisions. Together, they helped keep key projects moving forward and supported the company in meeting demanding deadlines.

At the same time, the senior project manager introduced more structure to the way work was organized. With better sprint planning, clearer communication, and closer coordination between teams, project delivery became faster and more consistent. Team members had a clearer view of their responsibilities, which made collaboration smoother and schedules more reliable.

Because these roles were filled quickly, Sigmoidal was able to keep ongoing projects on track and avoid delays. This not only gave clients greater confidence but also improved the company’s internal operations. With a stronger team in place, Sigmoidal was better prepared to handle new AI projects and compete for larger contracts.

Summary of results and impact

Looking to scale your AI or engineering team with top-tier talent?

DevsData LLC specializes in sourcing senior-level developers, data scientists, and technical leaders who deliver results from day one. Whether you’re building AI products, expanding delivery capacity, or accelerating time to market, we’ll help you hire the right people quickly and reliably.

For inquiries, reach out to us at general@devsdata.com or visit www.devsdata.com to learn more.

Let’s build something exceptional together.

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Ani Gasparyan Senior copywriter and marketer

Ani is a marketing enthusiast and content writer. With 6+ years of expertise in marketing, she succeeded in developing engaging marketing collaterals, including blog articles, social media content, and other promotional materials. With a keen eye for detail and a knack for storytelling, she thrives in crafting compelling content that resonates with the target audience.

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